北京东南郊土壤重金属元素分布及其在表层土壤中的富集特征
张沁瑞, 李欢, 邓宇飞, 黄勇, 张博, 许一波

Distribution of heavy metal elements in soil of the Southeastern suburbs of Beijing and their enrichment characteristics in surface soil
ZHANG Qin-Rui, LI Huan, DENG Yu-Fei, HUANG Yong, ZHANG Bo, XU Yi-bo
图5 表层土壤重金属元素显著富集区域划分
Fig.5 The division of areas with significant enrichment of heavy metal elements in surface soil