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中国西部生态脆弱区地表径流沉积物重金属污染研究

Analysis on Heavy Metal Pollution in Surface Runoff Sediment in Fragile Ecological Areas in Western China
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摘要 中国西部区域生态环境条件较为脆弱,致使其地表径流沉积物重金属污染严重,威胁着中国中部区域、东部区域的生态环境与发展,提出西部生态脆弱区地表径流沉积物重金属污染分析方法研究。分析西部生态脆弱区环境特征,以分析结果为基础,探究地表径流沉积物分布情况,确定重金属负载的粒径效应(Cu、Zu、Pb与Cr容易集中在细粒径沉积物中,而Ni容易集中在中粒径沉积物中),。实验数据显示:提出方法应用后,获得的地表径流沉积物重金属污染负荷估算结果与实际结果保持一致,偏差很小,充分证实提出方法分析性能较佳。 The ecological and environmental conditions in western China are relatively fragile,resulting in serious heavy metal pollution of surface runoff and sediment,which threatens the ecological environment and development of central and eastern China.This paper puts forward the analysis method of heavy metal pollution of surface runoff and sediment in the ecologically fragile areas in western China.Based on the analysis results,the distribution of surface runoff sediments was explored,and the particle size effect of heavy metal load was determined(Cu,Zu,Pb and Cr were easily concentrated in fine particle size sediments,while Ni was easily concentrated in medium particle size sediments).After the application of the proposed method,the estimated heavy metal pollution load of surface runoff sediment is consistent with the actual result.The deviation is small,which proves that the proposed method has good analytical performance.
作者 周乐勋 寇保德 梁坤先 Zhou Lexun;Kou Baode;Liang Kunxian(Qinghai Geological Survey Institute,Xining 810012,China;Key Lab of Geological Processes and Mineral Resources in Northern Qinghai-Tibet Plateau,Xining 810012,China;Qinghai Remote Sensing Big Data Engineering Technology Research Center,Xining 810012,China)
出处 《环境科学与管理》 CAS 2023年第11期63-66,72,共5页 Environmental Science and Management
关键词 生态脆弱区 径流沉积物 重金属污染 西部区域 地表径流 ecological fragile areas runoff sediment heavy metal pollution western region surface runoff
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