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1
Hasmi, Ibnu. "Analysis of Paddy Field Conversion Using Geographic Information System (GIS) in Labuhanbatu Utara Regency, Indonesia." Journal of Environmental and Development Studies 4, no. 01 (2023): 122–31. http://dx.doi.org/10.32734/jeds.v4i01.9209.
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The number of paddy production in Labuhanbatu Utara Regency, North Sumatera Province, Indonesia, continues to decline from year to year, partly due to the reduction in the area of paddy fields. This was caused by land conversion from paddy fields to non-paddy fields. This research aims to analyze the pattern of changes in the process of paddy fields to non-paddy fields in Labuhanbatu Utara Regency and its suitability on the regional spatial plan between 2017 and 2021. The research uses a descriptive qualitative method. The data was processed and analyzed using an overlapping method on biophysical data, existing conditions, and other thematic data, using Geographic Information System. The results showed that there had been a reduction in the area from paddy fields to non-paddy fields of 2,992.88 hectares from 2017-2021. It is dominated by conversion from paddy fields to oil palm areas of 2,795.58 hectares. The conversion suitability of paddy fields to non-paddy fields in 2017-2021 against Labuhanbatu Utara regional spatial plan is 21.92 percent, while 78.08 percent is not. To maintain food security in Labuhanbatu Utara Regency, the government should tighten supervision of the implementation of the regional spatial plan as well as increase the allocation of paddy fields.
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Shim, S., B. Kim, Y. Hosoi, and T. Masuda. "Dissolved organic matter from agricultural fields in the irrigation period." Water Science and Technology 52, no. 12 (2005): 233–41. http://dx.doi.org/10.2166/wst.2005.0470.
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The aim of this study was to quantify and characterize the dissolved organic carbon (DOC) of paddy fields and crop fields in Tottori, Japan. Dissolved organic carbon (DOC) and ultraviolet (UV) absorbance was measured for the filtrated water of each samples. DOC concentration and SUVA (specific UV absorbance) of biodegradation analysis samples were determined around 50 days after the incubation. In the Fukui paddy fields, DOC concentration varied seasonally from 1.1 to 10.1mg.Cl−1, showing higher concentration in heavy runoff of non-agriculture period in April. However, DOC concentration variation did not always correspond to rainfall. The Obadake paddy fields also showed a similar pattern with Fukui paddy fields. The daily DOC discharge per area in Fukui (up), Fukui (down), Obadake (south), Obadake (north) paddy fields influent from paddy fields were 0.02, 0.0161, 0.0135 and 0.0027kg.a−1.day−1, respectively. These differences resulted from differences in agricultural types and customs of farmers according to paddy fields and fields. Also, SUVA (an indirect means to evaluate humic substances (hydrophobic fraction)) of the studied influent waters from paddy fields were generally lower than the influent waters from crop fields. The non-biodegradable DOC accounted for 50.2–98%, 46.8–85.5% of the total DOC in the paddy fields and crop fields.
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Hackett, Richard, and Latha Hackett. "Pyoderma and paddy fields." Psychiatric Bulletin 17, no. 12 (1993): 752–54. http://dx.doi.org/10.1192/pb.17.12.752.
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Erwin, L. Subandi, Widiatmaka, and Ardiansyah Muhammad. "Use of WLC (Weighted Linear Combination) to Determine Land Priorities for Development of Paddy Fields in Gorontalo Regency, Indonesia." International Journal of Engineering and Management Research 9, no. 3 (2019): 58–63. https://doi.org/10.31033/ijemr.9.3.8.
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Gorontalo Regency has the largest paddy field area in Gorontalo province. The increase in population and the high demand for land for the construction of residential areas, trade areas and services, and the construction of accessibility will put great pressure on paddy fields. Uncontrolled conversion of paddy fields causes a decrease in paddy fields. Paddy fields as a rice-producing container should be maintained and protected so that the paddy needs in Gorontalo Regency are still fulfilled. Optimization of paddy fields needs to be done by the Gorontalo Regency government as an effort to increase the area of paddy fields. This study aims to determine priority lands for the development of paddy fields in Gorontalo Regency. Determination of priority land for growing wetland uses using the Weighted Linear Combination (WLC) method based on geographic information systems (GIS). The parameters used consist of driving factors and inhibiting factors. Types of land use that have land rent are forests, shrubs and moor. The criteria that influence the development of paddy field use are the distance from the paddy fields, the distance from the bush, the distance from the moor, the distance from the river and the distance from the small road. Land that has a high priority for the development of paddy land use is 6,656 ha (3.01%), medium priority land is 4,721 ha (2.16%), low priority land is 4,671 ha (2.14%) and very low priority land for development in paddy field use is 202,155 ha (92.68%).
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Supriyadi, Supriyadi, Melja Karni Pratiwi, Slamet Minardi, and Nanda Lintang Prastiyaningsih. "Carbon Organic Content under Organic and Conventional Paddy Field and its Effect on Biological Activities (A Case Study in Pati Regency, Indonesia)." Caraka Tani: Journal of Sustainable Agriculture 35, no. 1 (2020): 108. http://dx.doi.org/10.20961/carakatani.v35i1.34630.
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The low organic matter content of paddy soils impacts the declining quality of land. Without the efforts to enrich the soil organic matter (SOM) content, the productivity of paddy fields will decrease or the need for inorganic fertilizers will increase to reach the level of yield. The present research aims to determine the effect of differences in organic and conventional paddy fields management practices on soil organic carbon (SOC) content and biological activities. The research was conducted from July to September 2018 on organic and conventional paddy fields in Dukuhseti Sub-district, Pati Regency, Central Java, Indonesia. Sampling points were taken from six organic samples in the organic paddy fields while the other six samples were taken from conventional paddy fields. The variables observed in this research were organic C, pH, total N soil, total bacterial colonies, soil respiration and microbial biomass C. The results show that the organic C content in the organic paddy field (2.4%) was higher than that of the conventional paddy field (1.8%). The C content of organic paddy fields increased by 0.6%. The differences of the total bacterial colonies, soil respiration and microbial biomass C between organic paddy fields and conventional paddy fields were 11.5 CFU g<sup>-1</sup>, 7.42 mg CO<sub>2</sub> week<sup>-1</sup> and 0.51 µg g<sup>-1</sup>, respectively, because the use of organic farming systems could improve the biological nature of soils and caused biological activity in organic paddy fields to have the highest value compared to conventional paddy fields.
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Setiadi, Hafid, Muhammad Dimyati, Nurrokhmah Rizqihandari, Ratri Candra Restuti, Satria Indratmoko, and Tuty Handayani. "PADDY FIELD CONVERSION IN INDONESIA IN A CONTEMPORARY GEOGRAPHIC PERSPECTIVE: A CONCEPTUAL OVERVIEW OF HUMAN-NATURE DIALECTICS." JURNAL GEOGRAFI 13, no. 2 (2021): 195. http://dx.doi.org/10.24114/jg.v13i2.21027.
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Experts from various perspectives have widely reviewed the patterns, processes, reasons, and impacts of paddy field conversion. However, most of these reviews tend to understand paddy fields from the physical-material dimension. By using the perspective of contemporary geography, this paper provides a critical conceptual overview of the conversion of paddy fields through the elaboration of human-nature dialectic as a central theme in the discipline of geography. The dialectic also contains identity, spatial awareness, and spatial-symbolic order issues that affect the existence of farmers and their paddy fields. This critical review results in the argument that the relationship between farmers and paddy fields represents a spatial-symbolic order that contains values, enthusiasm, identity, and living traditions. The identity and existence of farmers are part of the existence of paddy fields. Paddy fields have become part of the minds and consciousness of the farmers. The conversion of paddy fields will reduce the eco-cultural relations in this order and replace it with a capitalistic system.Keywords: contemporary geography, human-nature dialectic, paddy field conversion, spatial-symbolic order, sustainable agriculture
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Tsuchiya, Ryota, Tasuku Kato, Jaehak Jeong, and Jeffrey Arnold. "Development of SWAT-Paddy for Simulating Lowland Paddy Fields." Sustainability 10, no. 9 (2018): 3246. http://dx.doi.org/10.3390/su10093246.
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The recent increase in global consumption of rice has led to increased demand for sustainable water management in paddy cultivation. In this study, we propose an enhanced paddy simulation module to be introduced to Soil and Water Assessment Tool (SWAT) to evaluate the sustainability of paddy cultivation. The enhancements added to SWAT include: (1) modification of water balance calculation for impounded fields, (2) addition of an irrigation management option for paddy fields that are characterized by flood irrigation with target water depth, and (3) addition of a puddling operation that influences the water quality and infiltration rate of the top soil layer. In a case study, the enhanced model, entitled SWAT-Paddy, was applied to an agricultural watershed in Japan. The results showed that the SWAT-Paddy successfully represented paddy cultivation, water management, and discharge processes. Simulated daily discharge rates with SWAT-Paddy (R2 = 0.8) were superior to the SWAT result (R2 = 0.002). SWAT-Paddy allows the simulation of paddy management processes realistically, and thus can enhance model accuracy in paddy-dominant agricultural watersheds.
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Keovongsa, Iep, Atiqotun Fitriyah, Fumi Okura, et al. "Analysis of Paddy Field Changes (1989–2021) Using Landsat Images and Flooding-Assisted MLC in an Urbanizing Tropical Watershed, Vientiane, Lao PDR." Sustainability 16, no. 22 (2024): 9776. http://dx.doi.org/10.3390/su16229776.
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Paddy fields are essential for food security and sustaining global dietary needs, yet urban expansion often encroaches on agricultural lands. Analyzing paddy fields and land use/land cover changes over time using satellite images provides critical insights for sustainable food production and balanced urban growth. However, mapping the paddy fields in tropical monsoon areas presents challenges due to persistent weather interference, monsoon-submerged fields, and a lack of training data. To address these challenges, this study proposed a flooding-assisted maximum likelihood classification (F-MLC) method. This approach utilizes accurate training datasets from intersecting flooded paddy field maps from the rainy and dry seasons, combined with the Automated Water Extraction Index (AWEI) to distinguish natural water bodies. The F-MLC method offers a robust solution for accurately mapping paddy fields and land use changes in challenging tropical monsoon climates. The classified images for 1989, 2000, 2013, and 2021 were produced and categorized into the following five major classes: urban areas, vegetation, paddy fields, water bodies, and other lands. The paddy field class derived for each year was validated using samples from various sources, contributing to the overall accuracies ranging from 83.6% to 90.4%, with a Kappa coefficient of between 0.80 and 0.88. The study highlights a significant decrease in paddy fields, while urban areas rapidly increased, replacing 23% of paddy fields between 1989 and 2021 in the watershed. This study demonstrates the potential of the F-MLC method for analyzing paddy fields and other land use changes over time in the tropical watershed. These findings underscore the urgent need for robust policy measures to protect paddy fields by clearly defining urban expansion boundaries, prioritizing paddy field preservation, and integrating these green spaces into urban development plans. Such measures are vital for ensuring a sustainable local food supply, promoting balanced urban growth, and maintaining ecological balance within the watershed.
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First, Alamin Yang, Baba Barus, and Boedi Tjahjono. "Ancaman Konversi Lahan Sawah Terhadap Kecukupan Beras di Kabupaten Musi Rawas." Journal of Regional and Rural Development Planning 7, no. 1 (2023): 42–57. http://dx.doi.org/10.29244/jp2wd.2023.7.1.42-57.
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Rice production in 2019 decreased by 2.63 million tons or 7.75 percent compared to 2018, exacerbated by the increasingly massive conversion of agricultural land. One of the areas threatened by land conversion is Musi Rawas Regency in South Sumatra Province. This study aims to analyze changes in land use in 2000, 2010, 2020 and paddy fields for rice sufficiency in Musi Rawas Regency. The method used is Cellular Automata-Markov (CA-Markov), analysis of the surplus-deficit food balance, and paddy fields overlaying the spatial plan. Based on the results of the analysis, there was a change in land use in Musi Rawas Regency between 2000 to 2020, an increase in the area of plantation land by 128,867.74 ha. This increase is largely the result of conversion of paddy fields. The results of the calculation of the predicted demand for rice in 2030 show that in total there will be a rice deficit of -16,511 tons. It is predicted that there will be a rice deficit due to the decrease in the area of paddy fields which is affected by changes in land use from paddy fields to non-paddy fields. The suitability of existing paddy fields with the 2010 to 2030 RTRW shows an area of 7,598.73 ha of actual paddy fields in 2020 is suitable, 3,057.27 ha is not suitable. The incompatibility of paddy fields in 2020 with the RTRW can be input into the revision of the RTRW that will be carried out by the Musi Rawas Regency government, especially on the spatial pattern of paddy fields.
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Inoue, Shimpei, Akihiko Ito, and Chinatsu Yonezawa. "Mapping Paddy Fields in Japan by Using a Sentinel-1 SAR Time Series Supplemented by Sentinel-2 Images on Google Earth Engine." Remote Sensing 12, no. 10 (2020): 1622. http://dx.doi.org/10.3390/rs12101622.
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Paddy fields play very important environmental roles in food security, water resource management, biodiversity conservation, and climate change. Therefore, reliable broad-scale paddy field maps are essential for understanding these issues related to rice and paddy fields. Here, we propose a novel paddy field mapping method that uses Sentinel-1 synthetic aperture radar (SAR) time series that are robust for cloud cover, supplemented by Sentinel-2 optical images that are more reliable than SAR data for extracting irrigated paddy fields. Paddy fields were provisionally specified by using the Sentinel-1 SAR data and a conventional decision tree method. Then, an additional mask using water and vegetation indexes based on Sentinel-2 optical images was overlaid to remove non-paddy field areas. We used the proposed method to develop a paddy field map for Japan in 2018 with a 30 m spatial resolution. The producer’s accuracy of this map (92.4%) for non-paddy reference agricultural fields was much higher than that of a map developed by the conventional method (57.0%) using only Sentinel-1 data. Our proposed method also reproduced paddy field areas at the prefecture scale better than existing paddy field maps developed by a remote sensing approach.
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Shiraishi, Hideo, Xing Jianglong, Futo Akiyama, et al. "Cultural Landscape of Lombok Island, Indonesia: Spatial structure of terraced paddy fields in Desa Bayan." IOP Conference Series: Earth and Environmental Science 1361, no. 1 (2024): 012025. http://dx.doi.org/10.1088/1755-1315/1361/1/012025.
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Abstract This study aimed to clarify spatial structure of terraced paddy fields in Desa Bayan located in Lombok Island, Indonesia as an example of cultural landscape of the island. The survey extent was defined by collecting up all waterways from a water source in a sacred forest (Hutan Adat) which supply water to traditional paddy fields called Sawah Adat. Location of other irrigation facilities such as intakes and water gates, as well as land ownership within a specific area including paddies owned by a traditional chief (Kepala Adat) were collected to understand its spatial characteristics. The findings were summarized as below: 1) Waterways were split into several channels to formulate clusters of paddy fields as a unit of water supply area, 2) size of paddy fields was not consistent but varies based on geographical condition, 3) a set of paddy fields were owned by individual residents not only from Desa Bayan but also from other villages, 4) each set of paddy fields contained a hut which was used not only for resting but also for periodical ceremonies, 5) there was a set of paddy fields owned by a village chief (Kepala Desa) from generation to generation which receives water from other paddy fields preferentially, 6) basic structure of the landscape is defined by waterways but the major factors of cultural landscape could be summarized as continuous paddy fields, spaced-out huts, trees along waterways and forests surrounding the entire area.
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Ellandini, H., H. Setiadi, and N. Rizqihandari. "The relation of the economic value of rice field agricultural land with the location characteristics in Cugenang District, Cianjur Regency." IOP Conference Series: Earth and Environmental Science 1190, no. 1 (2023): 012020. http://dx.doi.org/10.1088/1755-1315/1190/1/012020.
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Abstract The population growth causes the demand for land to increase. The availability of land is limited thus that there is competition for land use between agricultural and non-agricultural land. This happened in Cugenang District, where the area of paddy fields continued to decrease thus it is necessary to study the economic evaluation produced by paddy fields. This study aims to analyse the variation of the economic value of paddy fields and to analyse the relationship between the economic values of paddy fields and the characteristics of the location in Cugenang District. The method used is a quantitative method with statistical analysis of variance (ANOVA) and Pearson correlation. The analysis used is spatial and descriptive analysis. The results showed that the economic value of paddy fields is different at different elevation areas. The economic value of paddy fields at an elevation of < 600 m has a higher value, which is Rp 2,982/m2. Location characteristics that have a relationship with the economic value of paddy fields are the distance from the city centre and the distance from the market. The distance from the market has a linear relationship, while the distance from the city centre has an inverse relationship. Overall, the physical location of paddy fields has a more significant relationship than economic location because the level of productivity in paddy fields is more influenced by physical location than economic location.
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Parameswaran*, Prajeesh, and Anil Kumar N. "An account of the ‘useful weeds’ associated with wetland paddy fields (Vayals) of wayanad, Kerala." Annals of Plant Sciences 6, no. 01 (2016): 1516. http://dx.doi.org/10.21746/aps.2017.01.006.
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This study conducted in Wayanad District of Kerala has documented the usefulness of the vascular flora associated with wetland paddy fields (Vayals). The plants were recorded from the paddy fields and paddy levees (bunds) and associated habitats. 65 farmer participants of the study, through a total of 945 sightings, have identified 95 useful plants species each from Paddy Fields/Levees (dominated by the members of Cyperaceae, Asteraceae, Poaceae, Amaranthaceae) and Paddy Associated habitats (dominated by the members of Solanaceae, Asteraceae, Fabaceae, Moraceae). 33 species were common to these habitats. The study reveals the importance of the plant diversity associated with paddy fields, in meeting the multiple requirements of the rural and tribal people of Wayanad.
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QURROHMAN, Budy Frasetya Taufik, Abraham SURİADİKUSUMAH, Benny JOY, and Rija SUDİRJA. "Study on the potential of silica-available based on types of soil on the productivity of paddy field in West Java Province, Indonesia." EURASIAN JOURNAL OF SOIL SCIENCE (EJSS) 11, no. 3 (2022): 266–74. http://dx.doi.org/10.18393/ejss.1085264.
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The Si-available (Siap) content in the soil of paddy fields is decreasing, so it will affect decreasing the productivity of paddy fields. Soil type maps can be used to estimate the potential Siap content in paddy fields. The purpose of this study was to assess the productivity of the paddy field in West Java Province based on the Siap potential in each region using maps of soil types and paddy productivity data. This research was conducted in West Java Province. The research was carried out from February 2021 to March 2021. The research method used was the descriptive research method. This research is secondary data analysis so that no field test is carried out. The validation of the data from the analysis was based on the literature from the previous researchers. The parameters measured in this study were: the distribution of paddy fields, the percentage of soil types in each paddy field, the average productivity of paddy field on each type of soil, the distribution of paddy productivity levels, the potential for Siap to paddy productivity and map of the potential distribution of Siap in West Java Province. Secondary data obtained were then analyzed using spatial analysis and descriptive analysis. The results of the spatial analysis show that 77% of paddy fields in West Java have medium Siap potential, 17% low and 7% high. The results of the correlation analysis show that the productivity of paddy plants has a strong correlation (r = 0.99) to the Siap of paddy soil. The soil maps can be used to estimate the potential of Siap and the productivity of paddy plants. The Si application was recommended in paddy fields in the southern region of West Java Province.
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Huynh, Thien, Aisha Oyabu, Shinya Nomura, Tadao Takashima, and Nisikawa Usio. "Do Agrochemical-Free Paddy Fields Serve as Refuge Habitats for Odonata?" Ecologies 2, no. 1 (2020): 1–15. http://dx.doi.org/10.3390/ecologies2010001.
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Agrochemical-free rice farming has attracted interest for restoring paddy field biodiversity and producing safe food. Odonata are commonly used as a biodiversity indicator in these low-input farms. However, the effect of agrochemical-free rice farming on odonate diversity has rarely been assessed over the entire emergence period of these insects. We investigated whether different farming practices, such as conventional or natural (agrochemical-and fertilizer-free) cultivation, and associated water management strategies affect the emergence rates of Odonata in paddy field landscapes in central Japan. Weekly exuviae sampling in 2017 and 2019 suggested that odonate assemblages differed between conventional and natural paddy fields, with a higher number of taxa emerging from natural paddy fields. Contrary to expectations, conventional paddy fields had equivalent or higher emergence rates of all Odonata and two numerically dominant Sympetrum species. Peak emergence periods for numerically dominant taxa differed between the farming types, with the emergence of three Sympetrum species peaking in late June in conventional paddy fields and that of S. frequens peaking in early to mid-July in natural paddy fields. Our findings suggest that both conventional and natural paddy fields are important habitats for Odonata in Japan.
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Fitri, T. Y., S. Adiwibowo, and A. E. Pravitasari. "The impact of land-use changes and economic losses of paddy field conversion: a case study of Ciampea Sub-district, Bogor Regency, West Java Province." IOP Conference Series: Earth and Environmental Science 950, no. 1 (2022): 012104. http://dx.doi.org/10.1088/1755-1315/950/1/012104.
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Abstract The study aims to analyze the land-use changes from paddy fields to non-paddy fields, examine the future sustainability of the paddy fields, and analyze the impact of the paddy fields’ conversion on the socio-economic and environmental aspects. The study was carried out at Ciampea Sub-district, Bogor Regency, West Java Province. Conversion of paddy fields was analyzed through visual interpretation of Ciampea Sub-district 2016 and 2019 imageries using GIS software of ArcGIS 10.5. and later was used to measure the average annual conversion rate and predict the future sustainability of the paddy field, and to measure the impact of the land conversion using the economic valuation method (financial analysis and replacement cost approach). The results showed that, first, during the year of 2016 to 2019, the paddy fields in Ciampea Sub-district transformations were dominated by settlements. Second, the conversion rate was relatively high, by 51.45 hectares per annum. Third, the impact of reduction of paddy field area was relatively high: a potential loss of 3,098.06 tons of food crop production. Meanwhile, the cost for replacing the function of flood, erosion, and sedimentation control reached IDR 257.68 billion.
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Suliman, S., Y. Setiawan, and Syartinilia. "Assessing the paddy fields conversion using optical satellite imageries: A case study in Karawang Regency, West Java." IOP Conference Series: Earth and Environmental Science 950, no. 1 (2022): 012092. http://dx.doi.org/10.1088/1755-1315/950/1/012092.
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Abstract Paddy fields are the most crucial agricultural land-use in Indonesia that supporting national food security. Such lands have been experienced a massive change in their dynamics, specifically in rice production home, West Java. Karawang paddy fields notably become the major victim of land-use change along with rapid economic growth, development, and population pressure. This study aimed to assess paddy fields’ conversion dynamic and how land-use change contributes to this issue in Karawang. Remote sensing techniques and satellite images were used for investigation across the Karawang Regency. Three kinds of satellite image datasets of Landsat 5 TM, Landsat 8 OLI, and Sentinel 2 during the periods of 2009, 2014, and 2019 were analyzed. The results revealed that land-use change impacted paddy fields conversion significantly. Karawang regency lost 16346.77 ha or 8.54 % of its paddy fields throughout the study period. Such farmlands declined by 8639.84 ha (4.51%) and 7706.93 ha (4.02%) between 2009 -2014 and 2014 to 2019, respectively. The conversion of paddy fields to build areas, including road infrastructures, is approximately 14536.21 ha, representing 57.98% of the total paddy fields converted. It concluded that paddy fields had faced massive conversion over the last ten years driven by conversion into buildup areas due to the increased land demand, i.e., residential, commercial, and industrial activities.
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Fitrianah, Listin, and Agus Rachmad Purnama. "Sebaran Timbal pada Tanah di Areal Persawahan Kabupaten Sidoarjo." Journal of Research and Technology 5, no. 2 (2019): 106–16. http://dx.doi.org/10.55732/jrt.v5i2.307.
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The existence of this industry in Sidoarjo has the negative potential impact to the environment, namely the accumulation of heavy metals in paddy fields. The magnitude of the impact that can be caused by the presence of lead heavy metals, research is needed that is expected to provide information related to the concentration and distribution of lead on land in Sidoarjo district. The distribution will later be elaborated by mapping using Geographic Information Systems. The purpose of this research is to identify the potential distribution of lead heavy metals in soil and soil in Sidoarjo paddy fields and the potential impact of lead accumulation on the environment. Samples taken were soil in the paddy fields, with 18 location points. The method used in the identification of lead distribution in paddy fields in Sidoarjo district is survey and laboratory testing, where the pattern of lead content distribution in paddy fields is carried out using spatial analysis with the spline with barrier method Arcgis 10.1. The highest distribution of lead content in paddy fields in Wonoayu District, 0.46 ppm. The highest dominant distribution pattern of lead pollution in paddy fields is Wonoayu and Waru sub-districts.
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Adyaguhyatriko, Ida Bagus Ketut, I. Made Anom Sutrisna Wijaya, and Sumiyati Sumiyati. "Analisis Spatio-Temporal Alih Fungsi Lahan Sawah Kabupaten Tabanan." Jurnal BETA (Biosistem dan Teknik Pertanian) 12, no. 1 (2023): 128. http://dx.doi.org/10.24843/jbeta.2024.v12.i01.p14.
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Fenomena alih fungsi lahan sawah ke non sawah hampir terjadi di semua wilayah. Penduduk, pemerintah dan perusahaan swasta adalah pelaku perubahan fungsi lahan sawah ke non sawah saat ini. Kabupaten Tabanan adalah salah satu kabupaten di Provinsi Bali sekitar 28 persen dari luas lahan yang ada di Kabupaten Tabanan merupakan lahan persawahan, sehingga Kabupaten Tabanan dikenal dengan sebutan lumbung beras di Provinsi Bali. Penelitian ini dilakukan untuk menghasilkan sebaran alih fungsi lahan sawah, besaran luas perubahan alih fungsi lahan sawah dan juga tern perubahan alih fungsi lahan sawah di Kabupaten Tabanan tahun 2018-2022. Dalam pembuatan peta perubahan tutupan lahan sawah menggunakan pengolahan citra sentinel dari tahun 2018 hingga tahun 2022. Pelaksanaan penelitian ini dilakukan dalam beberapa tahapan penelitian, yaitu persiapan, pengumpulan data, pengolahan data, dan analisis data. Perubahan tutupan lahan sawah Kabupaten Tabanan tahun 2018 – 2022 memiliki perubahan tutupan lahan sawah menjadi bangunan sebanyak 1209,794 ha, tutupan lahan sawah menjadi kebun sebanyak 1380,275 ha, tutupan lahan sawah menjadi ladang sebanyak 2630,746 ha dan tutupan lahan sawah yang tetap menjadi sawah sebanyak 1687,179 ha. Perubahan tutupan lahan yang awalnya kebun menjadi sawah sebanyak 2199,893 ha dan tutupan lahan ladang menjadi sawah sebanyak 982,892 ha. ABSTRACT Tabanan Regency is known as a rice barn in the Province of Bali with a rice field area of ??28% of the total area of ??Tabanan Regency. According to data from the Badan Pusat Statistik (BPS) grain production in 2018-2022 in Tabanan Regency has decreased by 19,181 tons. One of the reasons for the decline in production is thought to be due to the conversion of paddy fields. The purpose of this study was to determine the distribution of conversion of paddy fields, the area of ??conversion of paddy fields and determine the trend of change in the function of paddy fields. The stages of the research included collecting sentinel-2A image data, cloud masking, spatial analysis, and temporal analysis of land conversion from 2018 to 2022. From the results of the spatial analysis, it was found that land use is lakes, buildings, gardens, rice fields and fields. The results of the temporal analysis of land use show that the change in the use of paddy fields into buildings is 1,209.794 ha, the use of paddy fields into gardens is 1,380.275 ha, the use of paddy fields into fields is 2,630.746 ha and the use of paddy fields that remains paddy fields are 1,687.179 ha in area. Changes in land use from gardens to paddy fields are 2,199.893 ha and from field land use to paddy fields are 982.892 ha. It can be concluded that the biggest change trend in the use of paddy fields in Tabanan Regency in 2018-2022 is the conversion of paddy fields to fields and then to farms and buildings.
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Gandhi, Prima, Nindyantoro Nindyantoro, Irham Darmawan, and Rachmat Rachmat. "Persepsi Kelompok Tani Terhadap Multifungsi Sawah Dan Strategi Keberlanjutan Kebijakan PLP2B Di Kota Bogor." AGRIEKSTENSIA 21, no. 2 (2022): 81–99. http://dx.doi.org/10.34145/agriekstensia.v21i2.2182.
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The area of rice fields in the city of Bogor continues to decline. The cause of the decline in the area of rice fields is the development of residential, industrial, and public infrastructure. The conversion of paddy fields occurred in the city of Bogor. To restrain the rate of conversion of paddy fields, the government issued a policy in the form of Bogor City Regional Regulation No. 16 of 2019 concerning the Protection of Sustainable Food Agricultural Land (Perda PLP2B). For the PLP2B Regional Regulation policy to run well, it is necessary to know the perception of the rice farmer group leader towards the multifunctionality of paddy fields as well as the policy strategy for the sustainability of paddy fields in the city of Bogor. This study uses two analytical methods: descriptive analysis of the Likert scale and analysis of Preference Ranking Organization METHODs for Enrichment Evaluation (PROMETHEE). This study indicates scale that rice farmers have a good perspective,they still feel the various benefits of the existence of paddy fields. The alternative policy strategy of the local government of Bogor City to maintain the sustainability of paddy fields is to develop human resources (farmers) and agricultural services.
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Tsania Yanuareva, Zulva, and Moh Yanuar J Purwanto. "Kajian Luasan Petak Sawah untuk Perencanaan Konsolidasi Lahan Persawahan." AGRICULTURAL ENGINEERING INNOVATION JOURNAL 1, no. 2 (2023): 113–20. http://dx.doi.org/10.55180/aei.v1i2.727.
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Land consolidation in Indonesia, one of which needs to be done on paddy fields, this is because Indonesia is a rice barn country where the majority of people consume rice and make rice a staple food. The arrangement of paddy fields can have an impact on the effectiveness and productivity of the land. The condition of small plots is a burden for the management and construction of rice field plots with optimum area. This research was conducted to analyze existing agricultural infrastructure in the village of Bojongpicung District, Cianjur Regency. The analysis was carried out by observing and calculating the shape and size of paddy fields through digitization in the ArcGIS application using the sampling method, then testing the uniformity of paddy plot sizes to plan the rearrangement of paddy fields and analyzing existing agricultural infrastructure. The results showed that there were 5,359 paddy fields with a total area of 254.63 hectares with an average paddy field size of 0.0475 hectares. The shape of the rice field plots varies and is dominated by 60% square shape. The paddy field uniformity index shows an overall 2.23%, meaning it is not uniform.
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Sakthivadivel, R. "Paddy fields in the world." Agricultural Water Management 33, no. 1 (1997): 81–83. http://dx.doi.org/10.1016/s0378-3774(96)01280-2.
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WATANABE, Iwao. "Nitrogen cycle in paddy fields." Kagaku To Seibutsu 24, no. 3 (1986): 163–70. http://dx.doi.org/10.1271/kagakutoseibutsu1962.24.163.
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Roger, Pierre. "Microbial processes in paddy fields." Bulletin of Japanese Society of Microbial Ecology 5, no. 1 (1990): 25–27. http://dx.doi.org/10.1264/microbes1986.5.25.
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Dogar, Mariam. "Djinn of the Paddy Fields." Pleiades: Literature in Context 43, no. 2 (2023): 134–38. http://dx.doi.org/10.1353/plc.2023.a912972.
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Jung, Shin Hye, Han-Pil Rhee, Ha Sun Hwang, and Chun Gyeong Yoon. "A Study on the Applicability of HSPF Paddy-RCH for Calculating the Reduction of Agricultural Non-point Pollutants." Journal of Korean Society of Environmental Engineers 42, no. 12 (2020): 593–602. http://dx.doi.org/10.4491/ksee.2020.42.12.593.
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Objectives:Non-point source pollution (NPS) reduction has been considered as the first priority in South Korea to achieve acceptable water quality. Among many NPS pollutions, agricultural NPS is one of the major NPS contributor due to its vast area. However, agricultural NPS characterization has not been successful because agricultural NPS has inconsistent water and mass balances, thus has lacking NPS reduction measures. This study assesses applicability of HSPF Paddy-RCH method to estimate agricultural NPS loads in paddy rice field.Methods:HSPF Paddy-RCH method was developed to simulate water and mass balance in paddy rice field(s). Applicability of the developed method was tested in Gyeseongcheon watershed in Nakdong River basin, South Korea. The study area was selected because there is no other major pollutant source except the paddy fields, but has simple drainage system. HSPF Paddy-RCH method was calibrated in control paddy field with conventional fertilizing condition and applied to two small scale paddy fields (89% and 76% fertilizing condition). The calibrated HSPF Paddy-RCH method was then tested in small watershed (subbasin) including small paddy fields applied earlier for applicability study of watershed scale.Results and Discussion:Calibrated HSPF Paddy-RCH method well represented observed flow rates (R2=0.825) and water-quality (BOD, T-N, T-P, relative differences [%diff]<7.52%). Water-quality parameters for the control paddy field showed slower decaying rate than river and stream. The calibrated HSPF Paddy-RCH well represented water and mass balance for the small scale paddy fields with varying fertilizing condition (R2>0.689 for flow rate, %diff<12.20% for water quality), as well as for the small scale watershed with large scale paddy fields (R2>0.693 for flow rate, %diff<19.29% for water quality) could promise.Conclusions:This applicability study results would suggest that HSPF Paddy-RCH method is a feasible tool to quantify agricultural NPS pollution and to develop reduction measured for paddy rice field.
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Li, Jun, Zhengyue Xue, Yue Li, et al. "Real-Time Measurement of Atmospheric CO2, CH4 and N2O above Rice Fields Based on Laser Heterodyne Radiometers (LHR)." Agronomy 13, no. 2 (2023): 373. http://dx.doi.org/10.3390/agronomy13020373.
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High-precision observations provide an efficient way to calculate greenhouse gas emissions from agricultural fields and their spatial and temporal distributions. Two high-resolution laser heterodyne radiometers (LHRs) were deployed in the suburb of Hefei (31.9°N 117.16°E) for the remote sensing of atmospheric CO2, CH4 and N2O above rice paddy fields. The atmospheric transmittance spectra of CO2, CH4 and N2O were measured simultaneously in real time, and the atmospheric total column abundance was retrieved from the measured data based on the optimal estimation algorithm, with errors of 0.7 ppm, 4 ppb and 2 ppb, respectively. From July to October, the abundance of CO2 in the atmospheric column that was influenced by emissions from rice fields increased by 0.7 ppm CH4 by 30 ppb, and by 4 ppb N2O. During the rice growth season, rice paddy fields play a role in carbon sequestration. CH4 and N2O emissions from paddy fields are negatively correlated. The method of baking rice paddy fields reduces CH4 emissions from rice fields, but N2O emissions from rice fields are usually subsequently increased. The measurement results showed that LHRs are highly accurate in monitoring atmospheric concentrations and have promising applications in monitoring emissions from rice paddy fields. In the observation period, rice paddy fields can sequester carbon, and CH4 and N2O emissions from rice fields are negatively correlated. The LHRs have strong application prospects for monitoring emissions from agricultural fields.
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Saputro, Budi, Dolly Priatna, Rosadi Rosadi, and Naori Miyazawa. "Spatial analysis of paddy field change in Purwakarta Regency, West Java, Indonesia." Indonesian Journal of Applied Environmental Studies 4, no. 1 (2023): 22–29. http://dx.doi.org/10.33751/injast.v4i1.6644.
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Food is a basic human need. The state must strive to meet the availability of food for people in a sustainable manner. One of the efforts is to maintain and develop paddy fields as a food source as a supplier of 95% of national rice production. The conversion of paddy fields is a reason of decreasing of food production in Purwakarta Regency, which impact on food availability and security. This research was aimed to provide a portrait of the rate of conversion of paddy fields in Purwakarta. This research is a quantitative descriptive research using spatial analysis to compare two period of times: 2013-2017 period and the 2017-2021 period. The results of spatial analysis in the 2013-2017 period showed that Purwakarta Regency experienced a reduction in paddy fields by 195.55 ha (1%) consisting of paddy fields turned into industry 117.99 ha; roads 5.72 ha; settlements of 42.30 ha and housing, trade and services of 29.55 ha. Meanwhile, in the 2013-2017 period, paddy fields turned into industry 151.72 ha, roads by 23.54 ha, settlements 196.76 ha, and housing, trade and services 29.81 ha. The results of this study reinforce that the reduction in food production in Purwakarta was caused by the conversion of paddy fields into other uses during the 2013-2017 and 2017-2021 periods.
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Antony, Dedy, Weni Wilia, and Agus Kurniawan Mastur. "KAJIAN POTENSI DAN KARAKTERISTIK TANAH BEKAS PENAMBANGAN SEBAGAI LAHAN SAWAH DI KECAMATAN PANGKALAN JAMBU KABUPATEN MERANGIN PROVINSI JAMBI." Paspalum: Jurnal Ilmiah Pertanian 12, no. 1 (2024): 120. http://dx.doi.org/10.35138/paspalum.v12i1.697.
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The phenomenon of people's gold mining or often called gold mining without permit (PETI) in Merangin Regency, Jambi Province is a serious problem because it occurs in productive paddy fields. This activity causes damage to paddy fields due to processes during mining activities. After the mining activity, the damaged paddy fields needed handling, especially for being reclaimed into paddy fields again. The research was conducted at the Baru Pangkalan Jambu Village, Pangkalan Jambu District, Merangin Regency, Jambi Province. The research took place from May to November 2022 which consisted of two stages, namely: 1) mapping the potential of ex-mining land to become rice fields, 2). Analysis of soil characteristics in paddy fields that have been reclaimed. Data were analyzed descriptively based on the criteria of soil physical and chemical properties based on PPT Bogor (1994). The results showed that the soil physical properties of paddy rice fields from reclamation of former mines had relatively low bulk density, coarse soil texture (sandy loam). The chemical properties of the soil indicate that the land has very low organic C and total nitrogen and a relatively acidic to slightly acidic soil pH. Research shows that the quality of this soil tends to increase with the duration of post-reclamation utilization.Keywords: Paddy field, land reclamation, unauthorized people's mining, land quality
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Mufriah, Dini. "Dampak Pengelolaan Sawah Secara Organik Lebih Dari Lima Tahun Terhadap C-Organik Tanah dan Ketersediaan Ammonium." JURNAL AGROPLASMA 9, no. 2 (2022): 254–61. http://dx.doi.org/10.36987/agroplasma.v9i2.3336.
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This study aims to examine the availability of soil organic C, availability of ammonium and the dynamic pattern of organic C in organically managed paddy soils for 8 to 10 years at three different lowland rice locations in Yogyakarta. The research was conducted using survey techniques and descriptive methods. The results showed that paddy fields that were given organic fertilizer for 8-10 years had higher organic C than non-organic paddy fields, namely an average of 2.10-2.70%. In organically managed paddy soils also showed a significant positive relationship between soil organic C and NH4+-dd in MS paddy soils containing clay minerals 1:1 (r= 0.71) and NK paddy soils (r= 0 .64) and PB (r= 0.77) which were dominated by clay minerals 2:1. The correlation was not significant in the non-organic managed paddy fields. Keywords ：paddy soils, organic C,NH4+-dd
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Tsuchiya, Kenta, Ernan Rustiadi, Darmawan, and Shinya Funakawa. "The Role of Terraced Paddy Fields and Its Critical Issues in Sustaining a Mountainous Tropical Monsoon Rural Community: Case Study of Malasari Village, Bogor Regency, Indonesia." Journal of Regional and Rural Development Planning 5, no. 2 (2021): 91–100. http://dx.doi.org/10.29244/jp2wd.2021.5.2.91-100.
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Terraced paddy fields play an important role not only in the food production function, but also in flooding control, water source recharge, and soil erosion and landslide prevention in mountainous area. Abandonment has been occurring in many countries due to natural condition climate, low-productive, less economic condition, depopulation, aging, and poor work efficiency. However, the terraced fields in Malasari village, Bogor Regency are relatively sustained and constantly maintained by traditional local farmers. Therefore, this study aims to seek keys to how to maintain of the terraced paddy fields by local farmers in Malasari village. The survey was conducted from October 2019 to January 2020 on Malasari village (6°40’S and 106°31’E) by using primary and secondary data with a sample of 28 households. Questionnaire survey was conducted to elicit primary data on farmer’s basic information. Verification of land cover in Malasari village was carried out by visual interpretation land cover in images obtained from drone image in 2019. The terraced paddy fields have been maintained by local farmers contentiously. Two factors are discovered maintained the terraced paddy fields, namely: (1) the local wisdom technique is an act that has direct influences on the physical structure of terraced paddy fields for maintaining, especially land management which is plowing and making levee are playing an important role, and (2) social capital is an act that has indirect influences on the terraced paddy fields. These factors interact with each other to maintain the terraced paddy fields.
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Niswati, Ainin, Dermiyati, and Mas Achmad Syamsul Arif. "Perubahan Populasi Protozoa dan Alga Dominan pada Air Genangan Tanah Padi Sawah yang Diberi Bokashi Berkelanjutan." Journal of Tropical Soils 13, no. 3 (2008): 225–31. http://dx.doi.org/10.5400/jts.2008.v13i3.225-231.
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Protozoa and alga play important roles in biogeochemical nutrient cycles in freshwater environment, especially in the paddy fields. The changes from the conventional technologies to organic technologies will change the communities structures of organisms lived in the paddy fields environment. The fields experiment was conducted to study the population dynamic of protozoa and algae dominant inhabited in the floodwater of the paddy fields subjected by continues ‘bokashi’ application. The results showed that protozoa and algae inhabited in the paddy fields in present study were dominated by Euglena, Pleodorina, Volvox, and Diatom. The continued application of bokashi for 4 years significantly increased the total population of protozoa and algae, however, the significantly effect was obtained in the population of Volvox only. The population of protozoa and algae were affected by the time of flooding of paddy fields where it increases exponentially at the 20 and 30 days after flooding and stable after that, ecxept for Euglena where it increases little by little with time of flooding.
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Wei, Guangfei, Huifang Chen, En Lin, et al. "Identification of Water Layer Presence in Paddy Fields Using UAV-Based Visible and Thermal Infrared Imagery." Agronomy 13, no. 7 (2023): 1932. http://dx.doi.org/10.3390/agronomy13071932.
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The accurate identification of the water layer condition of paddy fields is a prerequisite for precise water management of paddy fields, which is important for the water-saving irrigation of rice. Until now, the study of unmanned aerial vehicle (UAV) remote sensing data to monitor the moisture condition of field crops has mostly focused on dry crops, and research on the water status of paddy fields has been relatively limited. In this study, visible and thermal infrared images of paddy fields at key growth stages were acquired using a UAV remote sensing platform, and three model input variables were constructed by extracting the color features and temperature features of each field, while K-nearest neighbor (KNN), support vector machine (SVM), random forest (RF), and logistic regression (LR) analysis methods were applied to establish a model for identifying the water layer presence in paddy fields. The results showed that KNN, SVM, and RF performed well in recognizing the presence of water layers in paddy fields; KNN had the best recognition accuracy (89.29%) via algorithm comparison and parameter preference. In terms of model input variables, using multisource remote sensing data led to better results than using thermal or visible images alone, and thermal data was more effective than visible data for identifying the water layer status of rice fields. This study provides a new paradigm for monitoring the water status of rice fields, which will be key to the precision irrigation of paddy fields in large regions in the future.
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Lee, Chang-Seok, Bong-Soon Lim, and Ji-Eun Seok. "Carbon Absorption Potential of Abandoned Rice Paddy Fields in Korea." Sustainability 17, no. 5 (2025): 2054. https://doi.org/10.3390/su17052054.
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Over time, the vegetation of abandoned rice paddy fields is succeeded by communities of willow (Salix pierotii Miq.). This study was carried out to confirm the potential for future carbon farming by evaluating the carbon absorption capacity of willow communities restored passively in abandoned rice paddy fields. The net primary productivity (NPP) of willow communities established in abandoned rice paddy fields in three areas of central Korea (Cheongju, Andong, and Buyeo) was determined. The NPP was obtained by combining the diameter growth of willow individuals and the density of willow stands, yielding 24.36, 19.74, and 38.69 tons·ha−1·yr−1, respectively, and the average NPP of the three sites was 27.62 tons·ha−1·yr−1. The carbon-based NPP calculated from the average NPP at the three sites was 13.81 tons·C·ha−1·yr−1, and the amount of heterotrophic respiration, which is the respiration of microorganisms and animals in the soil, measured in abandoned rice paddy fields in Cheongju was 5.25 tons·C·ha−1·yr−1. As a result, the net ecosystem production (NEP) of the willow communities established in the abandoned rice paddy fields was calculated as 8.56 tons·C·ha−1·yr−1. By substituting this NEP value into the area of abandoned rice paddy fields so far, the carbon dioxide absorption capacity of abandoned rice paddy fields was estimated to exceed 19 million·tons·yr−1. This amount is high enough to account for 77% of the total forecasted carbon absorption capacity in 2050, which is the year Korea aims to achieve carbon neutrality. In this regard, carbon farming using abandoned rice paddy fields is evaluated as a promising project.
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Liu, Xiaohui, Yuan Zhang, Guihua Dong, Guanglei Hou, and Ming Jiang. "Landscape Pattern Changes in the Xingkai Lake Area, Northeast China." International Journal of Environmental Research and Public Health 16, no. 20 (2019): 3820. http://dx.doi.org/10.3390/ijerph16203820.
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Understanding landscape change is important for ecologically sustainable development. In this paper, we assessed the spatiotemporal variations of landscape pattern in the Xingkai Lake area using remote sensing data from 1982, 1995, 2000, 2005, 2010, and 2015. Landscape patterns of marshlands, paddy fields, dry farmlands, and their combinations were analyzed at class and landscape levels. We examined the stability of landscape types through principal component analysis based on class level indices for landscape types. The results indicated that marshland areas decreased significantly by 33.87% but paddy fields increased by 1.84 times from 1982 to 2015. The largest conversion of dry farmlands to paddy fields was 90.88 km2 during the period 2010–2015. In contrast, the largest conversion of paddy fields to dry farmlands was 86.03 km2 during the period 2000–2005. The difference in relative change revealed that dry farmlands had experienced a greater relative change than paddy fields since 2000. The interspersion and juxtaposition index decreased, while the number of patches grew. This showed that landscape fragmentation was increasing and the landscape pattern was becoming dispersed. Marshlands were more stable than paddy fields and dry farmlands across all time periods, except for the year 2005.
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Kong, Minjae, Sungwook Jeon, Kyoung-Hwa Kwon, Soon-I. Song, and Kwang-Ho Kim. "Evaluation of the Effect of Burning Rice Paddy Fields on Arthropods in Rice Paddy Fields and Agricultural Fields." Journal of Environmental Science International 30, no. 12 (2021): 993–1003. http://dx.doi.org/10.5322/jesi.2021.30.12.993.
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Bhtnagar, Anita, Manjeet Kaur, Oshin Dhillon, and Abhay Singh Yadav. "Paddy cum fish culture: Growth performance of Channa punctatus, paddy yield and economics." Journal of Applied and Natural Science 13, no. 1 (2021): 145–56. http://dx.doi.org/10.31018/jans.v13i1.2462.
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Integrating fish and paddy culture may enhance the production with maintaining equitable use of the available land and human resources to ensure global food security. Hence the present study has been carried out to explore the possibility of culture of fish, Channa punctatus in paddy fields with/without supplementary feed. Four treatments (T1: No fish, no pesticide in paddy fields; T2: Fish in paddy fields without pesticide exposure; T3: Fish in paddy fields with are commended dose of pesticide and T4: Fish in paddy fields with pesticide dose as per farmers) were maintained in both experiments (with/without supplementary feed) in 120 m2 paddy plots. Farmers’ treatment without fish was also considered (T5). Fingerlings (15.50±0.40 g) were stocked with 1 fishper 3m2. Water quality, growth performance, carcass composition, paddy yield and economics were studied. Water quality remained in the optimum range for fish culture (D.O. 4.-7.1 mg l-1, pH 7.5-8.8).Growth performance and carcass composition revealed significantly (P<0.05) higher valuesin T2(SGR: 52.03, 129.73; crude protein: 14.8%, 15.0%). The values for paddy productions and economics increased from T1(24±0.326 q ha-1 and INR 32,850.00) to T3(55±0.475 q ha-1and INR 111,672.00), decreased thereafter. Results of supplementary food experiments clearly revealed that although fish growth/yield was higher in T2 (659±0.514 kg ha-1), rice production per hectare (57±0.891 q ha-1) and net revenue gain (INR 237,457.00) was high in T3 with recommended pesticides use. Thus, fish-cum paddy culture can yield economic benefits contributing significantly towards sustainable food security.
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Mukhoriyah, Mukhoriyah, and Dony Kushardono. "APPLICATION OF LAPAN A3 SATELLITE DATA FOR THE IDENTIFICATION OF PADDY FIELDS USING OBJECT BASED IMAGE ANALYSIS (OBIA)." International Journal of Remote Sensing and Earth Sciences (IJReSES) 18, no. 1 (2021): 33. http://dx.doi.org/10.30536/j.ijreses.2021.v18.a3378.
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The role of agriculture is directly related to SDG No.2, which is running a programme until 2030 to reduce national poverty, eradicate hunger by increasing food security and improving nutrition and support sustainable agriculture. Problems faced include the reduction in agricultural land, which results in lower rice production, and the limited information on the monitoring of paddy fields using spatial data. The purpose of this study is to identify paddy fields using LAPAN A3 satellite imagery based on OBIA classification. The data used were from LAPAN A3 multispectral imagery dated 19 June 2017, Landsat 8 imagery dated 17 June 2017, DEM SRTM (BIG), and the Administrative Boundary Map (BIG). The analysis method was segmentation by grouping image pixels, and supervised classification by taking several sample areas based on Random Stratified Sampling. The results will be carried using a confusion matrix. The classification results produced four classes; watery paddy fields, vegetation paddy fields, fallow paddy fields, and non-paddy fields, using of the green, red, and NIR bands for the LAPAN A3 data. From the results of the segmentation process, there remain some oversegmented features in the appearance of the same object. Oversegmentation is due to an inaccurate value assignment to each algorithm parameter when the segmentation process is performed. For example, watery paddy fields appear almost the same as open land (fallow paddy fields), the water object is darker purple. The visual classification results (Landsat 8 data) are considered as the reference for the digital classification results (LAPAN A3). Forty-eight samples were taken and divided into four classes, with each class consisting of 12 samples. The results of the accuracy test show that the total accuracy of the object-based digital classification for visual classification is 62.5% with a Kappa accuracy value of 0.5. The conclusion is that LAPAN A3 data can be used to identify paddy fields based on spectral resolution and to complement Landsat 8 data. To improve the accuracy of the classification results, more samples and the correct RGB composition are needed.
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Jeon, Ji-Hong, Chun G. Yoon, Kwang-Wook Jung, and Jae-Ho Jang. "HSPF-Paddy Development for Simulating Pollutant Loadings from Paddy Fields." Journal of The Korean Society of Agricultural Engineers 47, no. 7 (2005): 57–66. http://dx.doi.org/10.5389/ksae.2005.47.7.057.
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Hu, Xuhua, Yang Xu, Peng Huang, et al. "Identifying Changes and Their Drivers in Paddy Fields of Northeast China: Past and Future." Agriculture 14, no. 11 (2024): 1956. http://dx.doi.org/10.3390/agriculture14111956.
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Northeast China plays a crucial role as a major grain-producing region, and attention to its land use and land cover changes (LUCC), especially farmland changes, are crucial to ensure food security and promote sustainable development. Based on the Moderate Resolution Imaging Spectroradiometer (MODIS) data and a decision tree model, land types, especially those of paddy fields in Northeast China from 2000 to 2020, were extracted, and the spatiotemporal changes in paddy fields and their drivers were analyzed. The development trends of paddy fields under different future scenarios were explored alongside the Coupled Model Intercomparison Project Phase 6 (CMIP6) data. The findings revealed that the kappa coefficients of land use classification from 2000 to 2020 reached 0.761–0.825, with an overall accuracy of 80.5–87.3%. The proposed land classification method can be used for long-term paddy field monitoring in Northeast China. The LUCC in Northeast China is dominated by the expansion of paddy fields. The centroids of paddy fields gradually shifted toward the northeast by a distance of 292 km, with climate warming being the main reason for the shift. Under various climate scenarios, the temperature in Northeast China and its surrounding regions is projected to rise. Each scenario is anticipated to meet the temperature conditions necessary for the northeastward expansion of paddy fields. This study provides support for ensuring sustainable agricultural development in Northeast China.
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Siahaan, R., F. H. Elly, M. R. Imbar, B. Gumilar, and R. Ryan. "Rice land agroecosystem in supporting the development potential of duck-rice integration." IOP Conference Series: Earth and Environmental Science 1341, no. 1 (2024): 012108. http://dx.doi.org/10.1088/1755-1315/1341/1/012108.
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Abstract The agroecosystem of paddy fields in the Tondano Lake area was an environmental system that has been managed directly by farmers for the benefit of food production, namely rice, fiber and various other food products such as ducks. The types of commodities that can be developed in paddy field ecosystems were more limited than those in dry land ecosystems. In fact, the farmer community in paddy fields generally had weak capabilities, especially with regard to capital, there was a rice farming culture that is not aware of damaging the environment and low technology adoption. Farmers use paddy fields for the development of duck livestock. The problem was how far the paddy field agroecosystem supports the potential for the development of duck-rice integration (INTIP). The purpose of this study was to analyze the biophysical characteristics, management of land resources and duck livestock resources. The research method used was a survey method with locations around Lake of Tondano. The number of respondents was 30 farmers who developed local ducks in paddy fields. Data analysis used was descriptive analysis. The results showed that the area of rice fields in District of Remboken was 323 Ha, South Tondano was 457 Ha, West Kakas was 664 Ha, East Langowan was 663 Ha and West Tondano was 693 Ha. The population of ducks for the five districts was respectively 8177 ducks, 6525, 4311, 4277 and 9240 ducks. Paddy fields are used as duck grazing land after the rice harvest. The feed consumed was the remains of rice that has fallen out, small animals in the fields after harvest and added with “renga”. Based on the results of the study it can be concluded that duck had the potential to be developed in paddy fields with agroecosystems that were only planted with rice plants.
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Andika, Rohdy, and Handoko Hadiyanto. "Factors Affecting the Area of Paddy Field on the Island of Sumatra 2015-2022." East Asian Journal of Multidisciplinary Research 2, no. 11 (2023): 4557–66. http://dx.doi.org/10.55927/eajmr.v2i11.6740.
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This study aims to identify the factors of the number of industries (X1), population (X2) and gross regional domestic product (GRDP) (X3) that affect the area of paddy fields (Y) on the island of Sumatra. The scope of this survey includes 10 provinces on the island of Sumatra.The data used is secondary data derived from BPS and uses panel data type. The analysis method used in this study uses multiple linear regression analysis with SPSS 25 analysis tool. The results of the study indicate that there is a positive relationship between the variables of the number of industries and the number of population with the area of paddy fields, while GRDP has a significant negative effect on the area of paddy fields. These results indicate that an increase in population and industry makes the need for paddy fields also increase while an increase in GRDP will make a decrease in the area of paddy fields.
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Widayat, R., and D. T. Ardianto. "Memedi sawah: environmentally friendly scarecrows for paddy fields." IOP Conference Series: Earth and Environmental Science 905, no. 1 (2021): 012026. http://dx.doi.org/10.1088/1755-1315/905/1/012026.
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Abstract Four decades ago, memedi sawah or traditional scarecrows were commonly used to repel rice-eating sparrows in paddy fields in Java. Nowadays, many farmers use plastic sheets, a non-environmentally friendly material, tied to rows of bamboo sticks in the paddy field to repel sparrows. Memedi sawah is now transformed into works of art and displayed in prestigious art galleries. This study aimed to bring back memedi sawah made from environmental-friendly materials to the paddy fields. The production was done by implementing environmental-friendly design principles and the concept of aèng, a theory of creating Javanese cultural arts. The result of this study is expected to help farmers in protecting paddy plants while preserving the cultural values and spirit of the local community.
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Asra, Reza, Andi Ayu Nurnawati, Muh Irwan, and Muh Faisal Mappiasse. "Analisis Perubahan Lahan Sawah Berbasis Sistem Informasi Geografis di Wilayah Perkotaan Pangkajene Kabupaten Sidenreng Rappang." JURNAL GALUNG TROPIKA 9, no. 3 (2021): 286–97. http://dx.doi.org/10.31850/jgt.v9i3.683.
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The conversion of agricultural land at a high enough rate may threaten the food security of the population. The agricultural land most vulnerable to conversion is the rice field. The aim of this study was to determine the changes in paddy fields from 2013 to 2020, the distribution of the transformation of paddy fields to other lands, and the factors that influence the conversion of paddy fields. This research was carried out by digitizing the on-screen image method in 2013 and 2020. The classification of land use results from digitization was tested for accuracy by determining the sample points in the GIS (Geographic Information System) application and then compared to the results of the field survey. In addition, an analysis of the changes in paddy fields was carried out by overlaying land use maps in 2013 and 2020. Observations and interviews with people whose land was changing were conducted on the factors affecting the change in paddy fields. Changes in land use over a period of 7 years (2013-2020), namely rice fields, decreased by 149 ha (7.36 percent ). Meanwhile, there has been an increase in the area in other land uses. The function of the paddy fields in the urban area of Pangkajene, Sidrap Regency, has become 18.69 hectares of land built, 59.42 hectares of mixed gardens, 23.13 hectares of open/empty land and 49.11 hectares of land. The factor that affects the conversion of paddy fields in the urban area of Pangkajene is the strategic location of the land, which causes the community to convert its land into a place of trade and services. The increase in the number of people requiring large land areas has led to the construction of many residential complexes in rice fields and the high selling price of rice fields, which encourages farmers to sell their land.
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Nihei, Yasuo, Yuki Ogata, Ryosuke Yoshimura, Takehiko Ito, and Jin Kashiwada. "Subgrid Model of Water Storage in Paddy Fields for a Grid-Based Distributed Rainfall–Runoff Model and Assessment of Paddy Field Dam Effects on Flood Control." Water 16, no. 2 (2024): 255. http://dx.doi.org/10.3390/w16020255.
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Paddy field dams are basin-level flood control measures that promote rainwater storage; however, a general runoff model cannot adequately describe the water balance in paddy fields. This study develops a subgrid model for evaluating paddy water balance considering land use on a computational grid. Subgrid models can account for the storage effect of paddy field dams without disregarding the general grid-based distributed rainfall–runoff model framework. To investigate the effect of current paddy field storage and the introduction of paddy field dams on reducing peak flood discharge, rainfall–runoff analysis was conducted using the proposed model in the Kashima River basin, which flows into Lake Inba-numa in Chiba Prefecture, Japan. The computational results indicated that the rainwater storage effect of current paddy fields reduces the peak river discharge, suggesting that the drainage process of the paddy field should be incorporated into runoff models. Furthermore, the storage effect of paddy fields became more pronounced as the height of the drainage pipe in the paddy field dam increased. The calculated results quantitatively show the flood control effect of paddy field storage over the entire basin; thus, the proposed subgrid model may be a useful tool for promoting basin-level flood control measures.
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Parsa, I. Made. "supabase Please extract the text as it is Here is the extracted text from the image: DENOSING OF HIGH RESOLUTION REMOTE SENSING DATA USING STATIONARY WAVELET TRANSFORM Danang Surya Candra Peneliti Bidang Jianta, Pusdata, LAPAN e-mail: thedananx@yahoo." Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital 10, no. 2 (2013): 113–21. https://doi.org/10.30536/inderaja.v10i2.3279.
Full textAbstract:
Land cover change, from bare land, water and to vegetation, or vice versa can be used as the basis for paddy fields mapping using the theory of probability, that is probability a land cover can be regarded as an paddy fields if a sequence of land cover changes of water, vegetation and bare land or vice versa on multitemporal images have been detected. The data being used were Landsat multitemporal imagery, while the methods being used in this analysis is the transformation of vegetation index and converted to land covers (bare land, water and vegetation). Detection of three types of land covers (bare land-water_vegetasi or viceversa) at sample area is assumed to have a probability 1 as paddy fields, if only two of the land cover types were detected (water and bare land , or water and vegetation , or vegetation or bare land ) the land cover of that pixel is assumed to have the probability as paddy fields 0.67, whereas if only one land cover types were detected for example only of water, or bare land or vegetation only, then the probability as paddy fields is assumed to be just 0.33. The results of the study showed that multitemporal Landsat of the study area is adequate for paddy fields mapping with accuracy of 91.2%.
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Mohd Aris, Nur Atikah, Shaparas Daliman, Pradnya Paramarta Raditya Rendra, Emi Sukiyah, Mohamad Sapari Dwi Hadian, and Nana Sulaksana. "Integrating Remote Sensing and GIS Techniques for Accurate Mapping and Analysis of Paddy Field Distribution in Kelantan: A Case Study." BIO Web of Conferences 73 (2023): 05010. http://dx.doi.org/10.1051/bioconf/20237305010.
Full textAbstract:
This research focuses on studying the distribution of paddy fields in Kelantan between 2016 and 2021, utilizing Geographic Information System (GIS) and satellite imagery from Landsat 8 acquired through remote sensing. The primary objective is to examine the spatial distribution of paddy fields within a specific area in Kelantan and analyze changes that occurred during the mentioned time frame. By combining satellite images, GPS technology, the study aimed to offer comprehensive insights into distribution patterns and changes in paddy fields, which can inform decisions related to paddy field production and agricultural management. Maps of Kelantan were obtained from Earth Explorer websites, processed, and analyzed to calculate vegetation indices like Enhanced Vegetation Index (EVI), Normal Difference Vegetation Index (NDVI), and Soil-Adjusted Vegetation Index (SAVI). The study's key findings reveal the distribution of paddy fields in Kelantan, with an area of 27,420.88 hectares in 2021, marking a 2.31% decrease compared to the previous year's 28,863.91 hectares. The research successfully achieved its goals, assessing vegetation indices and creating a distribution map of paddy fields in Kelantan. These findings have the potential to contribute to effective agricultural management and decision-making processes in the study area.
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Fadilla, Ulfia, Rossie Wiedya Nusantara, and Rinto Manurung. "ANALISIS BEBERAPA SIFAT KIMIA TANAH PADA DUA MACAM PENGGUNAAN LAHAN DI SUNGAI KAKAP, KABUPATEN KUBU RAYA, KALIMANTAN BARAT." Jurnal Tanah dan Sumberdaya Lahan 11, no. 1 (2024): 247–52. http://dx.doi.org/10.21776/ub.jtsl.2024.011.1.26.
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Paddy fields and mixed farming apply intensive agricultural cultivation, and sustainable land use causes changes in land quality, one of which affects soil chemical properties. This study aimed to compare soil chemical properties based on differences in the use of paddy fields and mixed farming in Sungai Kakap District, Kubu Raya Regency, West Kalimantan. Research in the field in Pal IX Village, Sungai Kakap Sub-district, Kubu Raya Regency, for sampling soil samples at 0-20 cm depth. Soil analysis was conducted at the Chemistry and Soil Fertility Laboratory, Faculty of Agriculture, Tanjungpura University. The results showed that the two fields, paddy fields, and mixed farming, had almost the same chemical properties in paddy fields pH, organic C, available P, cation exchange capacity (CEC), exchangeable Ca and exchangeable Mg.
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Huan, Xiujia, Xingtao Wei, Jianping Zhang, et al. "Discovery of the Earliest Rice Paddy in the Mixed Rice–Millet Farming Area of China." Land 11, no. 6 (2022): 831. http://dx.doi.org/10.3390/land11060831.
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Neolithic rice remains were recovered from a mixed rice–millet farming area in China outside the original centers of rice farming. Whether the rice remains were the result of local cultivation or obtained through trade remains unclear. Rice paddy fields are direct evidence of local cultivation. In this study, phytolith samples from the Zhangwangzhuang site were analyzed. The discriminant function distinguished 17 of 30 samples in the suspected paddy field area as rice paddy fields with an average probability of 74%; The proportion of rice bulliform phytoliths with ≥9 scales indicated that rice (Oryza sativa) was still being domesticated and, moreover, six η-type phytoliths from broomcorn millet (Panicum miliaceum) were identified. These results suggested that the suspected paddy field at Zhangwangzhuang might be the earliest rice paddy field (ca. 6000 cal. BP) in northern China and that mixed farming was practiced here since the early Yangshao period. This study adopted discriminant analysis methods to discover ancient rice paddy fields, observed rice paddy fields outside the core rice origin area, and provided the earliest evidence regarding the development of mixed rice–millet farming in the upper Huai River region.
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Shiratani, E., I. Yoshinaga, Y. Feng, and H. Hasebe. "Scenario analysis for reduction of effluent load from an agricultural area by recycling the run-off water." Water Science and Technology 49, no. 3 (2004): 55–62. http://dx.doi.org/10.2166/wst.2004.0162.
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We reviewed rates of nitrogen (N) removal in paddy fields and wetlands. Then we developed a numerical model to simulate N flow in an agricultural paddy field area and analyzed scenarios for recycling the agricultural run-off, including field drainage, from an agricultural area with an irrigation/drainage system. In it, we considered N removal in paddy fields, a regulating reservoir, and canals. The review showed that the rate constant for N removal in paddy fields and wetlands was 0.025 m/d under natural conditions and 0.01 m/d under dark conditions. The scenario analysis of recycling paddy field run-off within the model area indicated that a large amount of the effluent load occurred during the transplanting period and that recycling could reduce the effluent N load. The effluent N load would be equal to the inflowing N load at a 48% recycling rate. In this scenario, paddy fields accounted for most of the reduction in the effluent N load, and the mean removal rates per unit area of paddy field and regulating reservoir were 53.6 g ha-1d-1 and 222.6 g ha-1d-1, respectively.