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基于GIS和统计学的土壤监测指标时空变化分析
汪媛媛1(), 华明1, 金洋1, 崔晓丹1, 许伟伟1, 李文博1, 刘玮晶1, 汪子意1, 文宇博2()
An analysis of the temporal and spatial changes in soil monitoring indices based on GIS and statistics
WANG Yuan-Yuan1(), HUA Ming1, JIN Yang1, CUI Xiao-Dan1, XU Wei-Wei1, LI Wen-Bo1, LIU Wei-Jing1, WANG Zi-Yi1, WEN Yu-Bo2()

图7. Cd, Zn和Se元素变化量直方图

Fig.7. Histograms showing the frequency of the changing for Cd, Zn and Se