桂林市桃花江流域生态环境需水量的初步研究  

Preliminary Study on Eco-environmental Water Demand in Taohuajiang Valley,Guilin

作　　者：王岳川[1] 龙腾锐[1] 姜文超[1] 李在钟[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《重庆建筑大学学报》2007年第3期102-105,共4页Journal of Chongqing Jianzhu University

基　　金：国家自然科学基金重点项目(59838300)

摘　　要：提出了桂林市桃花江流域生态环境需水量内涵,即为维护流域生态环境质量在时间上不下降所需要的最小水量。结合实地调研对桃花江流域生态环境需水量进行了初步研究,通过运用蒙大拿法(Montana method)等计算方法,计算得出:该流域河道外生态需水量为0.149亿m3,占流域年均径流量的4%;河道内生态需水量为1.098亿m3,占流域年均径流量的30%。本研究为当地水资源可持续利用与管理提供了依据,并可为类似地区生态环境需水研究提供借鉴。Eco-environmental water demand in Taohuajiang Valley of Guilin is defined as the minimum water volume required by the valley to maintain the eco-environmental quality not to be degraded over time. By using the site survey data,the eco-environmental water demand in Taohuajiang valley is studied preliminarily. The results calculated indicate that： the out-stream eco-environmental water demand is about 14. 9 million m^3 per year,about 4 percent of annual runoff of the valley; and the in-stream eco-environmental water requirement is about 109.8 million m^3 per year,about 30 percent of annual runoff. This study provides scientific basis for local sustainable water resources use and management as well as for eco-environmental water requirement study in similar regions in terms of Karst geological condition and climate.

关 键 词：生态环境需水量 桂林市 桃花江流域 

分 类 号：TV213[水利工程—水文学及水资源]