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An assessment of the global impact of 21st century land use change on soil erosion

by VINCENZO Bagarello , BALLABIO Cristiano , MONTANARELLA Luca , MODUGNO Sirio , ROBINSON David , PANAGOS Panagiotis , FLEISCHER Larissa , VAN OOST K , BORRELLI Pasquale , SCHUTT Brigitta , LUGATO Emanuele , MEUSBURGER Katrin , FERRO Vito , ALEWELL Christine

in 704/172/4081 / 704/2151/215 / 704/47/4113 / 704/844/685 / Accelerated erosion / Agricultural land / Carbon cycle / Conservation practices / Data processing / Economic conditions / Erosion mechanisms / Erosion rates / Geographic information systems / Human influences / Humanities and Social Sciences / Land use / multidisciplinary / Nutrient cycles / open climate campaign / Remote sensing / Satellite navigation systems / Science / Science (multidisciplinary) / Socioeconomics / Soil conservation / Soil erosion

2017

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2017

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2017

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Publication

An assessment of the global impact of 21st century land use change on soil erosion

VINCENZO Bagarello,

BALLABIO Cristiano,

MONTANARELLA Luca,

MODUGNO Sirio,

ROBINSON David,

PANAGOS Panagiotis,

FLEISCHER Larissa,

VAN OOST K,

BORRELLI Pasquale,

SCHUTT Brigitta,

LUGATO Emanuele,

MEUSBURGER Katrin,

FERRO Vito,

ALEWELL Christine

2017

Overview

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 x 250m) 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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Publisher

NATURE PUBLISHING GROUP,Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio

Subject

/ Accelerated erosion

/ Agricultural land

/ Carbon cycle