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Abstract：
Due to the special sensitivity of typical ecologically fragile areas, a series of human life, mining, and other activities have a greater impact on the environment. In this study, three coal mines in Ordos City on the Loess Plateau were selected as the study area, and the pollution levels of heavy metals in the area were studied by measuring As, Hg, Cr, Cd, Cu, Ni, and Pb in the soil of 131 sampling points. Combined with the concept of \"co-occurrence network\" in biology, the level of heavy metals in soil was studied using geostatistics and remote sensing databases. The results showed that the concentrations of Hg, Cr, Ni, Cu, and Pb in more than half of the sampling points were higher than the local environmental background value, but did not exceed the risk control value specified by China, indicating that human factors have a greater influence, while Cd and As elements are mainly affected Soil parent material and human factors influence. Heavy metal elements have nothing to do with clay and silt but have an obvious correlation with gravel. Cd, Pb, As and Ni, Cd, Cr are all positively correlated, and different heavy metals are in space The distribution also reflects the autocorrelation, mainly concentrated in the northeast of the TS mining area and the middle of the PS mining area.
摘要：
由于典型生态脆弱区的特殊敏感性,一系列的人类生活，采矿,和其他活动对环境的影响更大。在这项研究中,选取黄土高原鄂尔多斯市的三个煤矿作为研究区,通过测量砷，研究了该地区重金属的污染水平，Hg,Cr,Cd,Cu,Ni,131个采样点的土壤中的Pb。结合生物学中“共现网络”的概念，使用地统计学和遥感数据库研究了土壤中的重金属水平。结果表明,汞的浓度,Cr,Ni,Cu,超过一半的采样点的Pb高于当地环境背景值，但未超过中国规定的风险控制值，表明人为因素有更大的影响，而Cd和As元素主要受土壤母质和人为因素的影响。重金属元素与粘土和粉土无关，但与砾石有明显的相关性。Cd,Pb,As和Ni,Cd,Cr均呈正相关,不同的重金属在空间上的分布也反映了自相关性，主要集中在TS矿区东北部和PS矿区中部。
