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[1]XU Jing,REN Li-liang,RUAN Xiao-hong.Hydrologic Responses to Spatial Scale in the Area with Different Terrain Complexity[J].Research of Soil and Water Conservation,2010,17(01):35-39.

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Hydrologic Responses to Spatial Scale in the Area with Different Terrain Complexity

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 01 Page number: 35-39 Column: Public date: 2010-02-20

Title:: Hydrologic Responses to Spatial Scale in the Area with Different Terrain Complexity

Author(s):: XU Jing¹, REN Li-liang², RUAN Xiao-hong¹; 1. Department of Hydrosciences, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210093, China;
2. State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China

Keywords:: terrain complexity; TOPMODEL; scale; DEM resolution

CLC:: P333.1

DOI:: -

Abstract:: Because the distributed hydrologic models are always developed based on terrain analysis of DEM,the effect of DEM resolution is remarkable on runoff simulation.The contributing area controlled by Xinning station of ZIshui watershed is selected for study.The terrain complexity index is computed to describe the complexity and variation of true surface.The influence of the interplay of the precipitation and terrain distribution variation on runoff simulation with different DEM resolution is examined.The results show that the effect of DEM resolution is limited by the terrain complexity of the storm centre.The effect of the DEM resolution on runoff simulation is obvious when the terrain of the storm centre is complex and varied remarkably,vice versa.These conclusions are useful for the further research of the hydrologic scale issue.

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