乌江上游洪家渡站径流变化规律分析  

Analysis on Runoff Variation Law of Hongjiadu Hydropower Station in Upper Reaches of the Wujiang River

作　　者：李程[1] 畅建霞[1] 孙东永[1] 

机构地区：[1]西安理工大学西北水资源与环境生态教育部重点实验室。陕西西安710048

出　　处：《水电能源科学》2010年第3期9-10,共2页Water Resources and Power

基　　金：国家自然科学基金资助项目(50709027,50679070)

摘　　要：为揭示乌江流域径流演变规律,采用非功率谱分析法分析了径流时间序列的周期性变化规律,应用Mann-Kendall非参数检验法分析了径流序列的趋势特性,并分析了径流年内分配不均匀系数、集中度、集中期及变化幅度等特性。研究结果可为流域水资源开发利用和科学管理提供重要依据。In order to reveal the evolution rules of the runoff in Wujiang River Basin, non-power spectrum method is used to analyze periodicity variation law of runoff time series. Then, the non-parameter Mann Kendall test is adopted to analyze the development tendency of runoff time series. Finally, the runoff properties of annual distribution inhomogeneous factors, concentration ratio, concentration period and amplitude of variation have been calculated. The analysis results will provide important basis for river basin water resources exploitation and scientific management.

关 键 词：乌江流域 径流规律 非功率谱分析 Mann—Kendall检验 年内分配 

分 类 号：TV121[水利工程—水文学及水资源] P333[天文地球—水文科学]