颍河源区径流变化特征及生态基流保障研究  

Runoff Change Characteristics and Ecological Base Flow Guarantee in the Source Region of Yinghe River

作　　者：王国重[1] 李中原 卢圆章 杨丹 张武云 张继宇 李永丽 WANG Guozhong;LI Zhongyuan;LU Yuanzhang;YANG Dan;ZHANG Wuyun;ZHANG Jiyu;LI Yongli(Hydrology and Water Resources of Yellow River Scientific Research Institute,Zhengzhou,Henan 450004,China;Water Resources Immigration Affairs Center in Henan Province,Zhengzhou,Henan 450003,China;Hydrology and Water Resources Measurement and Reporting Center in Henan Province,Zhengzhou,Henan 450003,China;Zhoukou Branch of Hydrology and Water Resources Measurement and Reporting Center in Henan Province,Zhoukou,Henan 466000,China;Nanyang Branch of Hydrology and Water Resources Measurement and Reporting Center in Henan Province,Nanyang,Henan 473000,China;Yellow River Henan Bureau,Zhengzhou,Henan 450003,China;Hydrology and Water Resources Center in Henan Province,Zhengzhou,Henan 450003,China)

机构地区：[1]黄河水文水资源科学研究院,河南郑州450004 [2]河南省水利移民事务中心,河南郑州450003 [3]河南省水文水资源测报中心,河南郑州450003 [4]河南省周口水文水资源测报分中心,河南周口466000 [5]河南省南阳水文水资源测报分中心,河南南阳473000 [6]河南黄河河务局,河南郑州450003 [7]河南省水文水资源中心,河南郑州450003

出　　处：《水利与建筑工程学报》2024年第5期192-198,共7页Journal of Water Resources and Architectural Engineering

基　　金：河南省科技攻关计划(GG202230)。

摘　　要：为了探究人类活动引起的河川径流变化对生态基流的影响,基于颍河源区1965—2020年逐月径流资料,采用Mann-Kendall、R/S检验法、累积距平法和集中度、不均匀系数分析径流变化趋势、突变与持续特性,并据断面生态基流调控值,剖析径流变化对生态基流保障的影响。结果表明:源区年径流呈不显著减少态势,年内分配呈单峰型,主要集中于汛期;集中度与不均匀系数相关系数0.9460,变化趋势大体一致,均呈显著减少态势,且Hurst指数均>0.5,意味着源区径流年内不均匀分配状况将有所改观;受人类活动影响,源区径流在1990年发生了突变,且年、月径流Hurst指数均>0.5,表明未来一段时间径流量将呈减少态势,径流的突变与减少使生态基流得不到保障,甚至断流的月份增多。在开发利用河道水流资源时应保持适度,同时要开源节流、避免挤占生态基流,保障流域生态安全。To explore the impact runoff changing of river by human activities on ecological base flow,the trend,abrupt change and persistence characteristics of runoff were analyzed using Mann-Kendall,R/S test and cumulative anomaly method with indexes of concentration degree and non-uniformity coefficient by monthly runoff monitoring data from 1965 to 2020 in the Yinghe River source region.The influence of runoff change on ecological base flow guarantee in source area was analyzed by the control value of base flow in the section.The results showed that annual runoff in the source area was not significantly reduced,and the annual distribution was unimodal,mainly concentrated in flood season.The correlation coefficient between concentration degree and non-uniformity coefficient was 0.9460,and the change trend was generally the same,both of them showed a significant reduction trend,and Hurst index were greater than 0.5,indicating that the annual uneven distribution of runoff would be improved in the region.Due to human activities,there was a sudden change for runoff in 1990 in the source area,and both the annual and monthly runoff Hurst indices were greater than 0.5,indicating that the runoff would decrease in the future.The sudden change and decrease for runoff would lead to the increase of the months when the ecological base flow couldn't be guaranteed,even cut-off.Therefore,in the development and utilization of river water resources,moderation should be maintained,while opening up sources and reducing flow,avoiding encroachment on the ecological base flow of the river,and ensuring the ecological security of the watershed.

关 键 词：径流 生态基流 人类活动 保障 

分 类 号：P333.1[天文地球—水文科学]