水利水电科技进展2026，Vol.46Issue(3)：31-36,79,7.DOI:10.3880/j.issn.1006-7647.2026.03.004
基于径流实验的产汇流机理研究与过程模拟
Research on runoff generation and concentration mechanisms and process simulation based on runoff experiments
摘要
Abstract
To address the mismatch between point-scale physical formulations of runoff generation and concentration and their application at the watershed scale,a prototype rainfall-runoff experiment was conducted in the Nandawa experimental catchment from 2017 to 2018.Multi-source observations,including total runoff,stratified runoff components,groundwater level,and soil moisture,were collected.Based on the representative elementary watershed(REW)theory,watershed-scale conservation equations were derived using mass conservation principles,and a distributed REW hydrological model was developed.Layered runoff simulations and validations were then performed in the nested watershed in conjunction with the Xin'anjiang model.The results show that the REW model effectively reproduces seasonal runoff dynamics,with good agreement between simulated and observed series in terms of both trend and magnitude.Errors mainly occur during extreme rainfall events.The layered runoff simulation results based on the five-subzone structure are in good agreement with the observed data,effectively capturing surface runoff,interflow,and groundwater runoff.The simulated soil moisture content is generally consistent with the measured values.The runoff simulation method based on the REW model provides a new technical pathway for hydrological process simulation and mechanism analysis in small-scale watersheds.关键词
径流实验/产汇流机理/REW模型/嵌套流域/分层径流Key words
runoff experiment/runoff generation and concentration mechanism/REW model/nested watershed/layered runoff引用本文复制引用
许钦,袁肖琦,陈星,蔡晶,金晨,林晓清,周宏..基于径流实验的产汇流机理研究与过程模拟[J].水利水电科技进展,2026,46(3):31-36,79,7.基金项目
国家自然科学基金项目(52209031,U2443202,52579005) （52209031,U2443202,52579005）
水利部重大科技项目(SKR-2022067) （SKR-2022067）
山东省重点研发计划项目(2023CXGC010905) （2023CXGC010905）
中央级公益性科研院所基本科研业务费专项资金项目(Y523008,Y522018) （Y523008,Y522018）
南京水利科学研究院研究生学位论文发展基金项目(Yy525020) （Yy525020）
