新村流域径流变异诊断及其影响因素定量分析  

Diagnose and Analysis of Variation and Its Inflect Factors in XincunWatershed

作　　者：赵天力 雷德义[2] 胡彩虹[2] 

机构地区：[1]河南省鹤壁水文水资源勘测局,河南鹤壁458030 [2]郑州大学水利与环境学院,河南郑州450001

出　　处：《人民黄河》2016年第9期19-23,共5页Yellow River

基　　金：国家自然科学基金资助项目(51079131);"十二五"国家科技支撑计划项目(2012BAB02D04-07)

摘　　要：基于新村流域1956—2014年月降水、蒸发及径流资料,采用多种统计学方法分析了径流及其影响因素的变化特征。结果表明:新村流域径流量减小趋势明显,且在1977年发生了突变,降水量呈一定的减小趋势,而蒸发量减小趋势明显;新村流域由气候变化引起的年径流深减小量为75.51 mm,由下垫面条件变化引起的年径流深减小量为98.40 mm。同时,流域内水文循环规律也发生了变化,径流系数由突变前的0.31减小为突变后的0.11。Quantitative analysis on runoff changing factors were done by using variety of statistical methods based on analysis on changing characteristics of runoff, precipitation and evaporation by using observed data during 1956 - 2014. The results show that runoff decreases obviously in Xincun watershed and the mutation happens in 1977 ; there is a certain decrease trend of precipitation and the decrease trend of evaporation is obviously; 75.51 mm and 98.40 mm runoff depth lead to decrease respectively for runoff by climate and underlying surface change. At the same time, the regularity of hydrological cycle also has been changed. Runoff coefficient is 0.31 before mutation year anddecreases to 0.11 after mutation year.

关 键 词：影响因素 变异 径流 降水 蒸发 新村流域 

分 类 号：TV213[水利工程—水文学及水资源]