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1 三江平原土壤采样点分布
Fig.1 Sampling sketch map of soil sample from Sanjiang Plain