摘要
受地形及季风影响,我国西南山区河流丰枯变化明显,常见的生态流量确定方法对于西南山区河流的适用性暂不明确。为探究适用于西南山区河流的生态流量确定方法,本文选取大环江作为典型河流,对比分析水文学法、水力学法应用于西南山区河流的生态流量计算结果。结果表明,Texas法、Lyon法等基于月均流量的水文学法汛期生态流量计算结果偏大;以特定时段最枯或特枯流量作为生态流量的方法,如7Q10法、Qp法等,忽略了西南山区河流的季节性变化;推荐以R2Cross法、湿周法计算结果分别作为上、下包线,结合Q50-Q90法、Tennant法等水文学方法综合确定西南山区河流生态流量目标。
Due to the influence of topography and monsoon,the abundance and exhaustion of southwest mountain rivers vary sig‐nificantly.The applicability of common ecological flow calculation methods to southwest mountain rivers is not clear yet.this pa‐per selected the Dahuan River as a typical river to compare and analyze the ecological flow calculation results of hydrological method and hydrodynamic method applied to southwest mountain rivers.The results show that the ecological flow based on the monthly average flow like the Texas method and the Lyon method in the flood are large.The methods that use the driest or extra-dry flow at a specific time as ecological flow,such as 7Q10 method and Qp method,ignore the seasonal variation of south‐west mountain rivers.It is recommended to use the calculation results of R2-Cross method and wet cycle method as the upper and lower pack line respectively,and combine the hydrological methods such as Q50-Q90 method and Tennant method to deter‐mine the ecological flow target of southwest mountain rivers comprehensively.
作者
姚航斌
万东辉
张丽
陈捷汝
董延军
王凌河
郑久瑜
YAO Hangbin;WAN Donghui;ZHANG Li;CHEN Jieru;DONG Yanjun;WANG Linghe;ZHENG Jiuyu(Pearl River Water Resources Commission of Pearl River Water Resources Research Institute,Guangzhou 510611,China;College of civil engineering of Fuzhou University,Fuzhou 350000,China)
出处
《水文》
CSCD
北大核心
2023年第5期57-62,共6页
Journal of China Hydrology
基金
广西重点研发计划项目(桂科AB19259015)
科技基础资源调查专项项目(2019FY101900)。
关键词
西南山区河流
生态流量
水文学法
水力学法
southwest mountain rivers
ecological flow
hydrological method
hydraulic method
