Hydrological Response to Climate Change in the Weihe River Basin
Climate changes may have significantly affected the runoff and sediment load in the Wei River Basin (WRB)since the 1970s. In this study, a coupling system of HadCM3 GCM (General Circulation Models) and SWAT ( Soil and Water Analysis Tool) model is developed to evaluate the hydrological response to climate change in the WRB, and the changing trends of water resources in future periods of 2010s, 2020s, 2030s, and 2050s are projected on the basis of HadCM3 GCM with emission scenario of B2.Results indicate that the spatial distributions of daily maximuM temperature (Tmax), minimum temperature (Tmin) and precipitation (Precip) show an apparent change in the 2020s, 2050s and 2080s. It shows that Tmax will increase by 1.18, 2.32 and3.45℃, respectively, and 1.20, 2.39 and 3.54 ℃ for Tmin. Precip will decrease 23.23, 17.92 and 21.23 mm, respectively. a comparison between the simulation of status quo and hydrological response projection in future periods using the coupled system shows that mean annual runoff will continue decreasing in the 2010s and 2020s. It will give a little increase in the 2030s and 2050s. The results achieved in this study can be as a reference for water resources management to local water authorities.
climate change hydrological response Wei River statistical downscaling
Cheng Lei Xu Zongxue Liu Zhaofei Yao Wenyi
Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Bei Key Laboratory of Water and ediment Sciences, Ministry of Education, College of Water Sciences, Beij Yellow River Institute of Hydraulic Research, Zhengzhou, 45003, China
国际会议
郑州
英文
221-230
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）