新疆天山北坡奎屯河流域径流变化趋势分析

he Kuytun River Basin in Xinjiang as an important agricultural irrigation district, the runoff characteristics in the changes and trends is crucial to the use of water resources.According to the runoff data of the Kuytun River basin,This research analyze the characteristics of the year and the annual runoff and a variety of runoff parameters. The results showed that: runoff and largest runoff and Minimum runoff have a significant increase in the trend,intra-annual differential coefficient,and concentration degree not, but concentration period was significant ahead of schedule. Tt maybe related to the climate changing in Tianshan mountain.The changes of the parameters is very stable for the small coefficient of variation, but there is great changes about the runoff of May in the coefficient of variation, which is due to complex and diverse supplies types in May during the transition period from Dry season to Flood season.So it Have an impact on spring sow and thus meet the water reservoir capacity to a certain extent.