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3 地累计指数分级标准

Table 3 Distribution of topsoil sampling sites in the core area of the Middle Route of the South-to-North Water Transfer Project

地累计指数Igeo Igeo≤0 0<Igeo≤1 1<Igeo≤2 2<Igeo≤3 3<Igeo≤4 4<Igeo≤5 Igeo>5 级别 0 1 2 3 4 5 6 污染程度 无污染 无-中度污染 中度污染 中度-重度污染 重度污染 重度-严重污染 严重污染