摘要
黄河源区是黄河流域重要的产流区和水源涵养区,年径流量占黄河流域径流量的三分之一左右,对流域水资源安全具有重要意义。总结了近20 a发表的有关黄河源区径流演变特征及其影响因素的相关文献,对研究成果进行了系统梳理、总结和对比。各研究成果在黄河源区径流整体变化趋势上具有一致性,近几十年黄河源区径流总体呈下降趋势,且存在丰枯交替的演变特征,径流年内分配不均,存在不同时间尺度的周期性变化,未来一定时期黄河源区径流仍将有所下降。但在径流演变驱动机制方面存在一定的分歧,气温和蒸发对径流变化的影响机制仍不明确,未来径流变化的定量预测仍存在差异。基于此,未来应注重开展黄河源区径流演变驱动机制、空间特征及未来趋势等方面的研究,为黄河源区水源涵养能力提升提供支撑。
The source area of the Yellow River is an important runoff⁃producing and water conservation area in the Yellow River Basin.The annual runoff of the source area accounts for about one⁃third of the total runoff of the basin,which is very important for the water resources se⁃curity of the Yellow River basin.This article summarized the literatured published in the past two decades about the evolution characteristics of runoff and its influencing factors in the source area of the Yellow River.Most research results indicate that the runoff in the source region of the Yellow River has shown a downward trend and alternation of abundant and dry seasons in recent decades.The annual distribution of runoff is extremely uneven,and there are periodic changes in different time scales.The runoff in the source area of the Yellow River will still de⁃crease in a certain period in the future.However,there are some differences in the driving mechanism of runoff evolution according to the re⁃search results.The influence mechanism of temperature and evaporation on runoff is still unclear,and there are still differences in quantita⁃tive prediction of runoff in the future.Then more attention should be paid to the driving mechanism,spatial characteristics and evolution trend of the runoff in the Yellow River source area in the future,so as to provide support for the improvement of water conservation capacity.
作者
王道席
田世民
蒋思奇
董晓宁
李志威
张丽
WANG Daoxi;TIAN Shimin;JIANG Siqi;DONG Xiaoning;LI Zhiwei;ZHANG Li(Yellow River Institute of Hydraulic Research,YRCC,Zhengzhou 450003,China;North China University of Water Resources and Electric Power,Zhengzhou 450046,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)
出处
《人民黄河》
CAS
北大核心
2020年第9期90-95,共6页
Yellow River
基金
国家自然科学基金资助项目(51979120,51979012)
黄科院基本科研业务费资助项目(HKY-JBYW-2020-33,HKY-JBYW-2020-22)。
关键词
黄河源区
径流演变
降水
气温
下垫面
未来趋势
source area of Yellow River
evolution of runoff
precipitation
temperature
underlying surface
trend in future
