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
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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
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图4. 土壤环境质量综合等级 |
Fig.4. Comprehensive grade map of soil environmental quality |
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