张掖盆地1990s表土层深部土壤重金属分布特征及其来源分析
何甘地, 何进忠, 牛洪斌, 张忠平

Distribution and origin of heavy metals in deep topsoil of the Zhangye Basin in the 1990s
HE Gan-Di, HE Jin-Zhong, NIU Hong-Bing, ZHANG Zhong-Ping
图2 H3平均潜在生态风险指数异常处的主成分异常
Fig.2 The princinpal component anomalies around H3 anomaly of average potential ecological risk indexes