Title: Change Trends of Temperature,Precipitation and Runoff Volume in the Kaxgar River Basin since Recent 50 years
Abstract: This paper analyzes the change trends of temperature and precipitation in the Kaxgar River Basin,alluvial plain and Pamirs and of the annual runoff volume at the debouchure hydrological stations in the river basin using the data observed by 7 meteorological stations and 3 hydrological stations in the Kaxgar River Basin.The results are as follows:(1) The average annual temperature and the seasonal temperatures in winter and autumn have significantly increased since the 1990s,especially in spring since recent 5 years.The annual precipitation in the river basin and Pamirs has considerably increased since the 1990s,and it has significantly increased in the alluvial plain since recent 5 years.The precipitation increase in the Kaxgar River Basin in spring and summer has been significant since the 1990s,and it has been considerable in autumn and winter since recent 5 year.Since recent 5 years,the precipitation over the alluvial plain has increased in spring,autumn and winter,whereas it has increased over the Pamirs mainly in summer and autumn.(2) The annual temperature and precipitation in the Kaxgar River Basin,Pamirs and alluvial plain is in a linear increase trend.The temperature increase over the alluvial plain is the most significant in winter,then in autumn and winter,and the temperature in summer decreases slightly.The average seasonal precipitation increases slightly.The seasonal temperature over the Pamirs increases significantly in summer,autumn and winter,especially in autumn;the seasonal precipitation over the Pamirs is also in a slight increase trend,especially in summer.(3) The total annual runoff volume at 3 hydrological stations in the Kaxgar River Basin has been in a significant linear increase trend since recent 47 years,and the decennary increase rate is 3.0%.However,the trends of annual runoff volume are different from different tributaries of the Kaxgar River,that is the annual runoff volume of the Kez River is in a significant linear increase trend,but that of the Gez River is in a slight decrease trend.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 7
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