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[1]ZHAO Chuanchuan,GAO Ruime,ZHANG Qingqing.Simulation and Evaluation of the Hydrologic Process Based on AnnAGNPS Model in Luolicun Subwatershed[J].Research of Soil and Water Conservation,2017,24(02):137-141.

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Simulation and Evaluation of the Hydrologic Process Based on AnnAGNPS Model in Luolicun Subwatershed

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 02 Page number: 137-141 Column: Public date: 2017-04-28

Title:: Simulation and Evaluation of the Hydrologic Process Based on AnnAGNPS Model in Luolicun Subwatershed

Author(s):: ZHAO Chuanchuan, GAO Ruime, ZHANG Qingqing; College of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China

Keywords:: AnnAGNPS; runoff simulation; daily scale; Luolicun subwatershed

CLC:: S157;P333

DOI:: -

Abstract:: Distributed hydrological model has become effective approach to simulate hydrologic process and soil erosion. The Luolicun subwatershed was located in the upper reaches of Bahe River in the northwest of China, and was selected as study area. Based on the daily meteorological hydrological data, topography, soil and land use data, the Annualized Agricultural Non-point Source Pollution model (AnnAGNPS) database was built. The best cell was analyzed, and the yearly-monthly-daily runoff of Luolicun subwatershed was simulated. The results showed that:(1) when the critical source area and minimum source channel length were 100 hm² and 70 m, respectively, the subwatershed was divided into 1030 cells and 420 gullies, and the model can well describe the underlying surface in the watershed; (2) AnnAGNPS model can simulate the runoff process in the study area. The relative error of runoff is less than 10% (Ens=0.51,R²=0.55).

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