调查评价的土壤元素累积趋势预测——以广西南宁市西乡塘区为例

王磊, 卓小雄, 吴天生, 凌胜华, 钟晓宇, 赵晓孟

Prediction of the soil element accumulation trends based on 1∶250 000 and 1∶50 000 geochemical surveys and assessments of land quality:A case study of Xixiangtang District, Nanning City, Guangxi zhuang Autonomous Region

WANG Lei, ZHUO Xiao-Xiong, WU Tian-Sheng, LING Sheng-Hua, ZHONG Xiao-Yu, ZHAO Xiao-Meng

表11 农用地土壤环境质量等级划分

Table 11 Grade classification of soil environmental quality of agricultural land

指数 污染物 分级类型 Pi=实测值/风险筛选值 Pj=实测值/风险管控值 i=As、Cd、Cr、Cu、Hg、Pb、Ni、Zn; j =As、Cd、Cr、Hg、Pb pi≤1 优先保护 pi>1,pj≤1 安全利用 pj>1 严格管控