基于水文学法的连江高道断面生态流量研究  

Study on Ecological Flow of Gaodao Section of Lianjiang River Based on Hydrology Method

作　　者：郑键鹏 ZHENG Jianpeng(Qingyuan Hydrology Sub-bureau of Guangdong Province,Qingyuan 511599,China)

机构地区：[1]广东省水文局清远水文分局,广东清远511599

出　　处：《广东水利水电》2023年第11期48-54,67,共8页Guangdong Water Resources and Hydropower

摘　　要：为得到连江干流高道断面各月的生态流量,基于高道水文站1991-2020年的实测径流数据,采用常用的水文学计算方法,分别以Tennant法、Texas法、Tessman法、NGPRP法、90%保证率法、最枯月平均流量法共6种水文学法,计算断面的生态流量结果,通过综合分析与比较,确定最合理的生态流量计算方法。结果表明:Tennant法最符合连江高道断面的生态需求,经满足率分析、鱼卵动物生态需水保障和生态状况评级,计算所得的生态流量在年内丰枯变化的水文节律、河道生态的环境状况、不同水期的满足程度等方面具有明显优势。研究成果可为保障连江流域生态流量控制断面、建立生态流量管控机制提供科学依据与数据支撑。In order to obtain the ecological flow rate for each month of the Gaodao section of the main stream of the Lianjiang River,based on the measured runoff data of the Gaodao hydrological station from 1991 to 2020,six common hydrological calculation methods,including the Tennant method,the Texas method,the Tessman method,the NGPRP method,the 90%guaranteed rate method and the mean flow rate of the driest month method,were used to deduce the ecological flow rate for the Gaodao section of the Lianjiang River.The results show that the Tennant method was the most suitable for the ecological requirements of the Lianjiang River.The calculated ecological flow rate has obvious advantages in terms of the hydrological rhythm of intra-annual variation of wet and dry changes,the environmental condition of the river ecology,and the degree of satisfaction in different water periods after the satisfaction rate analysis,ecological water protection and condition rating.The arcticle can provide scientific basis and data support for ensuring the control of ecological flow control of the Lianjiang River Basin and establishing an ecological flow control mechanism.

关 键 词：生态流量 连江 高道断面 水文学法 

分 类 号：P333[天文地球—水文科学]