金沙江流域底泥重金属污染特征及来源解析——以蜻蛉河为例
程琰勋, 徐磊, 吴亮, 赵萌生, 王福华, 钱坤, 郑洪福, 李文辉, 张宏辉

Characteristics and source analysis of heavy metal contamination in the sediments of the Jinsha River Basin: A case study of the Qingling River
CHENG Yan-Xun, XU Lei, WU Liang, ZHAO Meng-Sheng, WANG Fu-Hua, QIAN Kun, ZHENG Hong-Fu, LI Wen-Hui, ZHANG Hong-Hui
表2 综合污染指数评价指标
Table 2 Grading criteria of comprehensive pollution index
等级 P 污染程度
≤0.7 清洁
0.7~1 尚清洁
1~2 轻度污染
2~3 中度污染
>3 重度污染