Abstract
The study explored global climate change influence on water resources in Yellow River basin. A HBV hydrological model was developed to simulate the rainfall-runoff relationship at the region. Importing the CCLM climate model data, runoff at Lijin station was obtained in 2000-2039. The results indicate: (1) the annual average runoff depth is 1213mm, runoff in summer is larger than in spring,autumn and winter. The water resources decrease in three months (March, April and Jun) and increase in other months. (2) for inter-annual variations, the water resources increases slightly, and increase trend is about 64.8mm/10a. Water resources are insufficient in 200-2016, and rise gradually from 2017. (3) for different decades, the water resources are lack relatively in 2001-2010 and 2011-2020, and the differences are-59.4mm and-76.0mm respectively. While, the water resources in 2021-2030 and 2031-2039 are abundant, and the differences are 90.6mm and 88.8mm respectively.
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