基于河道生态需水量计算方法的研究  

Research on Calculation Method of River Ecological Water Demand

作　　者：赵海波[1] ZHAO Hai-bo(Liaoning Provincial Baishi Reservoir Administration Co.Ltd,Chaoyang 122000,China)

机构地区：[1]辽宁省白石水库管理局有限责任公司,辽宁朝阳122000

出　　处：《黑龙江水利科技》2020年第11期57-60,共4页Heilongjiang Hydraulic Science and Technology

摘　　要：文章对中位数法、年内展布法、7Q10法、逐月频率计算法、Tennant法等生态需水量常用计算方法,利用生态环境标准等级进行评价,并揭示了水生生物、污染物、降雨因素作用下河道状态的变化特征,以大凌河为例计算其生态需水量。研究表明:以同期多年平均流量的40%-60%、65%-75%计算河道枯水期(10月-次年4月)和丰水期(5-9月)生态需水量,具有较高的准确度与可靠性。研究成果对维持河流生态系统平衡、保护流域自然环境及计算生态需水量具有重大意义。In this paper,the Tennant method and other common methods were used to calculate the ecological water demand,such as median method,annual distribution method,7Q10 method,monthly frequency calculation method,using ecological environment standard grade to evaluate and reveal the variation characteristics of river channel state under the influence of rainfall factors of aquatic biological pollutants,and the Dalin River was taken as an example to calculate its ecological water demand.The study shows that the river dry season was calculated with 40%-60%、65%-75%of the average annual flow in the same period(October to April in next year)and ecological water demand in rainy period(May to September),having high accuracy and reliability.The research results are of great significance to maintain the balance of river ecosystem,protect the natural environment of watershed and calculate the ecological water demand.

关 键 词：多年同期 平均流量 计算方法 生态需水量 大凌河 

分 类 号：TV213.4[水利工程—水文学及水资源]