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4 表层土壤调查样点元素含量及pH算术平均值统计

Table 4 Arithmetic mean value of element content and pH in topsoil survey samples

数据集 数据量 w(As)/10-6 w(Cd)/10-6 w(Cr)/10-6 w(Hg)/10-6 w(Pb)/10-6 pH WA 189 32.71 0.448 111.50 0.194 35.18 5.97 WB1(全区平均) 6524 37.68 0.439 154.49 0.222 37.49 5.73 WB2(调查配对点1km2) 697 37.51 0.467 156.89 0.221 38.27 5.81 WB3(分析配对点4km2) 189 36.47 0.456 154.31 0.218 37.78 5.82