沙颍河流域径流过程模拟与径流组分变化特征  

Simulation of runoff process and variation characteristic in Shaying River basin

作　　者：甘容 陈长征 GAN Rong;CHEN Changzheng(The Joint Institute of Internet of Water and Digital Water Governance,Tsinghua-Ningxia Yinchuan,Beijing 100084,China;School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,China;Henan Provincial Key Laboratory of Groundwater Pollution Prevention and Remediation,Zhengzhou 450001,China)

机构地区：[1]清华大学-宁夏银川水联网数字治水联合研究院,北京100084 [2]郑州大学水利科学与工程学院,郑州450001 [3]河南省地下水污染防治与修复重点实验室,郑州450001

出　　处：《南水北调与水利科技（中英文）》2021年第1期83-91,128,共10页South-to-North Water Transfers and Water Science & Technology

基　　金：清华大学水沙科学水利水电工程国家重点实验室及宁夏银川水联网数字治水联合研究院联合开放研究基金资助课题(sklhse-2020-Iow11);国家自然科学基金(51509222,51279183)。

摘　　要：采用线性关系和非线性关系对沙颍河流域的地下水退水曲线进行拟合对比,基于改进的SWAT(soil and water assessment tool)模型对沙颍河流域径流过程进行模拟,并采用Nash-Sutcliffe效率系数、百分比偏差及确定系数等3个指标对模拟效果进行评价,在此基础上,分析沙颍河流域径流过程的年内和年际变化特征。结果表明:沙颍河流域地下水退水曲线非线性关系拟合比线性拟合效果好,基于此建立的模型模拟结果较好;沙颍河流域地表径流、壤中流和基流分别占径流量的55.5%、25.4%和19.1%,冬季径流主要由基流补给,径流年内分配与降水变化基本一致,具有明显的季节变化和不均匀性;1961-2014年径流量呈上升趋势,地表径流和基流的波动与径流的变化基本一致,呈上升趋势;1961-2014年壤中流呈下降趋势。The groundwater recession curve in the Shaying River basin is fitted and compared by linear and nonlinear relationships.Based on the improved SWAT(soil and water assessment tool)model,the runoff process of the Shaying River basin was simulated,and the simulation effect was evaluated by the Nash Sutcliffe efficiency coefficient,percentage deviation,and determination coefficient.On this basis,the annual and interannual variation characteristics of the runoff process were analyzed.The results show that:the non-linear fitting of the groundwater recession curve in the Shaying River basin was better than the linear fitting,and the simulation results of the model based on the non-linear process were good;the surface runoff,the interflow,and the baseflow accounted for 55.5%,25.4%,and 19.1% of the runoff,respectively,the runoff in winter was mainly supplied by the baseflow,the annual distribution of runoff was consistent with the change of precipitation,with obvious seasonal change and nonuniformity;the fluctuation of surface runoff and baseflow is consistent with the change of runoff,showing an upward trend,while the interflow shows a downward trend from 1961 to 2014.

关 键 词：径流过程 地表径流 基流 SWAT模型 沙颍河 

分 类 号：TV213[水利工程—水文学及水资源]