三江平原耕地土壤重金属元素分布特征及影响因素的多元统计分析
宋运红, 杨凤超, 刘凯, 戴慧敏, 许江, 杨泽

A multivariate statistical analysis of the distribution and influencing factors of heavy metal elements in the cultivated land of the Sanjiang Plain
SONG Yun-Hong, YANG Feng-Chao, LIU Kai, DAI Hui-Min, XU Jiang, YANG Ze
图6 三江平原表层土壤重金属元素空间分布
Fig.6 Spatial distribution of heavy metal elements concentrations in the top soil from Sanjiang Plain