Title: Characteristics of precipitation variation and its effects on runoff in the Yarlung Zangbo River basin during 1961- 2010
Abstract: Based on monthly precipitation data from six meteorological stations and annual runoff data from six hydrometric stations in the Yarlung Zangbo River basin from 1961 to 2010,the changes of precipitation and its influence on runoff were analyzed in this paper. The main results are as follows: the precipitation shows no significant increase in the period,with the rate of 3. 3 mm( 10a)- 1,and 1. 9 mm( 10a)- 1in the dry season and 1.4 mm /10a in the wet season. Precipitation was more in the 1960 s,stable in the 1970 s,the least in the 1980 s,with an increase in the 1990 s and no significant increase in the first ten years of this century. The C V( variation coefficient) of runoff was 0. 15 ~ 0. 40,with a small annual variation and periodic variation. The 1960 s was a relative wet period,followed with a decrease in the 1970 s and a minimum in the 1980 s,then a rise again. A statistical analysis shows that there is a significant correlation between precipitation and runoff,and the change of precipitation is the most important impact factor to the runoff in the Yarlung Zangbo River basin.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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Cited By Count: 23
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