柳江流域沉积物重金属生态风险评价及来源分析

钟晓宇, 吴天生, 李杰, 郑国东, 卓小雄, 关东超, 王磊, 莫斌吉

Ecological risk assessment and source analysis of heavy metals in sediments of Liujiang River Catchment

Xiao-Yu ZHONG, Tian-Sheng WU, Jie LI, Guo-Dong ZHEN, Xiao-Xiong ZHUO, Dong-Chao GUAN, Lei WANG, Bing-Ji MO

表1 地累计指数与污染程度分级

Table 1 The relation between the Igeo and excessed standard of heavy metal

污染程度 无 轻度 偏中度 中度 偏重度 重度 严重 Igeo ≤0 0~1 1~2 2~3 3~4 4~5 >5 级别 0 1 2 3 4 5 6