生态学杂志2012，Vol.31Issue(7)：1807-1816,10.
粤东沿海典型供水水库沉积物重金属污染特征
Characteristics of heavy metals pollution in sediments of four reservoirs from the east coast of Guangdong Province, South China
摘要
Abstract
To explore the characteristics of sediment heavy metals pollution and its history of four reservoirs in east coast of Guangdong Province, the main heavy metals Cr, Cd, Cu, Zn, Pb, and Hg in the sediments were detected, and the pollution status of surface sediments was evaluated with geo-accumulation index and HSkanson potential ecological risk index, respectively. The possible sources of the heavy metals were also discussed. In the surface sediments of the four reservoirs , the contents of the test heavy metals except Cd all exceeded the Class I values of the China National Standards of Soil Environmental Quality and the highest background values of heavy metals in the global sediments before industrialization, and had great variation between the reservoirs, indicating that the sediments of these reservoirs had been polluted in different degrees. Geo-accumulation index of the four reservoirs showed that the pollution degree of the heavy metals followed the order Pb>Zn>Cd>Cu>Cr>Hg, and Hfikanson potential ecological risk index indicated that the potential ecological risk of the heavy metals followed the order Cd>Hg>Pb>Cu>Zn> Cr, of which, heavy metals Cd and Hg contributed most to the comprehensive ecological risk index (RI). The sediment heavy metals contents had a strong correlation with human activities, and the two assessments all showed that the pollution status of Gongping Reservoir and Chisha Reservoir with stronger human activities were worse than that of Hexi Reservoir and Tangxi Reservoir with less human activities.关键词
粤东沿海/水库/沉积物/重金属/供水安全Key words
east coast of Guangdong/ reservoir/ sediment/ heavy metal: water supply safety.分类
农业科技引用本文复制引用
张华俊,顾继光,胡韧,林国恩,王钊..粤东沿海典型供水水库沉积物重金属污染特征[J].生态学杂志,2012,31(7):1807-1816,10.基金项目
国家自然科学基金重点项目(U0733007)和广东省水利科技创新基金内源污染项目资助. （U0733007）
