Based on the data of precipitation and air temperature from weather stations in the source regions of the Yellow River and data of runoff from Madoi,Darlag,Maqu,Tangnag and Lanzhou hydrologic stations,the changes of precipitation,air temperature and runoff during the past several decades are investigated.Meanwhile,changes in land use patterns and their reasons in these regions are studied.It is revealed that an obvious increase in air temperature and decrease in precipitation and runoff in these regions.Changes in land use indicate that the wetland is affected by human activity and climate change.The change is resulted from the combinations of nature factors and human activity.Thus the eco-environment in the source regions of the Yellow River will deteriorate further.Artificial intervention is needed to protect and to improve the eco-environment in the source regions of the Yellow River.
source regions of the Yellow Rivereco-environmenthydrology and water resourcesclimate change
NETL
NSTL
维普
万方数据
