Analysis of runoff tendency characteristics of Yalong River for past 6 decades
In order to reveal the annual runoff tendency characteristics of Yalong River Basin, we analyzed the annual runoff data of Jinping hydrological station on Yalong River in recent 60 years (1954-2013) by several methods including Mann-Kendall method, cumulative departure curve inspection method , sliding t test and R/S test, and summarized the runoff mutation year and tendency characteristics.In addition, we analyzed the mutation causes by linear regression method.The results show that influenced by the precipitation and underlying surface, the runoff mutation appeared in 1967;the runoff significantly changed around the mutation year and had an increasing trend afterwards.The results can provide important references for the dispatcher to master the hydrological characteristics of Yalong River basin and guiding the united dispatching of the downstream cascade reservoirs.
runofftendency characteristicsJinping hydrological stationYalong River
国家科技期刊平台
NSTL
万方数据
