基于改进SRM模型的西北干旱区融雪径流模拟研究  

Research on Snowmelt Runoff Simulation in the Arid Northwest Region Based on Improved SRM Model

作　　者：李斐 黄永庭 朱彦儒 王亚楼 王水献[2] LI Fei;HUANG Yongting;ZHU Yanru;WANG Yaou;WANG Shuixian(Geological Hazards Prevention Institute,Gansu Academy of Sciences,Lanzhou 730000,China;College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]甘肃省科学院地质自然灾害防治研究所,甘肃兰州730000 [2]兰州大学资源与环境学院,甘肃兰州730000

出　　处：《水文》2025年第1期16-21,共6页Journal of China Hydrology

基　　金：甘肃省自然科学基金项目(24JRRA1139);甘肃省科学院人才引进科研启动项目(QD2024-07);甘肃省科学院青年基金项目(2024QN-02)。

摘　　要：积雪融水是西北干旱区水资源的重要组成部分,准确模拟融雪径流过程对西北干旱区水资源管理和规划具有重要意义。本研究以新疆开都河流域上游为研究区,通过设置径流判定阈值与径流放大函数对SRM模型进行改进,以补充考虑地下水对径流过程的影响。在此基础上,拟定不同正积温、径流系数以及退水系数组合下的模型参数方案,使用2000—2009年实测径流数据进行参数率定与模型验证。结果表明:改进的SRM模型对研究区冬季径流过程模拟精度明显提高,而基于最高气温分段函数的正积温估算方案以及基于降水量分段函数的径流系数确定方案均可明显提高模型模拟精度。研究成果可为西北干旱区的水文预报以及水资源管理提供参考。Snowmelt runoff is an important component of water resources in the arid mountainous regions of Northwest China,and accurately simulating the snowmelt runoff process is of great significance for the management and planning of water resources in the arid areas of Northwest China.Taking the upper reaches of the Kaidu River Basin in Xinjiang as the study area,the snowmelt-runoff model(SRM)was improved by setting runoff determination thresholds and runoff amplification functions to supple-ment the consideration of groundwater impact on the runoff process.On this basis,different schemes of model parameters were for-mulated under combinations of positive accumulated temperature calculation,runoff coefficients,and recession coefficients,using measured runoff data from 2000 to 2009 for parameter calibration and model validation.The results show that the improved SRM model significantly increases the simulation accuracy of winter runoff processes in the study area,and both the positive accumu-lated temperature estimation scheme based on a segmented function of the highest temperature and the runoff coefficient determina-tion scheme based on a segmented function of precipitation can significantly improve the simulation accuracy.This study could provide references for hydrological forecasting and water resource management in the arid areas of Northwest China.

关 键 词：SRM模型 融雪径流 开都河上游 

分 类 号：P33[天文地球—水文科学] TV11[水利工程—水文学及水资源]