首页|基于改进年内展布法的河道基本生态需水过程分析研究

基于改进年内展布法的河道基本生态需水过程分析研究

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
为科学分析计算河流生态水文过程对径流的年内动态需求,以河南省淮河干流大坡岭站、息县站、淮滨站等 3 个水文断面为研究对象,基于各站 1956～2016 年天然月均流量数据,运用改进的年内展布法计算生态流量过程,并与原年内展布法、Qp 法、近 10 年最枯月平均流量法、Tennant 法及最小月均径流量年内过程进行综合对比分析.结果表明,淮河干流河南段从大坡岭站到息县站、淮滨站基本生态流量依次增大,各水文断面一般用水期基本生态需水量在多年年均径流量占比达 10.5%～11.8%,鱼类产卵育幼期占比达 24.9%～30.0%.改进的年内展布法分析结果不仅继承了原方法较好反映天然径流的年内丰枯变化规律,又可以削弱极端水文事件的影响,提高了河道基本生态需水要求的生态功能目标的满足程度,适用于分析计算季节性明显河道基本生态需水量.该计算成果客观合理,对于科学确定河道内生态需水过程具有借鉴意义.
Analysis of Basic Ecologic Water Demand Process Based on Improved Dynamic Calculation Method
In order to analyze annual dynamic demands of instream eco-hydrological process,this paper selected Dapoling,Xixian and Huaibin hydrologic station of Huaihe River in Henan section as the research object.Based on natu-ral monthly average flow data of each station from 1956 to 2016,an improved dynamic calculation method was applied in calculating ecological flow process.Compared with the methods of traditional dynamic calculation,Qp,average flow of the driest month in recent 10 years,Tennant and the minimum monthly average runoff process during the year,the re-sults show conclusions as follows.Firstly,basic ecological flow increased in turn from Dapoling station to Huaibin sta-tion.Basic ecological water demand of each hydrological section was 10.5-11.8 percent of the annual average runoff dur-ing general water period,while the corresponding value was 24.9-30.0 percent during fish spawning period.Secondly,results by improved dynamic calculation method not only inherits the advantages of traditional method which reflects the variation laws of abundant and dry natural runoff,but also weakens the influence of extreme hydrological events.Fur-thermore,it can improve satisfaction degree of ecological function goals on instream basic ecological water demand,which is suitable for analyzing basic ecological water demand of seasonal river.Results of the research are objective and reasona-ble,which can provide scientific support for analyzing instream ecological water demand process.

improved dynamic calculation methodpercent of the average flow in the same periodshydrological methodecological water demand processthe main stream of the Huaihe River

张卫国、杨淇翔、张修宇

展开 >

河南省水文水资源中心,河南 郑州 450003

河南省水利勘测设计研究有限公司,河南 郑州 450016

华北水利水电大学水资源学院,河南 郑州 450046

改进年内展布法 同期均值比 水文学法 生态需水过程 淮河干流

河南省科技攻关项目河南省水利科技攻关项目

212102311156GG202042

2024

10.20040/j.cnki.1000-7709.2024.20240380

水电能源科学
中国水力发电工程学会 华中科技大学 武汉国测三联水电设备有限公司

水电能源科学

CSTPCD北大核心
影响因子：0.525
ISSN：1000-7709
年,卷(期)：2024.42(7)
  • 11