A Study on Impacts of Climate Change on Runoff of Inland Rivers and Adaptive Water Resource Managements in Hexi Corridor
The runoffs of the Shiyang River,Heihe River and Shule River from 1955 to 2008 were calculated and analyzed in order to understand the impact characteristics of climate change on the runoff of inland rivers.It is found that in the Shiyang River runoff had obviously decreased as a whole,in the Heihe River it had slightly increased and in the Shule River it had significantly increased.There was a decreasing tendency of the three rivers in the 1990s,but it has shifted to increasing in the early 21st century.The impacts of climate change on the three rivers are different.The Shiyang River basin is affected mostly by monsoon climate,where climate is warming,evapotranspiration is increasing and water consumption is increasing too,resulting in decreasing runoff.The basins of Hehei River and Shule River are mainly controlled by westerly,where runoff increasing is basically due to climate warming and precipitation increasing.In order to mitigate the adverse impact of climate change on river basin water resource utilization,an idea of adaptive management of water resources is put forward based on analyzing the impact characteristics of climate change on runoff of the three rivers.It is suggested that:1) scientific management of water resources should be practiced and water use efficiency should be improved; 2) the Qilian Mountain Nature Reserve project construction and the sustainable utilization of water resources should be improved; 3) the model of production should be changed and the structure of plant should be adjusted,and the crop area should be controlled according to the amount of water resource; 4) the cloud water resources in the air should be developed actively,and the Qilian Mountain's glaciers should be nourished.It is believed that these measures and countermeasures are able to provide scientific basis for comprehensive governance,scientific development and utilization of water resources in inland river basin.
runoff of inland riverresponse to climate changebasin water resources managementHexi region
NETL
NSTL
万方数据
维普
