岷江上游干旱河谷区汶川段风化壳剖面元素地球化学特征

周雪妮, 曹亚廷, 计扬

Element geochemical characteristics of weathering crust profiles of the Wenchuan section in the upper arid valley of the Minjiang River

ZHOU Xue-Ni, CAO Ya-Ting, JI Yang

图4 土壤重金属元素污染指数分布

Fig.4 Soil heavy metal pollution index distribution