水蚀风蚀交错区河流径流量变化及影响因素分析  

Runoff Changes and Affecting Factors of the River in Water-Wind Erosion Crisscross Region

作　　者：王金花[1,2] 李占斌[1] 李鹏[1] 王添[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,西安710048 [2]黄河水利科学研究院,水利部黄土高原水土流失过程与控制重点实验室,郑州450003

出　　处：《内蒙古大学学报（自然科学版）》2016年第2期180-188,共9页Journal of Inner Mongolia University：Natural Science Edition

基　　金："973"计划(2011CB403303);河南省创新型科技人才队伍建设工程(162101510004);中央公益性科研院所专项经费项目(HKY-2011-15)

摘　　要：以水蚀风蚀交错区内西柳沟流域为研究对象,根据流域把口站1960-2010年长时间序列径流资料,运用线性倾向估计、小波分析、最大熵谱分析、Mann-Kendall突变检验及累积距平等数理统计分析方法,揭示西柳沟流域年径流量变化的趋势性、周期性及其突变性,并探讨分析了其变化影响因素.结果表明:径流量变化年际差异大,存在减少的变化趋势,但并没有通过显著性检验;小波及最大熵谱分析结果表明,西柳沟年径流量存在3年、5年、9年以及21年变化周期,其中3年变化周期为径流量变化第一主周期;Mann-Kendall及t-检验结果表明,年径流量在2004年和2006年左右发生了突变;径流量变化受降影响最为明显,其峰谷值和周期变化均随降雨的变化而变化,流域坝库工程对降雨径流的拦蓄作用明显,2000以来的淤地坝建设使得径流量序列发生突变.The trend,the periodicity and the paroxysmal variation of the annual runoff in Xiliugou river,the typical river in water-wind erosion crisscross region,have been analyzed according with the measured data from 1960 to 2010,and the affecting factors were analyzed.Many research methods have been applied to this study,including the linear tendency estimate method,wavelet analysis method,the maximum entropy spectrum analysis method,Mann-Kendall test method and cumulative percentage anomaly method.The results were as follows：1）The runoff of Xiliugou varied a lot among different years.The overall trend was reducing but without significant difference among those years.2）According to the results drawn by wavelet analysis method and the maximum entropy spectrum analysis method,there were four period cycles of the annual runoff in the Xiliugou river,which were three-years,five-years,nine-years and twenty-one-years,respectively.The main period cycle was three-years.3）The paroxysmal variation has been studied using the Mann-Kendall test method and t-test method and the results show that a drastic runoff change may happened in the year 2004 and 2006.4）The runoff was mainly affected by the precipitation,and its peak-to-valley values and period cycle changed according to the precipitation.The dam that built on the river had a significant storage effect to the rainfall runoff and the runoff had a significant change since dams were built from the year 2000.

关 键 词：径流量 影响因素 降水 淤地坝 水蚀风蚀交错区 

分 类 号：P9[天文地球—自然地理学]