敦煌绿洲地下水微量元素分布特征及其成因

何建华, 秦文华, 郭嘉兵, 陈沛源, 马金珠

The characteristics of groundwater trace elements and its controlling factors in Dunhuang Oasis

Jianhua He, Wenhua Qin, Jiabing Guo, Peiyuan Chen, Jinzhu Ma

表3 主成分荷载和各成分的解释方差

Table 3 Principal component loadings and explained variance for the components

主成分 PC1 PC2 PC3 PC4 pH -0.259 0.863 -0.140 -0.025 Be 0.488 0.716 -0.082 0.247 Sc 0.124 0.719 0.362 0.365 V 0.927 0.118 -0.184 0.033 Cr 0.774 0.195 -0.152 0.082 Co 0.739 0.081 0.393 -0.113 Ni 0.881 -0.224 -0.088 0.185 Cu 0.882 -0.210 -0.252 0.049 Zn 0.814 0.043 -0.058 -0.170 Rb 0.463 0.078 0.301 0.485 Sr 0.841 -0.008 -0.068 -0.331 Ba -0.127 0.031 0.851 -0.265 Mo 0.514 0.213 -0.130 -0.578 U 0.677 -0.224 0.563 -0.139 Pb 0.296 -0.575 0.049 0.538 特征值 6.289 2.361 1.598 1.338 方差贡献率/% 41.924 15.743 10.650 8.922 累积方差贡献率/% 41.924 57.667 68.318 77.240