南水北调中线核心水源区土壤氟空间变异特征与污染风险评价
谭力, 王占岐, 薛志斌, 杨斌

Spatial variability and pollution risk assessment of soil fluorine in the core area of the Middle Route of the South-to-North Water Transfer Project
TAN Li, WANG Zhanqi, XUE Zhibin, YANG Bin
表4 土壤氟潜在生态风险评估指标与分级标准
Table 4 Evaluation index and grading standard of potential ecological risk of soil fluorine
潜在生态风险指数Ei Ei<1 1≤Ei<2 2≤Ei<4 4≤Ei<8 Ei≥8
风险程度 A(低) B(中等) C(高) D(很高) E(极高)