生态问题调查中的土壤污染生态风险评价研究  

Evaluation of soil pollution ecological risk

作　　者：钟响 罗林 宋小庆 王万金 ZHONG Xiang;LUO Lin;SONG Xiaoqing;WANG Wanjin(No.111 Geological Team,Bureau of Geology and Mineral Exploration and Development of Guizhou Province,Guiyang 550008,China;Guizhou Geological Engineering Investigation Design and Research Institute,Guiyang 550008,China)

机构地区：[1]贵州省地质矿产勘查开发局111地质大队,贵州贵阳550008 [2]贵州地质工程勘察设计研究院,贵州贵阳550008

出　　处：《贵州科学》2025年第1期66-69,共4页Guizhou Science

基　　金：贵州省地矿局科研项目“乌江源山水林田湖草生命共同体要素关联性分析及保护修复工程研究”(项目编号:黔地矿科合[2020]13号)。

摘　　要：分别采用地累积指数法、潜在生态危险指数法对长江流域乌江源头三岔河流域的土壤重金属指标进行了污染评价,并通过重金属污染元素分布特征结合流域地质背景,对流域生态问题的影响因素进行了识别,认为研究区内土壤重金属污染与区内进行土法炼锌活动有较大关系。通过地累积指数法评价了研究区内土壤重金属污染为:As、Cr、Zn污染程度为无-轻度,Cd、Ni、Pb污染为无-轻度-偏中,Cu、Hg污染程度为无;通过潜在生态危险指数法,评价了研究区内土壤重金属污染的综合潜在生态风险水平为:A、G、H分区综合污染程度中等,其余分区轻微。In this paper,the geo-accumulation index method and potential ecological risk index method were used to evaluate the pollution of heavy metals in the soil of Sancha River Basin at the source of Wujiang River,and the influencing factors of ecological problems in the basin were identified by combining the distribution characteristics of heavy metals with the geological background of the basin.It is concluded that the soil heavy metal pollution in the study area has close relationship with the indigenous zinc smelting activities in the region.The geo-accumulation index method revealed that the pollution degree of As,Cr and Zn in the study area was none to mild,the pollution degree of Cd,Ni and Pb was none to mild to moderate,and the pollution degree of Cu and Hg was none;The potential ecological risk index method showed that the comprehensive potential ecological risk level of soil heavy metal pollution in zone A,G and H was moderate,and that of the other zones was mild.

关 键 词：重金属污染评价 地累积指数法 潜在生态危险指数法 

分 类 号：X4[环境科学与工程—灾害防治]