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《全球土壤退化评价》
desert.
Global Assessment of Soil Degradation
(为联合国环境规划署与荷兰国际土壤信息咨询中心合作研究的一项成果,其中《全球人类作用下的土壤退化图》(1 :100万)可提供各大陆的概括性信息)
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