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2 表层土壤调查样品一级标准物质分析准确度、精密度

Table 2 Accuracy and precision of first grade standard materials in topsoil survey samples

指标 1∶25万多目标区域地球化学调查 1∶5万土地质量地球化学评价 准确度 精密度 合格率 准确度 精密度 合格率 最小值 最大值 最小值 最大值 最小值 最大值 最小值 最大值 As -0.013 0.023 0.007 0.042 100% -0.061 0.086 0.002 0.061 100% Cd -0.045 0.050 0.010 0.076 100% -0.096 0.090 0.003 0.080 100% Cr -0.014 0.014 0.002 0.037 100% -0.062 0.069 0.010 0.048 100% Hg -0.008 0.040 0.006 0.046 100% -0.100 0.098 0.007 0.072 100% Pb -0.015 0.021 0.007 0.043 100% -0.097 0.085 0.009 0.069 100% pH 0.01 0.10 100% 0.01 0.07 100%