Estimation of soil loss by water erosion in the chinese loess plateau using universal soil loss equation and GRACE

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Abstract

For the estimation of soil loss by erosion in the strongly affected Chinese Loess Plateau we applied the Universal Soil Loss Equation (USLE) using a number of input data sets (monthly precipitation, soil types, digital elevation model, land cover and soil conservation measures). Calculations were performed in ArcGIS and SAGA. The large-scale soil erosion in the Loess Plateau results in a strong non-hydrological mass change. In order to investigate whether the resulting mass change from USLE may be validated by the gravity field satellite mission GRACE (Gravity Recovery and Climate Experiment), we processed different GRACE level-2 products (ITG, GFZ and CSR). The mass variations estimated in the GRACE trend were relatively close to the observed sediment yield data of the Yellow River. However, the soil losses resulting from two USLE parameterizations were comparatively high since USLE does not consider the sediment delivery ratio. Most eroded soil stays in the study area and only a fraction is exported by the Yellow River. Thus, the resultant mass loss appears to be too small to be resolved by GRACE. © The Authors 2013. Published by Oxford University Press on behalf of The Royal Astronomical Society.

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APA

Schnitzer, S., Seitz, F., Eicker, A., G̈untner, A., Wattenbach, M., & Menzel, A. (2013). Estimation of soil loss by water erosion in the chinese loess plateau using universal soil loss equation and GRACE. Geophysical Journal International, 193(3), 1283–1290. https://doi.org/10.1093/gji/ggt023

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