Modeling the spatial relationship between rice cadmium and soil properties at a regional scale considering confounding effects and spatial heterogeneity
文献类型：期刊论文
| 作者 | Yang, Jintao2,3; Wang, Jinfeng2,3; Xu, Chengdong2,3; Liao, Xiaoyong1,2; Tao, Huan1,2 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2022 |
| 卷号 | 287页码:8 |
| 关键词 | Soil-rice system Spatial heterogeneity Confounding factors Local scale Model integration |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2021.132402 |
| 通讯作者 | Wang, Jinfeng(wangjf@lreis.ac.cn) |
| 英文摘要 | Most previous studies have indicated inconsistent relationships between rice cadmium (Cd) and the soil properties of paddy fields at a regional scale under the adverse effects of confounding factors and spatial heterogeneity. In order to reduce these effects, this study integrates Geodetector, a stepwise regression model, and a hierarchical Bayesian method (collectively called GDSH). The GDSH framework is validated in a large typical rice production area in southeastern China. According to the results, significant stratified heterogeneity of the bioaccumulation factor is observed among different subregions and pH strata (q = 0.23, p < 0.01). Additionally, the soil-rice relationships and dominant factors vary by the subregions, and the available soil Cd and pH are found to be the dominant factors in 64% and 50% of subregions, respectively. In the entire region, when the pH < 6, the dominant factors are organic matter and available Cd, and when pH >= 6 they are organic matter, pH, and available Cd. Furthermore, these factors presented different sensitivity to the spatial heterogeneity. The results indicate that, at the subregional level, the GDSH framework can reduce the confounding effects and accurately identify the dominant factors of rice Cd. At the regional level, this model can evaluate the sensitivity of the dominant factors to spatial heterogeneity in a large area. This study provides a new scheme for the complete utilization of regional field survey data, which is conducive to formulating precise pollution control strategies. |
| WOS关键词 | PADDY SOILS ; CD ; DERIVATION |
| 资助项目 | National Natural Science Foundation of China[42071375] ; National Natural Science Foundation of China[71991483] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000704947500006 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167049]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Jinfeng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jintao,Wang, Jinfeng,Xu, Chengdong,et al. Modeling the spatial relationship between rice cadmium and soil properties at a regional scale considering confounding effects and spatial heterogeneity[J]. CHEMOSPHERE,2022,287:8. |
| APA | Yang, Jintao,Wang, Jinfeng,Xu, Chengdong,Liao, Xiaoyong,&Tao, Huan.(2022).Modeling the spatial relationship between rice cadmium and soil properties at a regional scale considering confounding effects and spatial heterogeneity.CHEMOSPHERE,287,8. |
| MLA | Yang, Jintao,et al."Modeling the spatial relationship between rice cadmium and soil properties at a regional scale considering confounding effects and spatial heterogeneity".CHEMOSPHERE 287(2022):8. |
入库方式： OAI收割
来源：地理科学与资源研究所
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