摘要
了解岩溶流域枯季径流的变化对维持岩溶生态系统的发展有重要意义。采用线性矩法以年最小7日平均径流量作为枯季径流的统计特征量,通过样本一致性检验、样本相似区检验及区域分布函数识别后,分别采用5种分布函数进行频率分析计算,并以概化的罗枝斯蒂分布(GLO)作为区域统一分布线型,采用指标洪水法对研究区贵州省乌江水系进行枯季径流的区域频率分析。结果表明,GLO分布能取得较好的枯季径流模拟精度。
It is important to understand the change of low water flow in Karst region and this can maintain development of Karst ecological system.Taking annual minimal 7-days average runoff as statistical characteristic variable,linear moments method with five kinds of distribution function is adopted to analyze frequency of low water flow in Karst region by using sample consistency inspection,homogeneity test and identification of regional distribution function.And then taking the generalized GLO distribution as regional distribution linetype,the index flood method is used to analyze the regional frequency of low water flow of Wujiang water system in Guizhou Province.The results show that the simulated precision of low water flow is high with GLO distribution function.
出处
《水电能源科学》
北大核心
2012年第6期24-27,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(41001011
41101018
40930635)
河海大学水文水资源与水利工程科学国家重点实验室自主课题基金资助项目(2009586412)
