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[1]ZHANG Yixin,XU Guoce,LI Zhanbin,et al.Simulation Accuracy of Runoff Erosion Power-Sediment Transfer Model at Different Time Scales[J].Research of Soil and Water Conservation,2020,27(03):1-7，22.

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Simulation Accuracy of Runoff Erosion Power-Sediment Transfer Model at Different Time Scales

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 27 Number of periods: 2020 03 Page number: 1-7，22 Column: 目次 Public date: 2020-04-20

Title:: Simulation Accuracy of Runoff Erosion Power-Sediment Transfer Model at Different Time Scales

Author(s):: ZHANG Yixin¹, XU Guoce¹, LI Zhanbin^1,2, LI Peng¹, JIA Lu¹, WANG Bin¹; (1.State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China; 2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and ministry of Water Resources, Yangling, Shaanxi 712100, China)

Keywords:: Wudinghe basin; soil erosion and sediment yield; runoff erosion power; spatial scale effect

CLC:: S157

DOI:: -

Abstract:: The relationship between runoff and sediment and its simulation prediction at different time scales in the basin is a hotspot in soil erosion research at home and abroad. Based on the theory of runoff erosion power of runoff erosion dynamic process, the runoff erosion power-sediment transfer model is established. The correlation between runoff erosion power and sediment transfer at three different time scales of year, month and individual rainstorm event were studied by selecting runoff and sediment data from the Wudinghe basin, the first tributary of the Yellow River. We compared and analyzed the advantages and disadvantages of the runoff erosion power-sediment transfer model and the runoff-sediment transfer model characterizing runoff erosion and sediment transfer. The results show that runoff, sediment and runoff erosion power in the Wudinghe basin presented the decreasing trend at different time scales from 1975 to 2010. R² of the runoff erosion power-sediment model at different time scales was higher than that of the runoff-sediment model, indicating that the runoff erosion power-sediment transfer model can more accurately characterize the relationship between runoff erosion and sediment transfer on different time scales.

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Last Update: 2020-04-30