全球变化
环境科学
土地利用、土地利用的变化和林业
腐蚀
土地利用
气候变化
土壤碳
水文学(农业)
自然地理学
水土保持
土壤水分
地理
土壤科学
生态学
农业
地质学
海洋学
古生物学
考古
岩土工程
生物
作者
Pasquale Borrelli,David A. Robinson,Larissa R. Fleischer,Emanuele Lugato,Cristiano Ballabio,Christine Alewell,Katrin Meusburger,Sirio Modugno,Brigitta Schütt,Vito Ferro,Vincenzo Bagarello,Kristof Van Oost,Luca Montanarella,Panos Panagos
标识
DOI:10.1038/s41467-017-02142-7
摘要
Abstract Human activity and related land use change are the primary cause of accelerated soil erosion, which has substantial implications for nutrient and carbon cycling, land productivity and in turn, worldwide socio-economic conditions. Here we present an unprecedentedly high resolution (250 × 250 m) global potential soil erosion model, using a combination of remote sensing, GIS modelling and census data. We challenge the previous annual soil erosion reference values as our estimate, of 35.9 Pg yr −1 of soil eroded in 2012, is at least two times lower. Moreover, we estimate the spatial and temporal effects of land use change between 2001 and 2012 and the potential offset of the global application of conservation practices. Our findings indicate a potential overall increase in global soil erosion driven by cropland expansion. The greatest increases are predicted to occur in Sub-Saharan Africa, South America and Southeast Asia. The least developed economies have been found to experience the highest estimates of soil erosion rates.
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