Acta Geographica Sinica ›› 2004, Vol. 59 ›› Issue (4): 565-573.doi: 10.11821/xb200404010

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Distributed Hydrological Simulation of the Source Regions of the Yellow River under Environmental Changes

LI Daofeng1, TIAN Ying2, LIU Changming1,3   

  1. 1. State Key Joint Laboratory of Environmental Simulation and Pollution Control, Key Laboratory for Water and Sediment Sciences of Ministry of Education, Institute of Water Sciences, Beijing Normal University, Beijing 100875, China;
    2. Department of Civil Engineering, The University of Hong Kong, Hong Kong, China;
    3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2003-11-20 Revised:2004-04-06 Online:2004-07-25 Published:2010-09-09
  • Supported by:

    Major State Basic Research Development Program of China, No.G1999043601

Abstract:

After dividing the source regions of the Yellow River into 38 sub-basins, the paper made use of the distributed hydrologic model--SWAT model to simulate discharge with validation of the measured yearly and monthly runoff data from the Tangnag Hydrologic Station, and simulation results are satisfactory. Five land-cover scenario models and 24 sets of temperature and precipitation combinations were established to simulate annual runoff and runoff depth under different scenarios. The simulation shows that with the increase of vegetation coverage annual runoff increases and evapotranspiration decreases in the basin. When temperature decreases by 2oC and precipitation increases by 2%, basin runoff increases by 39.69%, which is the largest among all scenarios.

Key words: distributed hydrologic model, source regions of the Yellow River, scenario simulation, changing