Soil heavy metal pollution and ecological risk assessment in Panzhihua reach of Jinsha River

摘要：
为清晰了解金沙江攀枝花河段土壤重金属污染状况,以丰、平、枯不同水期下金沙江攀枝花河段岸边土壤为研究对象,采用单因子污染指数法、内梅罗综合污染指数法以及潜在生态风险指数法对金沙江攀枝花河段土壤重金属污染状况以及可能存在的生态风险进行评价,并提出了相关风险管控建议.研究结果表明,丰、平、枯不同水期下V,Cd,Cu,Ni等重金属质量含量均值超过四川省表层土壤背景值;丰水期与枯水期下重金属内梅罗综合污染指数均值分别为3.10,3.14,综合污染等级达到Ⅴ级重度污染,平水期下重金属内梅罗综合污染指数均值为2.94,综合污染等级达到Ⅳ级中度污染,土壤中Cd,V污染值得进一步关注;丰、平、枯不同水期下金沙江攀枝花河段岸边土壤重金属的潜在生态风险系数均值分别为144.04,110.88和147.15,总体呈现轻微生态风险,重金属Cd存在的危害较为严重,潜在生态风险指数分别为103.92,84.81和111.71,呈现强生态风险,Cd存在的生态风险值得进一步去关注.

To clearly understand the heavy metals pollution of the soil in the Panzhihua reach of the Jinsha River,the bank soil of which in wet,normal and dry periods were taken as the research objects.In addition,the single-factor pollution index method,the Nemerow comprehensive pollution index method,and the potential ecological risk index method were used to evaluate the pollution state of soil heavy metals and possible ecological risk in the Panzhihua reach of the Jinsha River.Apart from that,relevant risk management and control recommendations are put forward.The results show that the average content of heavy metals such as V,Cd,Cu,Ni in different periods of wet,normal and dry water levels exceed the background value of the surface soil in Sichuan Province;the mean values of the heavy metals Nemerow comprehensive pollution index in the wet and dry seasons are 3.10 and 3.14,respectively,the comprehensive pollution level reaches levelⅤheavy pollution,the average value of the heavy metal Nemerow comprehensive pollution index in the normal water period is 2.94,the comprehensive pollution level reaches levelⅣmoderate pollution,Cd and V pollution in soil deserve further attention;the average values of the potential ecological risk coefficients of heavy metals in the bank soil of the Panzhihua reach of the Jinsha River in wet,normal,and dry periods are 144.04,110.88,and 147.15,respectively,showing a slight ecological risk in general,the harm of heavy metal Cd is more serious,and the potential indexes of ecological risk are 103.92,84.81 and 111.71,respectively,presenting strong ecological risk,the ecological risk of Cd deserves further attention.

作者：
史鹏 朱长军 王世岩 樊皓 吴比 刘畅 李步东

Shi Peng;Zhu Changjun;Wang Shiyan;Fan Hao;Wu Bi;Liu Chang;Li Budong(School of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hehai University,Nanjing 210009,China;Yangtze River Water Resources Protection Research Institute,Wuhan 430051,China)

机构地区：
河北工程大学能源与环境工程学院 中国水利水电科学研究院 河海大学水文水资源与水利工程科学国家重点实验室 长江水资源保护科学研究所

出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2022年第4期91-100,共10页

Journal of Henan Normal University(Natural Science Edition)

基金：
国家自然科学基金(91647212,51679256) 河海大学水文水资源与水利工程科学国家重点实验室资助项目(2019490911) 中国水利水电科学研究院科技项目(WE0163A052018,WE0145B012021) 广西水工程材料与结构重点实验室资助项目(GXHRI-WEMS-2020-13) 中国三峡建设管理有限公司科研资助项目(JG/18011B)。

关键词：
土壤 重金属污染 污染评价 生态风险

soil heavy metal pollution pollution assessment ecological risk

分类号：
X53 [环境科学与工程—环境工程]

金沙江攀枝花河段土壤重金属污染状况及生态风险评价.pdf