北京平原区土壤地球化学特征及影响因素分析

李欢, 黄勇, 张沁瑞, 贾三满, 徐国志, 冶北北, 韩冰

Soil geochemical characteristics and influencing factors in Beijing Plain

LI Huan, HUANG Yong, ZHANG Qin-Rui, JIA San-Man, XU Guo-Zhi, YE Bei-Bei, HAN Bing

图3 北京平原区土壤元素均值与全国土壤背景值的比值结果

Fig.3 The results of the ratio of the mean value of soil elements in the Beijing Plain to the national soil background value