Effects of snow-depth change on spring runoff in cryosphere areas of China |
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| Authors: | Xiaojiao Liu Junfeng Liu Xiqiang Wang Baogui Zhang Chuntan Han |
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| Affiliation: | 1. Qilian Alpine Ecology and Hydrology Research Station, Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China;2. University of Chinese Academy of Sciences, Beijing, China;3. Institute of Geographical Science, Taiyuan Normal University, Jinzhong, China |
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| Abstract: | Based on snow-depth and measured runoff data in the 19 river basins of the cryosphere areas of China, changes in cold season snow depth (CSSD) and spring runoff, and the relationship between CSSD and spring runoff were analysed. Decreasing trends in CSSD were detected mainly in the plains (plateaus), while increasing trends were found mainly in the mountainous regions. Different combinations of precipitation and temperature may be responsible for these results. The response of spring runoff to CSSD change varied greatly under climate warming. The runoff in April and May was commonly affected by CSSD, while the runoff in March was less affected by CSSD, but more by the increasing temperature causing more snowmelt in March. Due to relatively greater snow accumulation in spring, the runoff during spring was less affected by CSSD in the southern Tienshan Mountains. |
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| Keywords: | cryosphere areas of China snow depth spring runoff climate change correlation analysis |
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