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| Titel |
Climate Change and Its Impact on Water Resources in Yixun River Basin |
| VerfasserIn |
Zhiyong Yang, Yingdong Yu, Xuan Yu, Jianhua Wang |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250031992
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| Zusammenfassung |
| Abstract: In recent decades, the global climate has changed markedly characterized
by the increasing temperature. The water resources and the environment are all
influenced significantly. As one of the most intense river basin and water-short region in
China, the water resource is very sensitive to the climate change. In this paper,
considering the less affected by human activities, the Yixun river is set as the research
region. Based as the literatures of the future climate change in Haihe river, four
climatic change scenarios for the next 50 years is established. A watershed-scale
distributed hydrological model with physical mechanism-Spatial Averaging Watershed
Hydrological Model is applied to simulate the hydrological cycle under the four different
climatic change scenarios, and the influence of water resources in Yixun river is also
analyzed. Under the premise of the precipitation keep stable, when the temperature
raise one centimeter, the amount of yearly runoff will decrease by 5.19% and the
yearly evaporation will increase by 0.58%. When the temperature increase one
centimeter, the precipitation should increase 1.12% to make the amount of water
resources stable. While the temperature is a constant, if the precipitation raise by 1%,
the amount of yearly runoff and evaporation will increase by 3.37% and 0.91%
respectively. The results show that in the scenarios characterized by the increasing
temperature, the amount of water resources depend on the increasing extent of
precipitation. The precipitation should increase 2.3% by 2020 and by 2050 the
range should reach 3.4% to make the amount of water resources steady in Yinxun
river.
Key words: Climate change; Water resources; Spatial Averaging Watershed Hydrological
Model; Yixun river |
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