贵州典型重金属高背景区耕地土壤重金属生态风险评价

王惠艳, 彭敏, 马宏宏, 张富贵

Ecological risk assessment of cultivated land in typical areas with high heavy metal background values in Guizhou Province

WANG Hui-Yan, PENG Min, MA Hong-Hong, ZHANG Fu-Gui

表6 根系土重金属生态风险评价指数统计

Table 6 Ststistics of the ecological risk index for heavy metals in root soil

级别 RI风险点位占比/% Er风险点位占比/% As Cd Cu Pb Zn 轻度 20.35 100 0 91.15 100 100 中度 65.49 0 3.54 8.85 0 0 强度 14.16 0 35.40 0 0 0 很强 0 0 57.22 0 0 0 极强 0 0 3.54 0 0 0