摘要
根据金沙江流域8个控制站的径流资料,分析了流域径流的年内分配特性、年际变化特征、径流的趋势性、突变性和周期性。研究表明,金沙江流域水量充沛,径流年内分配不均匀,年际变化较小,但存在连丰、连枯期;在过去的50年内,年径流呈不显著的增加趋势,1966年和1997年径流发生突变,存在3~5年、9年、17年的周期变化。
Based on the data of runoff from eight stations in Jinsha River,the distribution and annual variation and the tendency,mutation and periodicity of runoff was analyzed by the stochastic hydrology method.The result showed that the Jinsha River had abundant water with distribute unevenly during year,annual variation small and continued high-water season and dry season obviously.Besides,the annual runoff showed an indistinctive increasing trend with the period of 3 to 5 years,9 years,17-year,and the mutations points in 1966 and 1997 in the past 50 years.
出处
《高原山地气象研究》
2010年第2期26-30,共5页
Plateau and Mountain Meteorology Research
基金
中国气象局气候变化专项"气候变化对金沙江流域径流水资源的影响"(CCFS-09-19)
南京水利科学研究院基本科研业务费专项"河川径流变化归因分析关键技术研究"
关键词
金沙江流域
年径流
变化特性
Jinsha river
annual runoff
variation characteristics
