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Journal articles on the topic 'Natural bulk density of soil'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Matangaran, J. R., U. Suwarna, G. Santosa, S. Trison, and E. I. Putra. "Soil disturbance caused by timber harvesting in a natural forest, West Sumatera Indonesia." IOP Conference Series: Earth and Environmental Science 1315, no. 1 (2024): 012050. http://dx.doi.org/10.1088/1755-1315/1315/1/012050.

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Abstract Logging operations in natural forests generally use bulldozers. Bulldozers skid logs from the stump site to the landing site. The bulldozer maneuvers in the felling area cause skid trails and soil compaction. Soil compaction is one of the negative impacts of logging operations. The research aim is to analyze the level of soil compaction in various bulldozer skidding intensities after logging operations. The research occurred at a natural forest area in Siberut West Sumatera, Indonesia. The results of the study showed that there was a relationship between skidding intensity and the lev

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KISHNÉ, A. SZ, C. L. S. MORGAN, H. C. CHANG, and L. B. KISH. "VIBRATION-INDUCED CONDUCTIVITY FLUCTUATION MEASUREMENT FOR SOIL BULK DENSITY ANALYSIS." Fluctuation and Noise Letters 07, no. 04 (2007): L473—L481. http://dx.doi.org/10.1142/s0219477507004112.

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Soil bulk density is a physical property of soils that affects water storage, water and nutrient movement, and plant root activity in the soil profile. The ability to quantify soil bulk density using vibration-induced conductivity fluctuation was investigated with possible field applications in the future. The AC electrical conductance of soil was measured using a pair of blade-like electrodes while exposing to periodic vibration. The blades were positioned longitudinally and transversally to the direction of the induced vibration to enable the calculation of a normalized index. This normalize

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Pereira, V. P., M. E. Ortiz-Escobar, G. C. Rocha, R. N. Assis Junior, and T. S. Oliveira. "Evaluation of soil physical quality of irrigated agroecosystems in a semi-arid region of North-eastern Brazil." Soil Research 50, no. 6 (2012): 455. http://dx.doi.org/10.1071/sr12083.

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Concern about soil physical quality has grown in recent years, particularly in view of serious problems caused by intensive soil use. We hypothesised that improper soil management in irrigated areas damages the structure of sensitive soils in some regions in North-eastern Brazil. The aim of the study was to evaluate the physical quality of irrigated soils planted with annual and perennial crops, compared with soils under natural vegetation in Ceará State, Brazil. Measurements were made of least limiting water range (LLWR), the S index, and relative density. Undisturbed soil samples were collec

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Reisinger, Thomas W., Phillip E. Pope, and Sheldon C. Hammond. "Natural Recovery of Compacted Soils in an Upland Hardwood Forest in Indiana." Northern Journal of Applied Forestry 9, no. 4 (1992): 138–41. http://dx.doi.org/10.1093/njaf/9.4.138.

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Abstract Recovery of soils compacted from conventional ground-based logging operations was assessed on six upland oak-hickory timber sales in south central Indiana. Two areas were selectively harvested in each of the years 1984, 1986, and 1988. Mean bulk density of undisturbed forest soils ranged from 0.93 to 1.02 mg/m3 for the silt loam soils found on all six study areas. Even though soil disturbance averaged 18% of the total sale area immediately after harvesting, the visible amount of soil disturbance decreased to 2.0 and 2.5% for the areas sampled 2 and 4 years after logging, respectively.

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Guo, Jia, Yanmin Fan, Yunhao Li, et al. "Topography Dominates the Spatial and Temporal Variability of Soil Bulk Density in Typical Arid Zones." Sustainability 16, no. 22 (2024): 9670. http://dx.doi.org/10.3390/su16229670.

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Soil bulk density is a crucial indicator for assessing soil matter storage and soil quality. Due to the complexity of sampling soil bulk density, particularly in deeper layers, it is essential to study the spatial distribution patterns of soil bulk density and their influencing factors. To address the gap in large-scale studies of vertical (from surface to deeper layers) and horizontal (across a broad area) variations in soil bulk density in arid regions, this study focuses on Changji Prefecture, located in the central northern slope of the Tianshan Mountains and characterized by typical verti

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McNabb, David H., and Andrei Startsev. "Seven-Year Changes in Bulk Density Following Forest Harvesting and Machine Trafficking in Alberta, Canada." Forests 13, no. 4 (2022): 553. http://dx.doi.org/10.3390/f13040553.

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Processes responsible for natural recovery of compacted forest soils are poorly understood, making estimating their recovery problematic. Bulk density was measured over 7 years at nine boreal forest sites in Alberta, Canada, where harvest-only and three skidding treatments were installed (~10,000 samples). Air and soil temperatures, soil moisture and redox potential, and snow depth were also measured on the harvest-only and adjacent seven-cycle skid trail. Significant increases in bulk density occurred when the soil water potential was wetter than −25 kPa. After 1 year, an additional significa

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Ding, Junnan, and Shaopeng Yu. "Structural and Functional Characteristics of Soil Microbial Communities in Forest–Wetland Ecotones: A Case Study of the Lesser Khingan Mountains." Life 15, no. 4 (2025): 570. https://doi.org/10.3390/life15040570.

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Soil microorganisms play an essential role in vegetation succession, nutrient cycling, and ecosystem restoration. This study investigates the responses of soil microbial communities to ecological transitions from forest to wetland in the Lesser Khingan Mountains, including mixed forest, conifer forest, wetland edge, and natural wetland. The results indicated that natural wetland soils were weakly acidic and contained significantly higher organic matter, total nitrogen, and available phosphorus compared to other soils. Soil bulk density increased with depth. Actinobacteria, Acidobacteriota, and

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8

Gao, Aimin, and Wei Sun. "Natural Recovery Dynamics of Alfalfa Field Soils under Different Degrees of Mechanical Compaction." Agriculture 14, no. 10 (2024): 1721. http://dx.doi.org/10.3390/agriculture14101721.

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Soil compaction in alfalfa fields has become increasingly severe due to the mechanization of animal husbandry and the increased use of heavy agricultural machinery. Perennial alfalfa land undergoes mechanical compaction several times during the planting period without mechanical tillage. The compacted soil structure may recover through moisture changes, freezing and thawing cycles, and plant growth, but the extent and rate of this recovery remain unknown. In this study, alfalfa plots with two different soil types (medium loam and sandy) in Gansu, China, were selected to address these issues. T

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9

Melese, Solomon, and Ivan Vasenev. "Seasonal dynamics of Podzoluvisol moisture and bulk density in the slope catena at the Forestry Experimental Station of the RSAU-MTAA at different levels of recreational load." АгроЭкоИнфо 2, no. 50 (2022): 43. http://dx.doi.org/10.51419/202122243.

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The seasonal dynamics of soil moisture, bulk density and moisture reserve in the topsoil of Podzoluvisol representative variants at the Forest Experimental Station of the RSAU-MTAA at various levels of recreational load is investigated. The assessment of the influence of recreational load on the surface horizons (A1, A1A2, A2) of Podzoluvisols within the slope catena (the summit of the moraine hill – the middle part of the slope – the lower part of the slope) is given. Three levels of recreational load are considered: minimal (background), medium and strong. The analysis of soil moisture was c

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Liu, X. P., W. J. Zhang, C. S. Hu, and X. G. Tang. "Soil greenhouse gas fluxes from different tree species on Taihang Mountain, North China." Biogeosciences 11, no. 6 (2014): 1649–66. http://dx.doi.org/10.5194/bg-11-1649-2014.

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Abstract. The objectives of this study were to investigate seasonal variation of greenhouse gas fluxes from soils on sites dominated by plantation (Robinia pseudoacacia, Punica granatum, and Ziziphus jujube) and natural regenerated forests (Vitex negundo var. heterophylla, Leptodermis oblonga, and Bothriochloa ischcemum), and to identify how tree species, litter exclusion, and soil properties (soil temperature, soil moisture, soil organic carbon, total N, soil bulk density, and soil pH) explained the temporal and spatial variation in soil greenhouse gas fluxes. Fluxes of greenhouse gases were

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Wojtasik, Mieczysław, and Dawid Szatten. "Granulometryczny wskaźnik gęstości naturalnej gleb = Granulometric coefficient of natural bulk density of soil." Journal of Education, Health and Sport 5, no. 5 (2015): 76–85. https://doi.org/10.5281/zenodo.17444.

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<strong>Wojtasik Mieczysław, Szatten Dawid. </strong><strong>Granulometryczny wskaźnik gęstości naturalnej gleb = </strong><strong>Granulometric coefficient of natural bulk density of soil. </strong><strong>Journal of Education, Health and Sport. </strong><strong>2015;5(5):76-85. ISSN 2391-8306. DOI</strong> <strong>10.5281/zenodo.17444</strong> <strong>http://ojs.ukw.edu.pl/index.php/johs/article/view/2015%3B5%285%29%3A76-85</strong> <strong>https://pbn.nauka.gov.pl/works/559147</strong> <strong>http://dx.doi.org/10.5281/zenodo.17444</strong> <strong>Formerly Journal of Health Sciences. ISSN

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Sun, Junna, Runya Yang, Jinjin Zhu, et al. "Contrasting effects of corn straw biochar on soil water infiltration and retention at tilled and compacted bulk densities in the Yellow River Delta." Canadian Journal of Soil Science 99, no. 4 (2019): 357–66. http://dx.doi.org/10.1139/cjss-2019-0004.

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During field application of biochar, the bulk density of tilled soil initially decreases and then increases over time, until reaching the initial level of compacted soil. This study evaluated the optimal biochar particle size for promotion of water infiltration and retention in a saline soil with various bulk densities after application. Corn straw biochar, pyrolyzed at 450 °C for 0.5 h, was prepared in different particle sizes (S1 ≤ 0.25 mm, S2 = 0.25–1 mm, and S3 = 1–2 mm) and separately mixed into the 0–30 cm soil layer at two rates (R1 = 10 g kg−1 and R2 = 100 g kg−1), with tilled (D1 = 1.

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13

Li, Weiliu, Jingsong Li, Yujie Wu, Kai Guo, Xiaohui Feng, and Xiaojing Liu. "Soil Organic Matter and Bulk Density: Driving Factors in the Vegetation-Mediated Restoration of Coastal Saline Lands in North China." Agronomy 14, no. 9 (2024): 2007. http://dx.doi.org/10.3390/agronomy14092007.

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Coastal saline soils are an important soil resource that, when restored, can enhance arable land and preserve the natural ecology. With the aim of improving the use of coastal saline soils, we conducted a spot survey at Bohai coastal saline land to investigate the differences in soil properties between different vegetation types. The soil physical and chemical properties of various vegetation types, including Aeluropus sinensis, Imperata cylindrica, Tamarix chinensis, Lycium chinense, Hibiscus moscheutos, Helianthus annuus, Gossypium hirsutum, and Zea mays, were examined at two depth layers: 0

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14

Wang, Shu Li, and Chao Ma. "The Spatial Heterogeneity of the Soil Bulk Density under Different Management Types of Pinus koraiensis Forests." Advanced Materials Research 726-731 (August 2013): 4315–18. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.4315.

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Through the manner of field investigation and room experiments, by using software SPSS 13.0, software ArcGis 9.3 and geostatistical analysis tool, the spatial heterogeneity of the soil bulk density under virgin Pinus koraiensis forest, Betula platyphylla and Pinus koraiensis mixed forest (Pinus koraiensis natural regeneration), Betulaplatyphylla and Pinus koraiensis mixed forest (Pinus koraiensis planted) and pure Pinus koraiensis plantation were studied. The characteristics of the spatial heterogeneity of the soil bulk density under different forest types were different, the spatial heterogen

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15

Radder, Varsha Somaraddi, Vidyavathi G. Yadahalli, G. S. Yadahalli, et al. "Evaluation of Soil Physical Properties in Natural and Conventional Farming in the Northern Dry Zone of Karnataka, India." Journal of Scientific Research and Reports 31, no. 1 (2025): 605–17. https://doi.org/10.9734/jsrr/2025/v31i12805.

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This study examines variations in soil properties resulting from natural and conventional farming (Farmer Practices) methods across three distinct duration categories (less than 5 years, 5 to 10 years and 10 to 15 years) in the Northern Dry Zone of Karnataka. The results revealed that natural farming consistently produced lower soil bulk density, higher soil porosity, greater water-holding capacity and improved aggregate stability when compared to conventional farming practices. Over time, natural farming led to a decrease in bulk density; however, conventional practices showed an increase. So

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Tarus, George K., and Stanley W. Nadir. "Effect of Forest Management Types on Soil Carbon Stocks in Montane Forests: A Case Study of Eastern Mau Forest in Kenya." International Journal of Forestry Research 2020 (October 7, 2020): 1–10. http://dx.doi.org/10.1155/2020/8862813.

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Mau Forest, a major forest reserve in Kenya, has experienced anthropogenic disturbances through encroachment and forest fires. This study aimed at comparing the soil carbon stocks in different forest management types as well as how seasonal climatic changes influence its dynamics. The study was undertaken in the Eastern Mau block (Sururu) which forms part of the greater Mau Forest Complex. The forest management interventions have been in place for over 15 years with disturbed (fire) natural forest experiencing fires in 2005, 2007, and 2014 while cypress plantations were established in 1994. A

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Wojtasik, Mieczysław, and Dawid Szatten. "Wyznaczanie gęstości naturalnej gleb = Determination of natural bulk density of soils." Journal of Education, Health and Sport 5, no. 3 (2015): 218–28. https://doi.org/10.5281/zenodo.16379.

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<strong>Wojtasik Mieczysław, Szatten Dawid. Wyznaczanie gęstości naturalnej gleb = </strong><strong>Determination of natural bulk density of soils</strong><strong>. </strong><strong>Journal of Education, Health and Sport. </strong><strong>2015;5(3):218-228. ISSN 2391-8306. DOI: </strong><strong>10.5281/zenodo.16379</strong> <strong>http://ojs.ukw.edu.pl/index.php/johs/article/view/2015%3B5%283%29%3A218-228</strong> <strong>https://pbn.nauka.gov.pl/works/550075</strong> <strong>http://dx.doi.org/10.5281/zenodo.16379</strong> <strong>Formerly Journal of Health Sciences. ISSN 1429-9623 / 2300-665

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18

Liu, X. P., W. J. Zhang, C. S. Hu, and X. G. Tang. "Soil greenhouse gas fluxes from different tree species on Taihang Mountain, North China." Biogeosciences Discussions 10, no. 7 (2013): 11037–76. http://dx.doi.org/10.5194/bgd-10-11037-2013.

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Abstract. The objectives of this study were to investigate seasonal variation of greenhouse gas fluxes from soils on sites dominated by plantation (Robinia pseudoacacia, Punica granatum, and Ziziphus jujube) and natural regenerated forests (Vitex negundo var. heterophylla, Leptodermis oblonga, and Bothriochloa ischcemum), and to identify how tree species, litter exclusion, and soil properties (soil temperature, soil moisture, soil organic carbon, total N, soil bulk density, and soil pH) explained the temporal and spatial variance in soil greenhouse gas fluxes. Fluxes of greenhouse gases were m

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Shang, Qing, Changfu Li, and Yanchun Liu. "The Negative Effects of Tourist Trampling on the Soil Physical Properties and Microbial Community Composition in a Natural Oak Forest." Forests 15, no. 8 (2024): 1419. http://dx.doi.org/10.3390/f15081419.

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Tourist trampling is a serious disturbance affecting the soil structure and microbial community in forests. However, it is still unclear whether the response of soil microorganisms to trampling is attributed to the alterations in soil physical (soil bulk density and total porosity) or soil chemical (total nitrogen and soil organic carbon) properties. To determine the response and mechanism of soil microbial community composition to tourist trampling, we conducted a field experiment including four levels of trampling intensity (control, mild, moderate, and severe) at the Baotianman forest ecoto

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Karugia, E., F. Kariuki, and J. Mwaniki. "Influence of soil physical factors on productivity of herbaceous forage species in Kivaa and Ntugi rangelands in Eastern Kenya." African Journal of Pure and Applied Sciences 1, no. 1 (2020): 17–24. http://dx.doi.org/10.33886/ajpas.v1i1.168.

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Rangelands are extensive tracts of land with natural vegetation which is the main forage resource for domestic and wild ungulates. This study investigated the influence of soil texture, bulk density, and moisture content on the production of herbaceous forage species biomass in Kivaa and Ntugi rangelands in Eastern Kenya. Stratified random sampling was used where one out of four blocks of the target rangelands was picked and three belt transects established. Along the belt transects, ten experimental plots of 5 metres by 5 metres were established at intervals of 5 metres. Key forage species we

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Wahyono, Sri Cahyo, Ahmad Kurnain, Iryanti Fatyasari Nata, and Mufidah Asyari. "Post Peat Fire Soil Natural Recovery Based on Physical Properties in South Kalimantan, Indonesia." International Journal of Plant & Soil Science 35, no. 18 (2023): 1416–24. http://dx.doi.org/10.9734/ijpss/2023/v35i183409.

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Indonesia always experiences forest and peatland fires during the extreme dry season. Forest and land fires greatly affect productivity and the environment. The fire was very detrimental to the ecological, economic and social aspects, in addition to the spread of smoke in various countries. This study examines the recovery rate of peat soil after the 2015 fire in the Balangan River - Batangalai River Peat Hydrological Unit (KHG), South Kalimantan. Test results on post-fire land in 2015 after five years (T+5) with a pH value of 2.93; water content is 270.94% and bulk density is 0.225 g cm-3. At

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She, Dong Li, Ming An Shao, Luis Carlos Timm, and Klaus Reichardt. "Temporal changes of an alfalfa succession and related soil physical properties on the Loess Plateau, China." Pesquisa Agropecuária Brasileira 44, no. 2 (2009): 189–96. http://dx.doi.org/10.1590/s0100-204x2009000200011.

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The objective of this work was to investigate the relationship between changes in the plant community and changes in soil physical properties and water availability, during a succession from alfalfa (Medicago sativa L.) to natural vegetation on the Loess Plateau, China. Data from a succession sere spanning 32 years were collated, and vegetative indexes were compared to changes related to soil bulk density and soil water storage. The alfalfa yield increased for approximately 7 years, then it declined and the alfalfa was replaced by a natural community dominated by Stipa bungeana that began to t

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LIMON, MAHEDI HASAN, SAIDA HOSSAIN ARA, and MOHAMMAD GOLAM KIBRIA. "Factors Influencing the Natural Forest Regeneration at Khadimnagar National Park, Bangladesh." Borneo Journal of Resource Science and Technology 11, no. 1 (2021): 73–83. http://dx.doi.org/10.33736/bjrst.3437.2021.

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Natural regeneration is an indicator of a healthy forest, hence, understanding the influence of site factors on natural regeneration is a significant concern for ecologists. This work aimed to assess the impact of site factors on natural tree regeneration at Khadimnagar National Park (KNP). Biotic factors (tree density, tree species richness, and basal area), physical factors (elevation, canopy openness), and soil properties (bulk density, moisture content, soil pH, organic matter, sand, silt, and clay) data were investigated from 71 sample plots to examine their effects on natural regeneratio

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Al-Shatib, Mohammed A. M., Guangnan Chen, John McL Bennett, and Troy A. Jensen. "Monitoring the behaviour of Australian Vertosols in response to the shrink–swell characteristic and cotton picker traffic." Soil Research 59, no. 4 (2021): 396. http://dx.doi.org/10.1071/sr20222.

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Vertosols are widely used for cotton production globally. One main advantage of this soil type is its capacity to improve its structure gradually due to natural processes over time. However, Vertosols are highly susceptible to compaction, especially under wet soil conditions. This study investigated the change in characteristics of Australian Vertosols due to the impact of rainfall, seasonal variability, and John Deere 7760 cotton picker traffic. Soil cores were collected between October 2016 and May 2017. Measurements of soil physical properties (soil water content, dry bulk density, and soil

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TOOBPENG, Naritsara, and Sirithan JIEMSIRILERS. "Fast microwave synthesis of high-silica natural soil based porous geopolymer." Journal of Metals, Materials and Minerals 34, no. 1 (2024): 1828. http://dx.doi.org/10.55713/jmmm.v34i1.1828.

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This study describes a simple microwave process for fabricating porous geopolymer-polymer based Shirasu soil. The porous geopolymer samples were synthesized using sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) solution as alkaline solution in range of 0.5 M to 9 M. After mixing process, the geopolymer slurry was heated and stimulated geopolymerization reaction by different microwave powers at 200 W, 500 W and 700 W for 30 s, 60 s, 90 s and 120 s. The influence of NaOH concentration, microwave powers and heating times on the apparent bulk density, the water adsorption was focused. Result

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Stephen, J. Mallo, and A.Umbugadu Alu. "GEOTECHNICAL STUDY OF THE PROPERTIES OF SOILS: A CASE STUDY OF NASSARAWA – EGGON TOWN AND ENVIRONS, NORTHERN NIGERIA." Continental J. Earth Sciences 7, no. 1 (2012): 40–47. https://doi.org/10.5281/zenodo.833425.

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The principal objective in geotechnical testing is to know the properties and behavior of soil as an engineering material. The performance of soil in engineering practice is greatly influenced by the natural environmental conditions and conditions imposed by construction of structures. The aim of soil testing is to obtain reasonably representative values of the soil properties that are reliable and have direct and significant bearing upon the solution of the practical problems involved especially in various aspects of civil engineering. This important more so that Nasarawa State is relatively

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Valpassos, Maria Alexandra Reis, Eloiza Gomes Silva Cavalcante, Ana Maria Rodrigues Cassiolato, and Marlene Cristina Alves. "Effects of soil management systems on soil microbial activity, bulk density and chemical properties." Pesquisa Agropecuária Brasileira 36, no. 12 (2001): 1539–45. http://dx.doi.org/10.1590/s0100-204x2001001200011.

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The objective of this experiment was to study the effects of soil management systems on the bulk density, chemical soil properties, and on the soil microbial activity on a Latossolo Vermelho distrófico (Oxisol). Soil samples were collected from plots under the following management conditions: a) natural dense "cerrado" vegetation (savanna); b) degraded Brachiaria decumbens pasture, 20 years old; c) no-tillage treatment with annual crop sequence (bean, corn, soybean and dark-oat in continuous rotation), 8 years old; d) conventional tillage treatment with crop residues added to the soil, and ann

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Wu, Jin Xia, Yan Xia Wang, Qi Bo Chen, and Zhi Long Tong. "Soil Improvement of Pinus yunnanensis Forest at Different Age in Central Yunnan Plateau." Advanced Materials Research 864-867 (December 2013): 2565–68. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.2565.

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Took the Pinus yunnanensis forest as the research object, and took planted forest for control, carried on a research in soil physicochemical properties of different forest ages of Pinus yunnanensis. The results show that: For secondary forests at different ages, (1) middle-aged forest has the smallest soil bulk density and largest soil natural water content. Compared with the same age planted forest, secondary forest has smaller soil bulk density and larger soil natural water content.(2) Middle-aged forest has the smallest soil pH value, and the tallest total nitrogen content and soil organic

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OPEYEMI AKINTOLA, OLUWATOYIN, ADEWUNMI IDAYAT BODEDE, MICHAEL MICHAEL, AYODEJI GIDEON ADEBAYO, and OLAWALE NUREAN SULAIMAN. "Assessment of Soil Properties Under Different Land Use Types in Olokemeji Forest Reserves in Ogun State Southwestern Nigeria." Journal of Bioresource Management 7, no. 3 (2020): 73–84. http://dx.doi.org/10.35691/jbm.0202.0141.

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Knowledge of soil properties is essential for environmental sustainability for any forest reserve or plantation. The physical and chemical properties of soil under three different land uses was investigated to assess the nutrient and fertility status of the soils. Fifteen soil samples, each collected from different locations within the natural forest, plantation and farm land were analyzed for soil texture, bulk density, porosity, pH, organic carbon, organic matter content, total nitrogen, available phosphorus, Na, K, Ca, Mg, Zn, Cu, Fe and Mn. Texturally, the soils were loamy, loamy sand and

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Dymov, A. A., V. V. Startsev, N. M. Gorbach, et al. "Changes in Soil and Vegetation with Different Number of Passes of Wheeled Forestry Equipment (Middle Taiga, Komi Republic)." Eurasian Soil Science 55, no. 11 (2022): 1633–46. http://dx.doi.org/10.1134/s1064229322110023.

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Abstract— Changes in podzolic soils (Albic Retisols) and vegetation after felling blueberry spruce forest in the middle taiga of the Komi Republic are discussed. Changes in the morphological and physicochemical properties of soils after three and ten passes of the forwarder, as well as after ten passes with subsequent leveling of the ruts are characterized. It is shown that the number of forwarder passes is the decisive factor in soil changes. At the site with three passes, the formation of ruts with a depth of 11 ± 3 cm is observed, while at the site with ten passes, the depth of the ruts can

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Rodríguez-León, Carlos H., Clara P. Peña-Venegas, Armando Sterling, et al. "Soil Quality Restoration during the Natural Succession of Abandoned Cattle Pastures in Deforested Landscapes in the Colombian Amazon." Agronomy 11, no. 12 (2021): 2484. http://dx.doi.org/10.3390/agronomy11122484.

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Successional processes in abandoned pastures in the Amazon region have been well-documented for the floristic component; however, soil succession has been poorly studied. This study assessed the physical, chemical and biological responses of soils in the Amazon region during the natural succession process in two main landscapes of the Colombian Amazon. Soil data on soil physico–chemical (bulk density, macroaggregates, pH and minerals) and biological (soil macrofauna) composition were evaluated along chronosequence with four successional stages: (i) degraded pastures, (ii) young (10–20-year-old

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Sohrabi, Hadi, Meghdad Jourgholami, Farzam Tavankar, Rachele Venanzi, and Rodolfo Picchio. "Post-Harvest Evaluation of Soil Physical Properties and Natural Regeneration Growth in Steep-Slope Terrains." Forests 10, no. 11 (2019): 1034. http://dx.doi.org/10.3390/f10111034.

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Protection of forest soils during harvesting operations is necessary to reduce damage and accelerate recovery time. The current study aims to evaluate soil physical properties, natural regeneration, and its recovery process in treatments including slope gradient, traffic intensity and skid trail after long periods of time, after ceasing the timber harvesting operations. The most recent skidding operations within each 5 years recovery period were studied for a chronosequence of 20 years. Soil samples were taken in abandoned skid trails and data were recorded on naturally regenerated species and

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Pandey, Hari Prasad, Tek Narayan Maraseni, Armando Apan, and Shreejana Bhusal. "Achieving SOC Conservation without Land-Use Changes between Agriculture and Forests." Sustainability 16, no. 16 (2024): 7207. http://dx.doi.org/10.3390/su16167207.

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Global land-use changes impact soil’s ability to perform essential functions. This study investigates whether soil organic carbon (SOC) can be conserved without altering land use in traditional farming systems and degraded natural forests, focusing on ‘disturbed’ agricultural soils and ‘undisturbed’ forest soils. We also examine the influence of dominant crops on SOC within the top 30 cm of soil in data-deficient regions of Nepal. Using a multi-stage cluster sampling design, we tested 12 regression models to identify the best relationships among variables such as SOC, soil bulk density (BD), p

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NAETH, M. A., A. W. BAILEY, and W. B. McGILL. "PERSISTENCE OF CHANGES IN SELECTED SOIL CHEMICAL AND PHYSICAL PROPERTIES AFTER PIPELINE INSTALLATION IN SOLONETZIC NATIVE RANGELAND." Canadian Journal of Soil Science 67, no. 4 (1987): 747–63. http://dx.doi.org/10.4141/cjss87-073.

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A study was conducted in Solonetzic mixed prairie of southern Alberta to evaluate and determine the longevity of selected ecosystem responses to pipeline installation. Five adjacent natural gas pipelines on a series of rights-of-way (ROW) were studied at three sites. The lines, which were installed in 1957, 1963, 1968, 1972 and 1981, had diameters of 86, 86, 91, 107 and 107 cm, respectively. Soils were analyzed for particle size distribution, bulk density, pH, electrical conductivity, ion composition, and organic matter content. It was concluded that pipeline construction in Solonetzic mixed p

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Bitew, Amare. "Role of Land Use Dynamic Nature and Their Influence on Soil Physico-Chemical Properties in Various Watersheds in Ethiopia." JOURNAL OF ADVANCES IN AGRICULTURE 15 (February 13, 2024): 1–17. http://dx.doi.org/10.24297/jaa.v15i.9572.

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Land-use changes have remarkable effects on the dynamics of soil properties. The lowest mean of bulk density, the highest fraction of clay, soil pH, soil organic matter, total nitrogen, available phosphorus, cation exchange capacity, and exchangeable base were recorded in forest land. Also, soil depth data might fluctuate with increasing soil depth. This variation might be due to inappropriate land use management led to disturbance of soil nutrient status, indicating that the soil condition in the cultivated land and plantation forest is getting below the condition of soils under natural fores

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Singh, Jasbir, Indrani Bora, and Arundhati Baruah. "Changes in the physico-chemical properties of soil under shifting cultivation with special reference to Karbi Anglong district of Assam." Indian Journal of Forestry 26, no. 2 (2003): 116–22. http://dx.doi.org/10.54207/bsmps1000-2003-73jvu4.

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The effect of shifting cultivation on changes in the physico-chemical properties of soils was studied in the jhum and nearby natural forest areas. Various soil properties investigated were bulk density, texture, pH, hydraulic conductivity, organic carbon, total nitrogen, available phosphorus and exchangeable potassium, calcium and magnesium. Soil properties were compared at five different soil depths: 0-5 cm, 5-25 cm, 25-50 cm, 50-100 cm and 100+ cm. Lowest and highest soil bulk densities were recorded in land after burning and 1st year fallow, respectively. Natural forest had a moderate soil

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Olness, Alan, Dian Lopez, David Archer, et al. "Factors Affecting Microbial Formation of Nitrate-Nitrogen in Soil and Their Effects on Fertilizer Nitrogen Use Efficiency." Scientific World JOURNAL 1 (2001): 122–29. http://dx.doi.org/10.1100/tsw.2001.308.

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Mineralization of soil organic matter is governed by predictable factors with nitrate-N as the end product. Crop production interrupts the natural balance, accelerates mineralization of N, and elevates levels of nitrate-N in soil. Six factors determine nitrate-N levels in soils: soil clay content, bulk density, organic matter content, pH, temperature, and rainfall. Maximal rates of N mineralization require an optimal level of air-filled pore space. Optimal air-filled pore space depends on soil clay content, soil organic matter content, soil bulk density, and rainfall. Pore space is partitioned

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Lenevych, Oksana. "THE IMPACT OF RECREATION LOADING ON PHYSICAL AND WATER-PHYSICAL PROPERTIES OF BROWN FOREST SOILS." PROBLEMS OF GEOMORPHOLOGY AND PALEOGEOGRAPHY OF THE UKRANIAN CARPATHIANS AND ADJACENT AREAS, no. 11(01) (January 13, 2021): 311–28. http://dx.doi.org/10.30970/gpc.2020.1.3214.

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The article analyses the influence of recreational load on the physical and water-physical properties of brown forest soils. It is established that the complete or partial absence of litter on the pathway contributes to the rapid evaporation of moisture from the upper horizon (0−5 cm) of the soil, reducing the porosity total, increasing the density solid phase and buk density. It was found that with the increase of the buk density by 12,5 % the water permeability of the soil decreases 33 times in comparison with the control. A significant increase in the bulk density of the structure by 39−48

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Bakker, DM, and RJ Davis. "Soil deformation observations in a vertisol under field traffic." Soil Research 33, no. 5 (1995): 817. http://dx.doi.org/10.1071/sr9950817.

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A procedure based on the point grid method has been used to measure and visualize soil deformation resulting from tyre loads in a controlled traffic system. Several tests were performed in an irrigated heavy clay soil under various moisture conditions and two different geometries of the wheel tracks, recessed and elevated. This represented normal working conditions and illustrated that significant deformations were occurring. Deformations increased with moisture content and the number of passes. From the point grid displacements, bulk density changes were calculated which corresponded with the

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Hu, W., M. A. Shao, and B. C. Si. "Seasonal changes in surface bulk density and saturated hydraulic conductivity of natural landscapes." European Journal of Soil Science 63, no. 6 (2012): 820–30. http://dx.doi.org/10.1111/j.1365-2389.2012.01479.x.

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Dormaar, J. F., and J. M. Carefoot. "Implications of crop residue management and conservation tillage on soil organic matter." Canadian Journal of Plant Science 76, no. 4 (1996): 627–34. http://dx.doi.org/10.4141/cjps96-112.

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Under natural grassland or native prairie, aboveground residue or surface litter modifies the microenvironment. It promotes water infiltration and, by insulating the soil surface, moderates soil temperatures and limits evaporation. Root mass decomposes and transforms within the conditions created by surface litter. Together with root exudates, this below-ground residue or subsurface litter reacts with soil minerals to form aggregates, lower bulk density and increase water-holding capacity. Bringing such soils under cultivation leads to lower soil organic matter content, thereby increasing bulk

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Devine, Warren D., Allan E. Houston, and Donald D. Tyler. "Growth of Three Hardwood Species Through 18 Years on a Former Agricultural Bottomland." Southern Journal of Applied Forestry 24, no. 3 (2000): 159–65. http://dx.doi.org/10.1093/sjaf/24.3.159.

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Abstract The effects of seed source, fertilization, disking, and mowing on the growth of sweetgum (Liquidambar styraciflua L.), American sycamore (Platanus occidentalis L.), and green ash (Fraxinus pennsylvanica Marsh.) were examined 18 yr after planting to determine the best system for afforestation of a previously farmed bottomland site in southwest Tennessee. Natural regeneration on the site as well as variations in soil bulk density and soil series were analyzed. Overall survival was significantly higher for sweetgum (93%) and green ash (95%) than for sycamore (88%). Height growth of sweet

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Mahalder, Badal, John S. Schwartz, Angelica M. Palomino, and Jon Zirkle. "Scour Hole Development in Natural Cohesive Bed Sediment around Cylinder-Shaped Piers Subjected to Varying Sequential Flow Events." Water 13, no. 22 (2021): 3289. http://dx.doi.org/10.3390/w13223289.

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Scour evolution and propagation around a cylinder in natural cohesive sediment was uniquely investigated under multi-flow event varying sequentially by velocity magnitudes. This flume study differs from others that only used test sediment with commercially available clays for single flow. The objective of this study was to explore the potential differences in scour hole development in natural riverbed sediments subjected to varying flow velocity scenarios, advancing our understanding from existing studies on scour. The study consisted of 18 experimental runs based on: velocity, flow duration,

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Ocaña-Reyes, Jimmy Alcides. "Short-term impacts of conservation and traditional agriculture on natural resources and corn yield." Revista Investigación Agraria. 2, no. 2 (2020): 27–36. http://dx.doi.org/10.47840/reina20211.

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Crops production on the Peru’s highland is carried out under the traditional agriculture’s practices of, degrading natural resources. Contrary, conservation agriculture’s practices are less tedious and conservationist to natural resources. A field experiment with corn crop was set up to compare the two agricultural systems, evaluating bulk density, volumetric humidity, earthworm population, soil erosion, corn ear yield, and economic utility. An LSD test was designed to assess bulk density, volumetric humidity, earthworm population, and corn yield, with 20 replications each one. Additionally, a

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Rahmani Haftkhani, Zahra, Mehrdad Nikooy, Ali Salehi, Farzam Tavankar, and Petros A. Tsioras. "Post-Harvest Evaluation of Logging-Induced Compacted Soils and the Role of Caucasian Alder (Alnus subcordata C.A.Mey) Fine-Root Growth in Soil Recovery." Forests 16, no. 7 (2025): 1044. https://doi.org/10.3390/f16071044.

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Accelerating the recovery of compacted soils caused by logging machinery using bioengineering techniques is a key goal of Sustainable Forest Management. This research was conducted on an abandoned skid trail with a uniform 15% slope and a history of heavy traffic, located in the Nav forest compartment of northern Iran. The main objectives were to assess (a) soil physical properties 35 years after skidding by a tracked bulldozer, (b) the impact of natural alder regeneration on soil recovery, and (c) the contribution of alder fine-root development to the restoration of compacted soils in beech s

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Lenevych, Oksana, and Inna Rybalka. "THE IMPACT OF REFORESTATION ON PHYSICAL AND HYDROPHYSICAL PROPERTIES OF SOILS OF THE FALLOW LANDS (SKOLIVSKI BESKYDY, THE UKRAINIAN CARPATHIANS)." PROBLEMS OF GEOMORPHOLOGY AND PALEOGEOGRAPHY OF THE UKRANIAN CARPATHIANS AND ADJACENT AREAS, no. 14 (December 30, 2022): 88–103. http://dx.doi.org/10.30970/gpc.2022.1.3833.

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The article tackles the impacts of anthropogenic load on the physical and hydrophysical soil properties. In order to better comprehend the processes of spontaneous sylvatisation in a mountain region (the Pohartsi boundary, Koziova village, the Skolivski Beskydy physiographic region) four study plots were selected representing the successional sequence: forest → pasture → hay meadow → arable lands. Land patches that were affected the least by anthropogenic load restored faster to their natural baseline conditions. Tilling appeared to retardate restoration processes, however those anyway took pl

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Kaczmarek, Zbigniew, Piotr Gajewski, Andrzej Mocek, Wojciech Owczarzak, and Bartłomiej Glina. "Physical and water properties of selected Polish heavy soils of various origins." Soil Science Annual 66, no. 4 (2015): 191–97. http://dx.doi.org/10.1515/ssa-2015-0036.

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Abstract The paper presents the characteristics of selected physical, chemical, and water properties of four mineral arable soils characterized with heavy and very heavy texture. Soil samples from genetic horizons of black earths from areas near Kętrzyn, Gniew and Kujawy, and alluvial soils from Żuławy were used. The following properties were determined in the samples of undisturbed and disturbed structure: texture, particle density, bulk density, porosity, natural and hygroscopic moistures, maximal hygroscopic capacity, saturated hydraulic conductivity, potential of water bonding in soil, tot

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Ndoye, Fatou, Aboubacry Kane, Eddy Léonard Ngonkeu Mangaptché, et al. "Changes in Land Use System and Environmental Factors Affect Arbuscular Mycorrhizal Fungal Density and Diversity, and Enzyme Activities in Rhizospheric Soils of Acacia senegal (L.) Willd." ISRN Ecology 2012 (August 14, 2012): 1–13. http://dx.doi.org/10.5402/2012/563191.

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The responses of the soil microbial community features associated to the legume tree Acacia senegal (L.) Willd. including both arbuscular mycorrhizal fungal (AMF) diversity and soil bacterial functions, were investigated under contrasting environmental conditions. Soil samples were collected during dry and rainy seasons in two contrasting rainfall sites of Senegal (Dahra and Goudiry, in arid and semiarid zone, resp.). Soils were taken from the rhizosphere of A. senegal both in plantation and natural stands in comparison to bulk soil. A multiple analysis revealed positive correlations between s

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Watanabe, Rafaela, Getulio Coutinho Figueiredo, Alvaro Pires da Silva, Júlio César Lima Neves, and Teógenes Senna de Oliveira. "Physical quality of a Luvisol under agroforestry systems in a semi-arid region, Brazil." Soil Research 54, no. 4 (2016): 430. http://dx.doi.org/10.1071/sr15179.

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Agroforestry systems provide many environmental benefits in semi-arid regions; however, trampling by cattle, and agricultural practices, can degrade physical quality of the soil. The aim of this study was to evaluate the degree of compaction and the compression behaviour of a Luvisol after 14 years under agro-silvopastoral (ASP) and silvopastoral systems (SILV), compared with a soil under natural vegetation (NV). We evaluated the degree of soil compactness, compaction index, pre-consolidation pressure, maximum bulk density, critical water content and the stocks of total organic carbon (C), org

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Rahmawati, Reni, Penyang Penyang, Eritha K. Firdara, Yusintha T, Rosdiana Rosdiana, and Patricia E. Putir. "Changes In Physical and Chemical Properties of Peat In Various Ages of Oil Palm Plant In East Kotawaringin District." Devotion Journal of Community Service 3, no. 12 (2022): 1132–48. http://dx.doi.org/10.36418/dev.v3i12.234.

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The purpose of this study was to examine changes in the physical and chemical properties of natural peat forests and peatlands designated for oil palm plantations at various ages of oil palm planting. The research was carried out in 4 (four) locations in East Kotawaringin Regency, namely: (1) Natural peat swamp forest in Kota Besi District (2) Peat land designated for oil palm plantations planting age less than 4 years in Parenggean District; (3) Peat land designated for oil palm plantations with a planting age of 4-10 years in Cempaga District; and (4) peat land designated for oil palm planta

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