Effects of anthropogenic and natural environmental factors on the spatial distribution of trace elements in agricultural soils
文献类型：期刊论文
| 作者 | Xu, Yuefeng; Bi, Rutian; Li, Yonghua |
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2023 |
| 卷号 | 249 |
| 关键词 | Heavy metals Selenium Agricultural soils Influencing factors GeoDetector |
| ISSN号 | 0147-6513 |
| DOI | 10.1016/j.ecoenv.2022.114436 |
| 文献子类 | J |
| 英文摘要 | The concentrations of trace elements in agricultural soils directly affect the ecological security and quality of agricultural products. A comprehensive study aimed at quantitatively analyze the effects of anthropogenic and natural environmental factors on the spatial distribution of heavy metals (HMs) and selenium (Se) in agricultural soils in a typical grain producing area of China. Factors considered in this study were parent rock, soil physi-cochemical properties, topography, precipitation, mine activity, and vegetation. Results showed that the median values of Zn, Cd, Cr, and Cu of 111 topsoil samples exceeded the background values of Guangxi province but were lower than the relevant national soil quality standards, and 85% of soil samples were classified as having rich Se levels (0.40-3.0 mg kg-1). The potential ecological risk index of soil heavy metals as a whole was low, with Cd in 9% of the samples posing moderate ecological risk. The concentrations of heavy metals and Se were relatively high in soils from shale rock. Soil properties, mainly Fe2O3 and Mn played a dominant role on soil HMs and Se concentrations. Based on GeoDetector, we found that the interaction effects of two factors on the spatial differentiation of soil HMs and Se were greater than their sum effect. Among the factors, Mn enhanced the explanatory power of the model the most when interacting with other factors for soil Zn; the greatest interactive effect was between distance from mining area and Mn for Cd (q = 0.70); Fe2O3 significantly promoted the spatial differentiation of soil Cr, Cu and Se when interacting with other factors (q > 0.50). These findings contribute to a better understanding of the factors that drive the distribution of HMs and Se in agricultural soils. |
| WOS关键词 | HEAVY-METALS ; RISK-ASSESSMENT ; SELENIUM ; SPECIATION ; ACCUMULATION ; AREA ; BIOAVAILABILITY ; MULTIVARIATE ; TOPOGRAPHY ; POLLUTION |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| WOS记录号 | WOS:000905953900001 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188654]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Institute of Geographic Sciences & Natural Resources Research, CAS 2.Chinese Academy of Sciences 3.Shanxi Agricultural University |
| 推荐引用方式 GB/T 7714 | Xu, Yuefeng,Bi, Rutian,Li, Yonghua. Effects of anthropogenic and natural environmental factors on the spatial distribution of trace elements in agricultural soils[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2023,249. |
| APA | Xu, Yuefeng,Bi, Rutian,&Li, Yonghua.(2023).Effects of anthropogenic and natural environmental factors on the spatial distribution of trace elements in agricultural soils.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,249. |
| MLA | Xu, Yuefeng,et al."Effects of anthropogenic and natural environmental factors on the spatial distribution of trace elements in agricultural soils".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 249(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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