Analysis of Climate Change Impact on the Hydrological Environment in the High and Cold Source Region of the Yangtze River
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Abstract:
As a result of global warming, the meteorological and hydrological elements (temperature, precipitation, evaporation and runoff) and the hydrological environment (glacier, permafrost, snow, wetlands, swamp and vegetation) have been severely impacted in high and cold source region of the Yangtze River. The severe environment problems as permafrost degeneration, vegetation degeneration, freeze-thaw erosion and land desertification have occurred at the region. Through analysis of impact of last 50 years’ climate changes on the meteorological and hydrological elements and the hydrological environment, we point out the current problems urgently to be addressed and suggest future research fields based on science and national demand. And we hope these work can provide some referential experience for improving the ecological barrier construction in source regions of the Yangtze River, the Yellow River, the Minjiang River, the Dadu River and Jialing River, especially for safe water use in the Three Gorges Reservoir area.