Proceedings - Soil Science Society of America最新文献_第2页

Spatially explicit heteroskedastic modeling for the Soil Health Assessment Protocol and Evaluation version 1.0S 土壤健康评价方案与评价版本1.0S的空间显式异方差模型

Proceedings - Soil Science Society of America Pub Date : 2025-05-04 DOI: 10.1002/saj2.70065

Kristen S. Veum, Paul A. Parker, Scott H. Holan, Namitha V. Pais, Skye A. Wills, Joseph P. Amsili, Márcio R. Nunes, Harold M. van Es, Cathy A. Seybold, Douglas L. Karlen

{"title":"Spatially explicit heteroskedastic modeling for the Soil Health Assessment Protocol and Evaluation version 1.0S","authors":"Kristen S. Veum, Paul A. Parker, Scott H. Holan, Namitha V. Pais, Skye A. Wills, Joseph P. Amsili, Márcio R. Nunes, Harold M. van Es, Cathy A. Seybold, Douglas L. Karlen","doi":"10.1002/saj2.70065","DOIUrl":"https://doi.org/10.1002/saj2.70065","url":null,"abstract":"Greater awareness of the role of soil management in achieving global production goals and mitigating emerging environmental challenges has focused the spotlight on soil health assessment and interpretation. The role of site-specific characteristics in soil health assessment has long been recognized through small-scale experimental studies, and the soil health assessment protocol and evaluation (SHAPE) tool was developed to facilitate cross-site comparisons and provide regionally relevant interpretation by accounting for site-specific factors. Specifically, SHAPE version 1.0 was developed to account for primary climate-edaphic factors including long-term climate means (temperature and precipitation) and edaphic characteristics (soil texture and soil suborder). Version 1.0S of SHAPE further incorporates a spatially explicit, heteroskedastic approach into the Bayesian linear regression model to refine peer-group scoring curves and benchmark values based on proximity. This approach captures regional variability in soil characteristics and improves the relevance and interpretability of the SHAPE scores and benchmark values.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanistic insights into the role of biochar C:N ratios in modulating greenhouse gas emissions and soil organic carbon fractions in contrasting soil types 生物炭碳氮比在不同土壤类型中调节温室气体排放和土壤有机碳组分作用的机理研究

Proceedings - Soil Science Society of America Pub Date : 2025-05-04 DOI: 10.1002/saj2.70068

Muhammad Tauseef Jaffar, Wenqian Chang, Muhammad Ahmed, Ruoxuan Shi, Qingzhu Liu, Nicholas Girkin, Yi Cao, Wei Jiang, Xiong Li, Jianguo Zhang

{"title":"Mechanistic insights into the role of biochar C:N ratios in modulating greenhouse gas emissions and soil organic carbon fractions in contrasting soil types","authors":"Muhammad Tauseef Jaffar, Wenqian Chang, Muhammad Ahmed, Ruoxuan Shi, Qingzhu Liu, Nicholas Girkin, Yi Cao, Wei Jiang, Xiong Li, Jianguo Zhang","doi":"10.1002/saj2.70068","DOIUrl":"https://doi.org/10.1002/saj2.70068","url":null,"abstract":"Role of varying C:N ratios of biochar to enhance soil health and impacts across soil types remain inadequately understood. Therefore, this study aimed to elucidate the mechanisms of change in soil organic carbon (SOC) fractions and greenhouse gas (GHG) emissions under nitrogen-enriched biochar (NB) application in sandy soil and loamy soil. A control (CK; without biochar) and four biochar types, including one pristine biochar (PB) and three types of NB (NB1, NB2, and NB3), were applied at two rates (20 t ha−1 [L1] and 40 t ha−1 [L2]). Biochar types and application levels significantly influenced CH₄ and CO₂ emissions. NB effectively reduced CH₄ while increased CO₂ emissions in both soil types. NB enhanced the SOC pools, which is primarily attributed to increased mineral-associated and particulate SOC in both sandy and loamy soils. β-glucosidase, cellobiohydrolase, and β-xylosidase were significantly enhanced by NB, particularly at a higher application rate of biochar (L2) compared to CK, with more pronounced increases in loamy soil. Structural equation modeling showed that biochar types and application levels significantly influenced CH₄ and CO₂ emissions and SOC. The results provide valuable insights for guiding biochar applications aimed at reducing CO₂ and CH₄ emissions while improving soil fertility, with potential benefits for diverse agroecosystems and farming communities worldwide.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of fertilizer rate on yield-scaled nitrous oxide emissions from two soil types 施肥量对两种土壤类型氮氧化物排放量的影响

Proceedings - Soil Science Society of America Pub Date : 2025-05-02 DOI: 10.1002/saj2.70070

Kosoluchukwu C. Ekwunife, Chandra A. Madramootoo

{"title":"Effects of fertilizer rate on yield-scaled nitrous oxide emissions from two soil types","authors":"Kosoluchukwu C. Ekwunife, Chandra A. Madramootoo","doi":"10.1002/saj2.70070","DOIUrl":"https://doi.org/10.1002/saj2.70070","url":null,"abstract":"Synthetic N fertilizer application has increased crop yields to meet the growing food demand, but it has also contributed to greater N2O emissions from cultivated fields. Best management practices, including the 4Rs (right source, right rate, right time, and right place) of nutrient management, have been proposed to mitigate these emissions; however, there have been inconsistent results regarding the impact of soil texture on yield-scaled N2O emissions. To clarify this issue, a field study was undertaken to evaluate the influence of three nitrogen fertilization rates (140, 180, and 220 kg N ha−1) on N2O emissions and grain corn (Zea mays L.) yield from sandy loam and silty clay soil field sites situated in southwestern Quebec, Canada. Crop nitrogen uptake and yields were greater on the sandy loam than on the silty clay. Grain yields increased with N fertilization rate. Cumulative N2O emissions from the sandy loam soil were up to threefold greater than those from the silty clay soil due to soil and weather conditions during fertilizer application. No significant differences were found in the N2O fluxes among the N rate treatments in either soil. Assessing results from five other studies, we found that under corn production, overall yield-scaled emissions from poorly drained soils were fivefold greater than well-drained (coarse- and medium-textured) soils. However, yield-scaled emissions vary more widely in poorly drained soils, showing both lower and higher values than in well-drained soils. These results demonstrate the need to consider soil textural differences and the impacts of climate variability on emissions when recommending fertilizer rates to reduce N2O emissions.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using a Rock-Eval device for thermal oxidative analysis of calcareous soils with low organic carbon content: A technical note 使用岩石评估装置对有机碳含量低的钙质土壤进行热氧化分析：技术说明

Proceedings - Soil Science Society of America Pub Date : 2025-05-01 DOI: 10.1002/saj2.70067

Oscar Pascal Malou, David Sebag, Olivier Taugourdeau, Herman Ravelojaona, Melissa Tellez, Jérôme Nespoulous, Stephane Boivin, Marc Ducosso, Kenji Maurice, Marie-Liesse Aubertin, Hassan Boukcim, Maira Alves-Fortunato

{"title":"Using a Rock-Eval device for thermal oxidative analysis of calcareous soils with low organic carbon content: A technical note","authors":"Oscar Pascal Malou, David Sebag, Olivier Taugourdeau, Herman Ravelojaona, Melissa Tellez, Jérôme Nespoulous, Stephane Boivin, Marc Ducosso, Kenji Maurice, Marie-Liesse Aubertin, Hassan Boukcim, Maira Alves-Fortunato","doi":"10.1002/saj2.70067","DOIUrl":"https://doi.org/10.1002/saj2.70067","url":null,"abstract":"Quantifying soil organic and inorganic carbon with a high degree of accuracy is an area of growing scientific interest. There are many methods available for quantifying soil organic carbon (SOC) and soil inorganic carbon (SIC), either separately or simultaneously. Some of these methods present limitations and uncertainties for the quantification of these two forms of soil carbon, particularly in calcareous soils with low SOC contents. Rock-Eval (RE) thermal analysis, which emerged as a major tool in soil science over the last few decades, has its advantages over other analytical methods, but it also has its limitations, particularly for studying soils with low SOC contents. Here, we propose a new thermal oxidative method with the REdevice to quantify low levels of SOC in calcareous soils: Oxypure. We analyzed soils using both the standard protocol of RE thermal analysis (RE650) and dry combustion using an elemental analyzer (EA) and compared them with the Oxypure method. Our results show that the RE650 protocol is inadequate for studying calcareous soils with low SOC content. Compared to the reference method EA, the Oxypure method is more suitable for quantifying SIC and SOC in calcareous soils with low SOC contents. This study also shows that SOC can be characterized from a combined C–CO2 thermogram obtained using the Oxypure method. Overall, this study has demonstrated that the Oxypure method is more suitable than the RE650 protocol for studying calcareous soils with low SOC content, and we strongly recommend this method for these particular soils.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70067","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Weed encroachment affects soil organic carbon stock in bermudagrass pastures 杂草入侵对百慕大草草场土壤有机碳储量的影响

Proceedings - Soil Science Society of America Pub Date : 2025-04-25 DOI: 10.1002/saj2.70066

Igor L. Bretas, Jose C. B. Dubeux Jr., Luana M. D. Queiroz, Courtland Kelly, Scott Flynn, Sam Ingram, Martin Ruiz-Moreno, Mario A. Lira Junior, Beatriz E. Bizzuti, Kenneth T. Oduor, Flavia F. Simili, Javier P. Acuña, Kevin R. Trumpp, Cristian T. E. Mendes, Marilia A. Bernardini

{"title":"Weed encroachment affects soil organic carbon stock in bermudagrass pastures","authors":"Igor L. Bretas, Jose C. B. Dubeux Jr., Luana M. D. Queiroz, Courtland Kelly, Scott Flynn, Sam Ingram, Martin Ruiz-Moreno, Mario A. Lira Junior, Beatriz E. Bizzuti, Kenneth T. Oduor, Flavia F. Simili, Javier P. Acuña, Kevin R. Trumpp, Cristian T. E. Mendes, Marilia A. Bernardini","doi":"10.1002/saj2.70066","DOIUrl":"https://doi.org/10.1002/saj2.70066","url":null,"abstract":"Weed encroachment indicates pasture degradation and is a major challenge for adequate pasture management. Additionally, it might compromise the soil organic carbon (SOC) stock, affecting global climate change. Common bermudagrass [Cynodon dactylon (L.) Pers.] is a worldwide grown forage species, but broadleaf weed species often encroach during the warm season without appropriate weed management. Spiny pigweed (Amaranthus spinosus L.) is one of the widely encountered weeds in pastures across the globe. We quantified the SOC in bermudagrass pastures encroached with different levels of spiny pigweed after 3 years. Different methods (fixed depth vs. equivalent soil mass [ESM] approaches) were evaluated for SOC estimates. The treatments were paddocks free of weeds (weed-free), paddocks with weeds established in alternated strips (weed-strips), and paddocks with weeds spread throughout the whole area (weed-infested) in a randomized complete block design with four replicates. Bermudagrass herbage accumulation rate (HAR) and belowground responses were evaluated as explanatory variables. Spiny pigweed encroachment reduced the bermudagrass HAR and belowground biomass accumulation. The fixed depth method overestimated the SOC in the topsoil layer, while differences between ESM approaches were negligible. The SOC concentration was greater in weed-free than weed-infested areas. The cumulative SOC stock (0–15 cm) estimated on an ESM basis was 15% lower in weed-infested pastures (33.6 Mg ha−1) compared to weed-free or weed-strips (39.5 Mg ha−1). Spiny pigweed encroachment in bermudagrass pastures significantly impacts the soil in the short term, leading to lower SOC stocks compared to weed-free pastures.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Newly established prairie strips intermittently increase soil carbon beneath the strip, but not in surrounding cropland 新建立的草原带状会间歇性地增加带状下的土壤碳，但不会增加周围农田的土壤碳

Proceedings - Soil Science Society of America Pub Date : 2025-04-25 DOI: 10.1002/saj2.70056

Corinn E. Rutkoski, Sarah E. Evans

{"title":"Newly established prairie strips intermittently increase soil carbon beneath the strip, but not in surrounding cropland","authors":"Corinn E. Rutkoski, Sarah E. Evans","doi":"10.1002/saj2.70056","DOIUrl":"https://doi.org/10.1002/saj2.70056","url":null,"abstract":"Prairie strips, zones of agricultural land converted to perennial vegetation, have the potential to sequester soil carbon and improve soil health. In this study, we introduced prairie strips to two cropping systems that had been maintained with cover crops and reduced chemical inputs for the previous 30 years. We evaluated soil carbon within newly established prairie strips and in adjacent cropland, measuring microbial biomass carbon (MBC), permanganate oxidizable carbon (POXC), and mineralizable carbon (MinC) in each of the first 3 years of prairie strip establishment. We also measured C stocks in particulate organic matter (POM) and mineral-associated organic matter (MAOM) fractions 3 years after prairie strip planting. We found prairie strip effects on soil C depended on the form of C measured, and the year (which included different crops and management activities). Prairie strips showed higher soil MBC and MinC than cropland during corn and wheat years, but not during a soybean year, and did not alter C in POM or MAOM fractions after 3 years. We also found no evidence that prairie strips increased soil C in adjacent cropland soils. Within each year, soil MBC and MinC responded to management practices that occurred shortly before sampling in prairie strips and cropland, suggesting that these measurements may be most appropriate for tracking short-term (weeks) responses of soil C. Overall, we find that prairie strips generally have a positive impact on fast-cycling soil C during early establishment in multiple cropping systems, but effects are highly dependent on annual and intraannual management and the specific form of C being measured.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Defining soil science: Balancing fundamental research and societal needs 定义土壤科学：平衡基础研究和社会需求

Proceedings - Soil Science Society of America Pub Date : 2025-04-23 DOI: 10.1002/saj2.70059

Teamrat Afewerki Ghezzehei, Asmeret Asefaw Berhe

引用次数: 0

Soil change after planting longleaf pine on agricultural lands: Revisiting a chronosequence study after 23 years 在农业用地种植长叶松后的土壤变化：回顾23年后的时间顺序研究

Proceedings - Soil Science Society of America Pub Date : 2025-04-23 DOI: 10.1002/saj2.70062

Joshua J. Puhlick, Daniel Markewitz, R. Scott Taylor

{"title":"Soil change after planting longleaf pine on agricultural lands: Revisiting a chronosequence study after 23 years","authors":"Joshua J. Puhlick, Daniel Markewitz, R. Scott Taylor","doi":"10.1002/saj2.70062","DOIUrl":"https://doi.org/10.1002/saj2.70062","url":null,"abstract":"Efforts to restore longleaf pine (Pinus palustris Mill.) have led to millions of hectares of longleaf pine being established across the southern United States. On lands planted to longleaf pine that were formerly subjected to row cropping, few studies have tracked changes in soil carbon (C) and nutrient stocks over time. We repeated measurements of mineral soil total C, total nitrogen (N), and extractable phosphorus (P) on a chronosequence of replicated (n = 3) planted longleaf pine stands of various age classes. From the surface of the mineral soil to a depth of 50 cm, C accumulation from 1999 to 2022 was 2.8 ± 10.4 (mean ± standard deviation) Mg ha−1. Soil N generally tracked changes in C. This included a pattern of C and N accumulation in the shallow mineral soil horizon (0–10 cm) of planted stands, but at depth, C and N showed a decline. Meanwhile, mean extractable P declined since agricultural fertilizers were last applied to the soils of the planted stands about 24–37 years ago, but remained elevated in comparison to naturally regenerated stands. Pairwise comparisons indicated that 30-year-old plantations had similar mineral soil C stocks to those of naturally regenerated stands. The soils of planted stands were generally C sinks despite use of frequent prescribed fire and commercial thinning. Overall, our findings suggest that planting longleaf pine on marginal agricultural lands can contribute to the objective of restoring the low native fertility of these soils and sequestering belowground C in stands.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to “Evaluation of tissue phosphorus concentrations as diagnostic tool for phosphorus nutrition in corn” 对“评价组织磷浓度作为玉米磷营养诊断工具”的修正

Proceedings - Soil Science Society of America Pub Date : 2025-04-23 DOI: 10.1002/saj2.70069

{"title":"Correction to “Evaluation of tissue phosphorus concentrations as diagnostic tool for phosphorus nutrition in corn”","authors":"","doi":"10.1002/saj2.70069","DOIUrl":"https://doi.org/10.1002/saj2.70069","url":null,"abstract":"Roa, G. A., & Ruiz Diaz, D. A. (2025). Evaluation of tissue phosphorus concentrations as diagnostic tool for phosphorus nutrition in corn. Soil Science Society of America Journal, 89, e70031. https://doi.org/10.1002/saj2.70031Description of errors:The reference, Mills et al. (1996) was cited incorrectly in the text and the references list. The in-text citations should read, “Mills & Jones, 1996,” and the reference should be:Mills, H. A., & Jones, J. B. (1996). Plant analysis handbook II: A practical sampling, preparation, analysis, and interpretation guide. Micro-Macro Publishing.The reference, “Mallarino, A., & Sawyer, J. (2019). Tissue testing for field crops requires cautious use and interpretation. Integrated Crop Management—Iowa State University. https://crops.extension.iastate.edu/cropnews/2019/06/tissue-testing-field-crops-requires-cautious-use-and-interpretation” should not be included, and all in-text citations should be corrected to Mallarino & Sawyer, 2018.In the Abbreviations list, the term “NDVI, normalized difference vegetation index” was omitted and should be included.These corrections listed above have been made on the article.We apologize for these errors.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Speciation and bioavailability of metals in soil under different land use from a coal mine area in Bijie, southwest of China 毕节矿区不同土地利用方式下土壤金属形态及生物有效性研究

Proceedings - Soil Science Society of America Pub Date : 2025-04-22 DOI: 10.1002/saj2.70058

Qinghe Wang, Zhengyuan Liang, Shenwen Cai, Boping Zeng

{"title":"Speciation and bioavailability of metals in soil under different land use from a coal mine area in Bijie, southwest of China","authors":"Qinghe Wang, Zhengyuan Liang, Shenwen Cai, Boping Zeng","doi":"10.1002/saj2.70058","DOIUrl":"https://doi.org/10.1002/saj2.70058","url":null,"abstract":"In different land types near coal mining areas, the migration and speciation of heavy metals may have different characteristics, and the impact on the ecological environment and human health is also different. In order to further explore this difference, total amount and speciation of six heavy metals (Cd, As, Cu, Zn, Pb, and Ni) in soil samples from the agricultural land, forest land, wasteland, and coal mine land were analyzed. The results indicated that (1) the heavy metals Cd, Cu, and Pb are higher than the background values of Guizhou Province, and the content of heavy metals in mining area is higher than other land use types. (2) Heavy metals As, Ni, and Zn exist mainly in residual state, while Cd, Cu, and Pb exist mainly in non-residual state. (3) The results of the bioavailability test indicate that Cd had the highest bioavailability and certain risks to the human body. The potential ecological risk assessment results suggested that Cd was at medium ecological risk, while other heavy metals were at low risk. (4) The health risk assessment results based on bioavailability indicated that the noncarcinogenic risk in the study area was less than 1, with low-risk level and certain carcinogenic risk. However, within the acceptable range, the health risk assessment results corrected by bioavailability were less than the evaluation results based on the total amount of heavy metals. Heavy metals cannot be completely absorbed by the human body, so it is more meaningful to use bioavailability for health risk assessment.","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0