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5 底泥重金属含量的主成分分析
Table 5 Principal component analysis of heavy metals concentrations in the sediments
重金属元素 主成分 变量共同度
F1 F2
As 0.890 0.019 0.792
Cd 0.885 -0.371 0.921
Cr 0.329 0.911 0.938
Cu 0.945 -0.033 0.894
Hg 0.702 0.009 0.493
Ni 0.682 0.634 0.868
Pb 0.881 -0.273 0.851
Zn 0.922 -0.168 0.878
初始特征值 5.161 1.475
方差贡献率/% 64.507 18.432
累积方差贡献率/% 64.507 82.939