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Journal articles on the topic 'Soil enrichment'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Wang, Bai, Liu, Zhang, Chen, and Lu. "Enrichments of Cadmium and Arsenic and Their Effects on the Karst Forest Area." International Journal of Environmental Research and Public Health 16, no. 23 (2019): 4665. http://dx.doi.org/10.3390/ijerph16234665.

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An understanding of the enrichment mechanisms of cadmium (Cd) and arsenic (As) in the process of rock weathering and soil formation is essential to develop agriculture according to local conditions. However, the enrichments of soil Cd and As under natural background conditions in karst areas are still uncertain. The enrichment factor, geo-accumulation index, redundancy analysis, and other methods were used to analyze the enrichment degree and the influencing factors of Cd and As on 5 rock–soil profiles and 15 topsoil samples, which were collected from a karst forest area in Libo County, Guizho

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2

Wawrik, Boris, Lee Kerkhof, Jerome Kukor, and Gerben Zylstra. "Effect of Different Carbon Sources on Community Composition of Bacterial Enrichments from Soil." Applied and Environmental Microbiology 71, no. 11 (2005): 6776–83. http://dx.doi.org/10.1128/aem.71.11.6776-6783.2005.

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ABSTRACT Soil is a highly heterogeneous matrix, which can contain thousands of different bacterial species per gram. Only a small component of this diversity (maybe <1%) is commonly captured using standard isolation techniques, although indications are that a larger proportion of the soil community is in fact culturable. Better isolation techniques yielding greater bacterial diversity would be of benefit for understanding the metabolic activity and capability of many soil microorganisms. We studied the response of soil bacterial communities to carbon source enrichment in small matrices by m

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3

Tesfahunegn, G. B., and P. G. L. Vlek. "Assessing sediment enrichment ratio in Mai-Negus catchment, northern Ethiopia." Soil and Water Research 9, No. 1 (2014): 38–45. http://dx.doi.org/10.17221/16/2013-swr.

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Soil degradation is a threat to sustainable development in Ethiopia. However, degradation indicators, such as sediment enrichment ratio (SER), are not adequately documented in literature. This study aims to investigate the SER of different erosion-status sites (aggrading, stable, eroded) in various landforms in Mai-Negus catchment, northern Ethiopia. The erosion-status sites in the landforms were identified using field indicators, and soil samples were collected for analysis of selected soil parameters. In this study, due to the ratio of aggrading to eroded or stable sites at catchment and lan

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Abam Eyong, God’swill, Therese Ntonzi Nganje, Chrsitopher Iorfa Adamu, George Eni Ikpi, and Augustine Odey Idu. "bioavailability and environmental implications of major and trace metals in manihot esculenta (cassava) grown on shaly and calcareous soils in parts of southern benue trough, nigeria." Global Journal of Geological Sciences 22, no. 1 (2024): 11–30. http://dx.doi.org/10.4314/gjgs.v22i1.2.

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The study was carried out to investigate the concentration of major and trace metals in shaly and calcareous soil and their uptake in cassava plant parts in order to compare the levels of this metals in both soils as well as the cassava plant growing on the soil. Soil samples (0-30 cm and 30-60 cm) depth and cassava plants (leaves, stems and tubers) were collected from cultivated farm lands and analyzed for major and trace metals. (Ca, K, Al, Na, Fe, Cu, Zn, Pb, Co and Mo) using inductively coupled plasma mass spectrometery (ICP-MS). The pH and L01 of the soil sample were also measured. Result

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DRURY, C. F., D. A. TEL, and E. G. BEAUCHAMP. "15N ANALYSIS OF HIGHLY ENRICHED SAMPLES ON A MASS SPECTROMETER." Canadian Journal of Soil Science 67, no. 4 (1987): 779–85. http://dx.doi.org/10.4141/cjss87-075.

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Mass spectrometer analysis of highly enriched 15N samples underestimated the 15N enrichment. Conventional 15N analysis utilizes a ratiometer procedure in which the ratio of 29N2 to 28N2 ions is determined. Samples containing high enrichments had a low quantity of 28N2 ions and it appeared background contamination of 28N2 produced erroneous results with this procedure. Therefore, results obtained with the ratiometer procedure were compared to those obtained with a scanning procedure which measured the 28N2, 29N2 and 30N2 peak heights. The 15N enrichment was determined by the scanning procedure

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6

KUMAR, MANOJ. "Profile-wise enrichment of metallic pollutants (Pb, Cr and Cd) in various sewage and non-sewage irrigated soils of Prayagraj." Annals of Plant and Soil Research 26, no. 2 (2024): 323–32. http://dx.doi.org/10.47815/apsr.2024.10367.

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The study examined the profile-wise enrichment of metallic pollutants (Pb, Cr and Cd) at different sites, i.e., Naini, Draupadi Ghat, Phaphamau and Beligaon in Prayagraj (U.P.), India. The soil samples were collected from different soil profile depths: 0-15, 15-30, 30-45 and 45-60 cm. It was observed that maximum enrichment of Pb, Cr and Cd was found at the (0-15 cm) depth of sewage and non-sewage irrigated soil (5.12±0.42, 4.08±038 and 3.58±031 mg kg-1 ) and (1.58±0.09, 1.08±0.09 and 1.02±0.08 mg kg-1 ) and minimum enrichment was found at the (45-60 cm) depth (2.18, 0.56 and 0.48 mg kg-1 ) an

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7

Shim, J. H., H. H. Powers, C. W. Meyer, et al. "Hydrologic control of the oxygen isotope ratio of ecosystem respiration in a semi-arid woodland." Biogeosciences 10, no. 7 (2013): 4937–56. http://dx.doi.org/10.5194/bg-10-4937-2013.

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Abstract. We conducted high frequency measurements of the δ18O value of atmospheric CO2 from a juniper (Juniperus monosperma) woodland in New Mexico, USA, over a four-year period to investigate climatic and physiological regulation of the δ18O value of ecosystem respiration (δR). Rain pulses reset δR with the dominant water source isotope composition, followed by progressive enrichment of δR. Transpiration (ET) was significantly related to post-pulse δR enrichment because the leaf water δ18O value showed strong enrichment with increasing vapor pressure deficit that occurs following rain. Post-

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8

Shim, J. H., H. H. Powers, C. W. Meyer, et al. "Hydrologic control of the oxygen isotope ratio of ecosystem respiration in a semi-arid woodland." Biogeosciences Discussions 10, no. 1 (2013): 1–48. http://dx.doi.org/10.5194/bgd-10-1-2013.

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Abstract. We conducted high frequency measurements of the δ18O value of atmospheric CO2 from a juniper (Juniperus monosperma) woodland in New Mexico, USA, over a four-year period to investigate climatic and physiological regulation of the δ18O value of ecosystem respiration (δR). Rain pulses reset δR with the dominant water source isotope composition, followed by progressive enrichment of δR. Transpiration (ET) was significantly related to post-pulse δR enrichment because leaf water δ18O value showed strong enrichment with increasing vapor pressure deficit that occurs following rain. Post-puls

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9

Grosser, Robert J., Michael Friedrich, David M. Ward, and William P. Inskeep. "Effect of Model Sorptive Phases on Phenanthrene Biodegradation: Different Enrichment Conditions Influence Bioavailability and Selection of Phenanthrene-Degrading Isolates." Applied and Environmental Microbiology 66, no. 7 (2000): 2695–702. http://dx.doi.org/10.1128/aem.66.7.2695-2702.2000.

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ABSTRACT The sorption of organic contaminants by natural organic matter (NOM) often limits substrate bioavailability and is an important factor affecting microbial degradation rates in soils and sediments. We hypothesized that reduced substrate bioavailability might influence which microbial assemblages are responsible for contaminant degradation under enrichment culture conditions. Our primary goal was to characterize enrichments in which different model organic solid phases were used to establish a range of phenanthrene bioavailabilities for soil microorganisms. Phenanthrene sorption coeffic

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10

Hahn, Jens, Thanh Bui, Mathias Kessler, et al. "Catchment Soil Properties Affect Metal(loid) Enrichment in Reservoir Sediments of German Low Mountain Regions." Applied Sciences 12, no. 5 (2022): 2277. http://dx.doi.org/10.3390/app12052277.

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Sediment management is a fundamental part of reservoir operation, but it is often complicated by metal(loid) enrichment in sediments. Knowledge concerning the sources of potential contaminants is therefore of important significance. To address this issue, the concentrations and the mobile fractions of metal(loid)s were determined in the sediments and the respective catchment areas of six reservoirs. The results indicate that reservoirs generally have a high potential for contaminated sediment accumulation due to preferential deposition of fine particles. The median values of the element-specif

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11

Mullins, Angela R., and Daniel J. Bain. "Spring water discharge and metal enrichment in urban soils." Environmental Research Communications 6, no. 10 (2024): 105023. http://dx.doi.org/10.1088/2515-7620/ad7f2d.

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Abstract Urban centers have inherited a unique mix of persistent contamination that impacts interactions among urban soil and groundwater systems. In particular, the potential for urban groundwater to transport contaminants from surface sources through the subsurface environment and ultimately to soils is not well understood. Studies have focused on specific ‘natural’ mechanisms driving distribution of metals in urban soils. However, very few studies have examined the accumulation of contamination in soils at groundwater discharge locations (springs) and the potential for groundwater to redist

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12

Zhou, Wenxiang, Guilin Han, Man Liu, Chao Song, and Xiaoqiang Li. "Geochemical Distribution Characteristics of Rare Earth Elements in Different Soil Profiles in Mun River Basin, Northeast Thailand." Sustainability 12, no. 2 (2020): 457. http://dx.doi.org/10.3390/su12020457.

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Exploring the distributions of rare earth elements (REEs) in soil profiles is essential to understanding how natural and anthropogenic factors influence the geochemical behaviors of REEs. This study aimed to learn about the distribution characteristics of REEs in soils, including their fractionation and enrichment, and to explore the influence of soil pH and soil organic carbon (SOC) on REEs. One hundred and three samples were collected from six soil profiles under different land uses (paddy field: T1, T3; forest land: T2, T6; wasteland: T4; building site: T5) in the Mun River Basin, Northeast

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13

Garten Jr., Charles T. "Relationships among forest soil C isotopic composition, partitioning, and turnover times." Canadian Journal of Forest Research 36, no. 9 (2006): 2157–67. http://dx.doi.org/10.1139/x06-115.

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The purpose of this research was to test the hypothesis that vertical enrichment of soil δ13C values is related to rates of soil C turnover in undisturbed, mature forest ecosystems. Soil C and N were measured at nine sites along an altitudinal gradient in the southern Appalachian Mountains (Tennessee and North Carolina, USA). Measurements indicated greater labile and total soil C stocks with increasing altitude. Laboratory incubations (3 days) of rewetted, air-dry soils indicated potential soil C mineralization (µg CO2 produced·g1 soil C) declined with elevation. A principal component analysi

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14

Qin, Haolin. "Study on the Characteristics and Influencing Factors of Selenium Content in Soil of Western Hubei Province, China." International Journal of Natural Resources and Environmental Studies 2, no. 1 (2024): 124–28. http://dx.doi.org/10.62051/10.62051/ijnres.v2n1.15.

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Mastering the distribution of selenium in soils is vital for the development of selenium-enriched industries. This study focuses on Xintang Township in Enshi City, western Hubei Province, known for its selenium-rich soils, analyzing 2,469 soil samples to understand selenium distribution and its influencing factors. Key findings include: 1. Selenium content in surface soils ranges from 0.14 to 25.74 mg/kg, with an average of 0.81 mg/kg, and 86.23% of the area has selenium-rich soils. 2. Soil selenium content is significantly influenced by the parent material, especially soils from the Permian b

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15

SALEY, Abdoulatif ABASS, Alphonse Kouakou YAO, and Kouassi Ernest AHOUSSI. "Assessment of Metal Enrichment in the Koma Bangou (Niger) Gold Panning Area Soils and Tailings." International Journal of Environment and Climate Change 14, no. 11 (2024): 436–49. http://dx.doi.org/10.9734/ijecc/2024/v14i114558.

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Artisanal and small-scale gold mining at Koma Bangou (Niger) has been going on since the Sahelian 1984’s drought, with introduction of ore leaching in the year 2009. The use of chemicals in the ore processing results in metal enrichment and pollution at the cyanidation sites. The aim of this work is to assess the metal enrichment of soils and tailings at Koma Bangou. Geochemical data acquired with portable XRF analyzer corrected with ICP-MS data, were used to assess the enrichment level of As, Cr, Cu, Mn, Pb and Zn in the soils and tailings samples using the enrichment factor and soil-geochemi

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16

Friedrich, M., R. J. Grosser, E. A. Kern, W. P. Inskeep, and D. M. Ward. "Effect of Model Sorptive Phases on Phenanthrene Biodegradation: Molecular Analysis of Enrichments and Isolates Suggests Selection Based on Bioavailability." Applied and Environmental Microbiology 66, no. 7 (2000): 2703–10. http://dx.doi.org/10.1128/aem.66.7.2703-2710.2000.

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ABSTRACT Reduced bioavailability of nonpolar contaminants due to sorption to natural organic matter is an important factor controlling biodegradation of pollutants in the environment. We established enrichment cultures in which solid organic phases were used to reduce phenanthrene bioavailability to different degrees (R. J. Grosser, M. Friedrich, D. M. Ward, and W. P. Inskeep, Appl. Environ. Microbiol. 66:2695–2702, 2000). Bacteria enriched and isolated from contaminated soils under these conditions were analyzed by denaturing gradient gel electrophoresis (DGGE) and sequencing of PCR-amplified

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17

Perveen, Nazia, Mariam Ayub, Tanvir Shahzad, et al. "Soil carbon mineralization in response to nitrogen enrichment in surface and subsurface layers in two land use types." PeerJ 7 (July 8, 2019): e7130. http://dx.doi.org/10.7717/peerj.7130.

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Atmospheric nitrogen (N) deposition increases N availability in soils, with consequences affecting the decomposition of soil carbon (C). The impacts of increasing N availability on surface soil C dynamics are well studied. However, subsurface soils have been paid less attention although more than 50% soil C stock is present below this depth (below 20 cm). This study was designed to investigate the response of surface (0–20 cm) and subsurface (20–40 cm and 40–60 cm) C dynamics to 0 (0 kg N ha−1), low (70 kg N ha−1) and high (120 kg N ha−1) levels of N enrichment. The soils were sampled from a c

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18

Hofbauer, Michael, David Kincl, Jan Vopravil, David Kabelka, and Petr Vráblík. "Preferential Erosion of Soil Organic Carbon and Fine-Grained Soil Particles—An Analysis of 82 Rainfall Simulations." Agronomy 13, no. 1 (2023): 217. http://dx.doi.org/10.3390/agronomy13010217.

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Soil erosion by water causes the loss of soil mineral particles and soil organic carbon (SOC). For determining the effectiveness of soil conservation measures on arable land, rainfall simulations are regularly carried out in field trials in the Czech Republic. The objective of this study was to analyze a dataset from 82 rainfall simulations on bare fallow soils, containing information on slope inclination, soil texture, soil bulk density, SOC, and soil loss with respect to the preferential erosion of fine-grained soil particles and the enrichment of SOC in the eroded soil. Each rainfall simula

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19

Asamoah, Benjamin Darko, Paul Danyi, Bernice Araba Otoo, Daniel Adusu, and Bright Ankudze. "Contamination Status of Residential and Farmland Surface Soils Within the Sunyani Municipality of Ghana." Current World Environment 19, no. 1 (2024): 83–92. http://dx.doi.org/10.12944/cwe.19.1.8.

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Exposure to heavy metals poses serious human health and ecological threats, especially in developing countries where ecological risk assessment and remediation are often ignored. While many studies have reported heavy metal toxicities in rapidly urbanizing cities with increased anthropogenic activities, limited information exists on metal toxicities and their ecological risks in soils within the Sunyani Municipality. Top soils were sampled from residential and farmland surface soils and analyzed for the concentration and potential risks for nine heavy metals within Sunyani Municipality. Apart

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20

Jia, Miao, Yuhua Wang, Qingxu Zhang, et al. "Effect of Soil pH on the Uptake of Essential Elements by Tea Plant and Subsequent Impact on Growth and Leaf Quality." Agronomy 14, no. 6 (2024): 1338. http://dx.doi.org/10.3390/agronomy14061338.

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Tea plant is an acidophilic plant, and soil pH has an important effect on the absorption and enrichment of elements, tea plant growth and quality. In this study, rhizosphere soils and leaves of tea plants from 30 tea plantations were collected to determine soil pH and multi-element content of soil and leaves of tea plants, to obtain and validate key elements that are enriched by pH affecting tea plants, and to analyze the effects of pH on the growth and quality of tea plants. The results showed that soil pH significantly affected the enrichment of 15 elements by tea plants, and the enrichment

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Taylor, M. D., and N. D. Kim. "Dealumination as a mechanism for increased acid recoverable aluminium in Waikato mineral soils." Soil Research 47, no. 8 (2009): 828. http://dx.doi.org/10.1071/sr09053.

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This paper assesses a potentially interesting soil process, dealumination, as the mechanism for the increase observed in strong acid recoverable Al and associated elements in farmed soils compared with background soils in the Waikato Region of New Zealand. Waikato Regional Council has been measuring an established set of 7 soil quality chemical and physical parameters and concentrations of 33 elements as part of a Regional Soil Quality Monitoring program since 2003. Statistical comparison of farmed to background soils, relative surface enrichments, and inter-element correlations enable us to i

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22

Hardy, Kathleen R., and Gary M. King. "Enrichment of High-Affinity CO Oxidizers in Maine Forest Soil." Applied and Environmental Microbiology 67, no. 8 (2001): 3671–76. http://dx.doi.org/10.1128/aem.67.8.3671-3676.2001.

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ABSTRACT Carboxydotrophic activity in forest soils was enriched by incubation in a flowthrough system with elevated concentrations of headspace CO (40 to 400 ppm). CO uptake increased substantially over time, while the apparent Km (app Km ) for uptake remained similar to that of unenriched soils (<10 to 20 ppm). Carboxydotrophic activity was transferred to and further enriched in sterile sand and forest soil. The app Km s for secondary and tertiary enrichments remained similar to values for unenriched soils. CO uptake by enriched soil and freshly collected forest soil was inhibited at heads

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23

Kakabayev, Anuarbek A., Botagoz U. Sharipova, Natalia V. Baranovskaya, et al. "Impact of Environmental Conditions on Soil Geochemistry in Southern Kazakhstan." Sustainability 16, no. 15 (2024): 6361. http://dx.doi.org/10.3390/su16156361.

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This study investigated the elemental composition of soils in Kyzylorda and Turkestan (southern Kazakhstan), an area rich in natural resources but facing potential environmental threats from industry and agriculture. The goal was to establish baseline geochemical values and assess soil contamination risks. Soil samples were collected from across the region and analyzed using ICP-MS and INAA techniques, providing a comprehensive profile of 72 elements. Statistical analysis revealed significant variations in elemental concentrations, with enrichments observed for specific elements when compared

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24

Wu, Min-jing, Si-yu Huang, Jia-qi Wu, Lin-Lin Tang, Yu-yan Guo, and Ren-hua Huang. "Research Progress in Plant Selenium Enrichment." International Journal of Multidisciplinary Research and Growth Evaluation 6, no. 2 (2025): 1272–74. https://doi.org/10.54660/.ijmrge.2025.6.2.1272-1274.

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Selenium (Se) is an essential micronutrient for human health, with soil availability determining plant uptake. Global distribution varies, with China having both deficient and selenium-rich regions. Selenate shows higher bioavailability than selenite due to weaker soil adsorption. Soil pH and organic matter critically influence selenium availability, with alkaline conditions favoring selenate. Fertilizer type and application timing affect plant uptake, with foliar selenate application during late growth stages being most effective. Optimizing soil properties and rhizosphere processes can enhan

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25

Wu, Yunjie, Xin Tian, Runze Wang, Mingyi Zhang, and Shuo Wang. "Effects of vegetation restoration on distribution characteristics of heavy metals in soil in Karst plateau area of Guizhou." PeerJ 11 (March 17, 2023): e15044. http://dx.doi.org/10.7717/peerj.15044.

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In southwest China, vegetation restoration is widely used in karst rocky desertification control projects. This technology can effectively fix the easily lost soil, gradually restore the plant community and improve soil fertility. However, the change law of soil heavy metals in the restoration process remains to be further studied. Therefore, in this work, Guizhou Caohai Nature Reserve as a typical karst area was taken as the research object to investigate the influence of vegetation restoration technology on repairing soil heavy metal pollution. The spatial distribution characteristics of soi

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26

Wasli, M. E., N. N. C. Laujang, K. Meekiong, et al. "Estimating soil organic carbon at Takasago UNIMAS Educational Forest for forest rehabilitation." IOP Conference Series: Earth and Environmental Science 1053, no. 1 (2022): 012006. http://dx.doi.org/10.1088/1755-1315/1053/1/012006.

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Abstract Soil Organic Carbon (SOC) has long been known as an indicator of soil health. This study aims to estimate the amount of SOC at Takasago-UNIMAS Educational Forest, a post-construction site, for forest rehabilitation. Since 2018, rehabilitation approaches have been conducted in the UNIMAS campus to restore these land areas via enrichment planting. The estimation of SOC was conducted at three sites; Secondary Forest (SF), Enrichment Planting site (2018) (EP18) and Enrichment Planting site (2019) (EP19). In each study plot, soil samples from different depths were collected for further ana

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Ji, Wenbing, Zhixiang Luo, Jianyu Huang, et al. "Geochemical Behaviors of Heavy Metal(loid)s in Soil Ferromanganese Nodules in Typical Karst Areas in Southwest China." Agronomy 13, no. 6 (2023): 1602. http://dx.doi.org/10.3390/agronomy13061602.

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The ferromanganese nodules (FMNs) developing in soils of karst regions are naturally characterized by high heavy metal(loid)s contents due to several geological factors. Soil FMNs can considerably influence the geochemical behaviors of soil heavy metal(loid)s. However, the mechanisms of the FMN effects in soils of karst areas soils remain unclear, resulting in less understanding of the development process of karst soils. Therefore, the present study aims to investigate 21 individual FMNs collected in soils derived from carbonate rocks in Guangxi province, China, to reveal the mechanisms of hea

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Zhou, Wenxiang, Guilin Han, Man Liu, Chao Song, Xiaoqiang Li, and Fairda Malem. "Vertical Distribution and Controlling Factors Exploration of Sc, V, Co, Ni, Mo and Ba in Six Soil Profiles of The Mun River Basin, Northeast Thailand." International Journal of Environmental Research and Public Health 17, no. 5 (2020): 1745. http://dx.doi.org/10.3390/ijerph17051745.

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Exploring the enrichment and controlling factors of heavy metals in soils is essential because heavy metals can cause severe soil contamination and threaten human health when they are excessively enriched in soils. Soil samples (total 103) from six soil profiles (T1 to T6) in the Mun River Basin, Northeast Thailand, were collected for the analyses of the content of heavy metals, including Sc, V, Co, Ni, Mo, Ba. The average contents of soil heavy metals decrease in the following order: Ba, V, Ni, Sc, Co, and Mo (T1, T3, T4 and T5); Ni, V, Ba, Co, Sc, Mo, and Ba (T2); Ba, V, Sc, Ni, Mo, and Co (

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Lorenz, Marcel, Delphine Derrien, Bernd Zeller, Thomas Udelhoven, Willy Werner, and Sören Thiele-Bruhn. "The linkage of 13C and 15N soil depth gradients with C:N and O:C stoichiometry reveals tree species effects on organic matter turnover in soil." Biogeochemistry 151, no. 2-3 (2020): 203–20. http://dx.doi.org/10.1007/s10533-020-00721-3.

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AbstractThe knowledge of tree species dependent turnover of soil organic matter (SOM) is limited, yet required to understand the carbon sequestration function of forest soil. We combined investigations of 13C and 15N and its relationship to elemental stoichiometry along soil depth gradients in 35-year old monocultural stands of Douglas fir (Pseudotsuga menziesii), black pine (Pinus nigra), European beech (Fagus sylvatica) and red oak (Quercus rubra) growing on a uniform post-mining soil. We investigated the natural abundance of 13C and 15N and the carbon:nitrogen (C:N) and oxygen:carbon (O:C)

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Sahu, Vipin, Dinesh Mani, Bechan Singh, Mohd Mohasin, and Jeetendra Verma. "Enrichment of Cd, Cr, Pb and Biological Detoxification Strategies in Sewage Irrigated Soils." International Journal of Plant & Soil Science 35, no. 18 (2023): 599–609. http://dx.doi.org/10.9734/ijpss/2023/v35i183325.

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Aim: Long-term use of sewage-sludge and improper management of agricultural lands can lead to an elevated heavy metal concentration in the soil resulting in barren soil. The present investigation was carried out to study the influence of different soil characteristics on the enrichment of Cd, Cr and Pb and their detoxification strategies in sewage irrigated soil profiles of Prayagraj region, India. Methodology: Di-acid mixture method used for soil analysis. The clean filtrate was used for the estimation of the heavy metals (Cd, Cr and Pb) by Atomic Absorption Spectrophotometer (AAS) (AAnalyst6

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Filippov, D. V., I. N. Chursin, A. D. Boyarenkova, and D. D. Rulev. "Results of soil carbonate enrichment research in irrigated areas using remote sensing data." Geodesy and Cartography 986, no. 8 (2022): 39–44. http://dx.doi.org/10.22389/0016-7126-2022-986-8-39-44.

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The authors discuss a soil carbonate enrichment problem in the Volgograd region. These processes cause a decrease in yield and require timely identification and assessment of manifestation extent. Observing of large irrigated areas is very difficult. Therefore, the possibilities of monitoring soil carbonate enrichment processes using the analysis of Earth remote sensing data are becoming relevant. The aim of this work is to research the relationship of soil carbonate enrichment with the spectral characteristics of the surface obtained from the data of the “Resurs-P” ultra-high resolution satel

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Zhu, Xiao Long, Guo Juan Gan, Hang Zhou, et al. "Transfer Characteristics of Cd in Paddy Soil-Rice System under Field Condition." Applied Mechanics and Materials 737 (March 2015): 367–73. http://dx.doi.org/10.4028/www.scientific.net/amm.737.367.

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It is important to control Cadmium (Cd) content in rice and ensure the grain security. The transfer characteristics of Cd in paddy soil-rice system between different soil types (red soil and purple soil) under field condition were researched to provide a theoretical basis for Cd environmental management in paddy. In this study, many rice plant samples and corresponding paddy soil samples were collected from fields around the industrial and mining area in central Hunan province in 2011 and 2012. The Cd concentration of samples was analyzed, and the degree of Cd contamination was evaluated. More

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Laribi, Abdelkader, and Nabila Saidani. "ASSESSMENT OF Cu, Fe AND Zn CONTAMINATION IN AGRICULTURAL SOILS AROUND THE MEFTAH CEMENT PLANT, ALGERIA." Radovi Šumarskog fakulteta Univerziteta u Sarajevu 21, no. 1 (2016): 271–78. http://dx.doi.org/10.54652/rsf.2016.v1.i1.303.

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UDK 631.453:666.94(65) An attempt was made to investigate the concentrations of Cu, Fe and Zn in agricultural soils around the Meftah cement plant, Algeria. Forty soil samples were collected at two soil depths, 0-10 cm and 10-20 cm. The soil samples were digested with the EPA method and the concentrations of heavy metals were determined by atomic absorption spectrometry. The concentrations ranged from 7.22 to 55.75 mg kg-1 for Cu, 16160.8 to 19742.2 mg kg-1for Fe and 44.46 to 200.26 mg kg-1for Zn. The magnitude of the mean concentration values indicated the following order: Fe >> Z

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Perumal, Mugunthan, Mohd Effendi Wasli, Ho Soo Ying, Jonathan Lat, and Hamsawi Sani. "Association between Soil Fertility and Growth Performance of Planted Shorea macrophylla (de Vriese) after Enrichment Planting at Rehabilitation Sites of Sampadi Forest Reserve, Sarawak, Malaysia." International Journal of Forestry Research 2017 (2017): 1–16. http://dx.doi.org/10.1155/2017/6721354.

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A study was conducted to determine the status of soil properties after enrichment planting in comparison to an adjacent secondary forest and to evaluate the effect of enrichment planting of Shorea macrophylla (de Vriese) on the soil fertility status with special reference to Soil Fertility Index (SFI) and Soil Evaluation Factor (SEF) at Sampadi Forest Reserve, Sarawak. The study sites were stands rehabilitated in different years (1996: SM96; 1997: SM97; 1998: SM98; 1999: SM99) and secondary forest (SF). Findings indicated that the soils at rehabilitation sites and SF were strongly acidic in na

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Moret, Sònia, Manuela Hidalgo, and Juan M. Sanchez. "Hollow-Fiber Liquid-Phase Microextraction (HF-LPME) Coupled On-Line to Liquid Chromatography for the Determination of the Herbicides 2,4-Dichlorophenoxyacetic Acid and 2-Methyl-4-chlorophenoxyacetic Acid and Their Main Metabolites in Soil Samples." Separations 10, no. 5 (2023): 273. http://dx.doi.org/10.3390/separations10050273.

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The use of hollow-fiber liquid-phase microextraction (HF-LPME) is very promising for the clean-up, enrichment, and analysis of chlorophenoxyacetic acid herbicides and their metabolites from environmental and biological samples. An on-line methodology coupling HF-LPME (using a hydrophobic polypropylene hollow fiber of 57 cm length, 0.3 mm i.d., 0.2 μm pore size, and 75% porosity) and HPLC-UV has been developed for the analysis of these compounds in soil samples taken from environments treated with these herbicides. Di-hexyl ether was found to be the best solvent for the enrichment of the target

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Ge, Zhiwei, Ran An, Shuiyuan Fang, et al. "Phragmites australis+Typha latifoliaCommunity Enhanced the Enrichment of Nitrogen and Phosphorus in the Soil of Qin Lake Wetland." Scientifica 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/8539093.

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Aquatic plants play an essential role and are effective in mitigating lake eutrophication by forming complex plant-soil system and retaining total nitrogen (TN) and phosphorus (TP) in soils to ultimately reduce their quantities in aquatic systems. Two main vegetation types (Phragmites australiscommunity andP. australis+Typha latifoliacommunity) of Qin Lake wetland were sampled in this study for the analysis of TN and TP contents and reserves in the wetland soils. The results showed that (1) the consumption effect of Qin Lake wetland on soluble N was much more significant than on soluble P. (2)

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Rusinov, Aleksei V., Vladimir V. Sliusarenko, Oleg V. Kabanov, Tatiana V. Fediunina, and Dmitrii A. Rusinov. "Soil Enrichment and Crop Yield Enhancement Technique." Advances in Dynamical Systems and Applications 16, no. 1 (2021): 181. http://dx.doi.org/10.37622/adsa/16.1.2021.181-188.

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Hu, Shuijin, Mary K. Firestone, and F. Stuart Chapin. "Soil microbial feedbacks to atmospheric CO2 enrichment." Trends in Ecology & Evolution 14, no. 11 (1999): 433–37. http://dx.doi.org/10.1016/s0169-5347(99)01682-1.

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Monard, C., F. Binet, and P. Vandenkoornhuyse. "Short-Term Response of Soil Bacteria to Carbon Enrichment in Different Soil Microsites." Applied and Environmental Microbiology 74, no. 17 (2008): 5589–92. http://dx.doi.org/10.1128/aem.00333-08.

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ABSTRACT The response of bacteria in bulk soil and earthworm casts to carbon enrichment was studied by an RNA stable-isotope probing/terminal restriction fragment length polymorphism strategy with 13C-labeled glucose and acetate. Both the soil microsite status and the carbon enrichment selected rapidly for different active bacterial communities, which resulted in different degradation kinetics. Our study clearly illustrates the biases that are generated by adding C substrates to detect metabolically active bacteria in soil.

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Ngole, V. M. "Using soil heavy metal enrichment and mobility factors to determine potential uptake by vegetables." Plant, Soil and Environment 57, No. 2 (2011): 75–80. http://dx.doi.org/10.17221/125/2010-pse.

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This study investigated copper (Cu) and lead (Pb) enrichment factor (EF) and mobility factor (MF) as possible indicators of their uptake by spinach (Spinaceae oleraceae) and carrots (Daucus carota) grown on a sludge-amended luvisol (SAL). Sewage sludge was applied to luvisol at different rates and spinach and carrots planted. Enrichment of Cu and Pb in SAL was determined, and values regressed with those of Cu and Pb concentrations in spinach and carrots. Concentration of Cu and Pb in vegetables was calculated using the regression model obtained, and calculated values compared with actual value

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Abdullaev, Ilkhomjon, Abdumanap Nasirov, Gayrat Yakubov, and Nargiza Abdullaeva. "Application of GIS technologies in the investigation of soil salinity." E3S Web of Conferences 386 (2023): 01009. http://dx.doi.org/10.1051/e3sconf/202338601009.

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Soil salinization is the major problem affecting the productivity of irrigated lands. In Uzbekistan, irrigated area amounts to 4.5 million hectares or about 10% of Uzbekistan’s total area and almost 46.6% of these lands are affected by increasing salinity. The main reason for these conditions of irrigated land is the effect caused by natural factors (primary salinity) - inefficient natural drainage, saline groundwater, high evapotranspiration rates, and high capillary capacity of the soil. Moreover, human-induced processes (so-called “secondary salinity”), which lead to the enrichment of miner

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Syrchina, N. V., L. V. Pilip, T. Ya Ashikhmina, and G. Ya Kantor. "Effect of glauconite-containing wastes obtained during phosphorite enrichment on lead mobility in soils." Povolzhskiy Journal of Ecology, no. 3 (November 13, 2022): 350–60. http://dx.doi.org/10.35885/1684-7318-2022-3-350-360.

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Lead (plumbum, Pb) is a toxic element of the first hazard class. Global soil pollution with Pb leads to severe consequences for the environment and human health. Mobile Pb forms represent a special environmental danger. To immobilize Pb in soils, various materials (meliorants) are used which can convert it into some form poorly soluble in water and weak acids. The search for safe natural materials for the rehabilitation of contaminated soils is of great practical importance. Glauconite-containing phosphorite tailings (PT) are promising reclamation materials. The main component of PT, glauconit

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Sansupa, Chakriya, Sara Fareed Mohamed Wahdan, Terd Disayathanoowat, and Witoon Purahong. "Identifying Hidden Viable Bacterial Taxa in Tropical Forest Soils Using Amplicon Sequencing of Enrichment Cultures." Biology 10, no. 7 (2021): 569. http://dx.doi.org/10.3390/biology10070569.

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This study aims to estimate the proportion and diversity of soil bacteria derived from eDNA-based and culture-based methods. Specifically, we used Illumina Miseq to sequence and characterize the bacterial communities from (i) DNA extracted directly from forest soil and (ii) DNA extracted from a mixture of bacterial colonies obtained by enrichment cultures on agar plates of the same forest soil samples. The amplicon sequencing of enrichment cultures allowed us to rapidly screen a culturable community in an environmental sample. In comparison with an eDNA community (based on a 97% sequence simil

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Kawałko, Dorota, and Anna Karczewska. "Profile Distributions of Potentially Toxic Metal(loid)s in Soils of the Middle Odra Floodplain (SW Poland)." International Journal of Environmental Research and Public Health 20, no. 5 (2023): 4196. http://dx.doi.org/10.3390/ijerph20054196.

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Floodplain soils are often contaminated with potentially toxic elements of geogenic and anthropogenic origin. This also applies to a valley of the Odra river, which in its upper reach flows through areas of historical and contemporary mining and heavy industry. This study examined the distribution of typically anthropogenic metal(loid)s, i.e., Pb, Zn, Cu, As and Cd, and geogenic metals, i.e., Mn and Fe, in soil profiles of the middle Odra valley, and analyzed factors that determine their concentrations. Thirteen soil profiles, located inter the embankment area and outside the embankments, were

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Duarte, Gabriela Frois, Alexandre Soares Rosado, Lucy Seldin, Welington de Araujo, and Jan Dirk van Elsas. "Analysis of Bacterial Community Structure in Sulfurous-Oil-Containing Soils and Detection of Species Carrying Dibenzothiophene Desulfurization (dsz) Genes." Applied and Environmental Microbiology 67, no. 3 (2001): 1052–62. http://dx.doi.org/10.1128/aem.67.3.1052-1062.2001.

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ABSTRACT The selective effects of sulfur-containing hydrocarbons, with respect to changes in bacterial community structure and selection of desulfurizing organisms and genes, were studied in soil. Samples taken from a polluted field soil (A) along a concentration gradient of sulfurous oil and from soil microcosms treated with dibenzothiophene (DBT)-containing petroleum (FSL soil) were analyzed. Analyses included plate counts of total bacteria and of DBT utilizers, molecular community profiling via soil DNA-based PCR-denaturing gradient gel electrophoresis (PCR-DGGE), and detection of genes tha

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Swęd, Maciej, and Przemysław Niedzielski. "Geochemistry and mineralogy of technogenic soils developed on old mine heaps of abandoned iron ore mines in the Ławęczna area (Holy Cross Mountains, south-central Poland)." Soil Science Annual 69, no. 1 (2018): 28–38. http://dx.doi.org/10.2478/ssa-2018-0004.

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Abstract The article presents the results of preliminary geochemical and mineralogical studies of technogenic soils (Technosols) of abandoned iron ore mines on the Ławęczna Hill near Miedziana Góra in the Holy Cross (Świętokrzyskie) Mountains, southcentral Poland. The results of chemical analyses (XRF) were used to calculate the soil enrichment factors of arsenic, copper, iron, lead and zinc, and compare the element concentrations to their levels in uncontaminated soils across Poland and in the city of Kielce. The highest values of soil enrichment factors of metals (As 27.699, Ni 26.455, Cu 9.

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Sharmila, M., K. Ramanand, and N. Sethunathan. "Effect of yeast extract on the degradation of organophosphorus insecticides by soil enrichment and bacterial cultures." Canadian Journal of Microbiology 35, no. 12 (1989): 1105–10. http://dx.doi.org/10.1139/m89-185.

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Soil enrichment cultures were prepared by repeated additions of methyl parathion to flooded alluvial and laterite soils incubated at 35 °C. These cultures were tested for their ability to degrade methyl parathion in a mineral salts medium in the presence and absence of yeast extract. Addition of yeast extract (0.05% w/v) accelerated the degradation of methyl parathion by both enriched cultures. Methyl parathion was degraded by the enrichment culture from alluvial soil essentially by hydrolysis in the absence of yeast extract and by nitro group reduction in its presence. The enrichment culture

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Perelman, Adi, Naftali Lazarovitch, Jan Vanderborght, and Andreas Pohlmeier. "Quantitative imaging of sodium concentrations in soil-root systems using magnetic resonance imaging (MRI)." Plant and Soil 454, no. 1-2 (2020): 171–85. http://dx.doi.org/10.1007/s11104-020-04628-8.

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Abstract Aims Demonstrating the potential of MRI as a 3D, non-invasive and continuous measurement technique to map Na+ concentration distributions in soil and around roots. Methods Dissolved NaCl in soil and soil-plant systems was mapped by 3D 23Na-MRI. The lower limit of detectability in saturated and unsaturated porous media was evaluated, followed by evaporation experiments to test the quantification. Finally, Na+ enrichment around tomato roots, irrigated with saline solution under low/high transpiration rates (LT, HT), was imaged in parallel to the root system,. Results A spin echo pulse s

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Han, Xiaoli, Qian Luo, Yuhan Chen, et al. "Nitrogen Enrichment Alters Plant Root, Soil Microbial Structure, Diversity, and Function in Mountain Forests of North China." Forests 16, no. 3 (2025): 459. https://doi.org/10.3390/f16030459.

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Nitrogen (N) enrichment significantly impacts temperate forest ecosystems, but we lack a comprehensive understanding of the responses of root morphological characteristics, soil microbial communities, and soil multifunctionality concurrently to varying degrees of N enrichment, particularly when exceeding a threefold localized N input in temperate forests. Therefore, we selected four forest communities in China’s temperate forests and experimented with localized N addition to the dominant tree species in each forest community through the root bag method (three N addition treatments were set up:

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Corstanje, R., and K. R. Reddy. "Microbial Indicators of Nutrient Enrichment." Soil Science Society of America Journal 70, no. 5 (2006): 1652–61. http://dx.doi.org/10.2136/sssaj2004.0070.

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