摘要
水流是河流生境的主要决定因素之一,影响生物群落的组成和多样性。河流径流过程及特征可以通过水文参数值及其统计特征来反映,包括水文值的大小、发生时间、持续时间、发生频率和变化特征等。水利工程会改变河流天然径流过程。采用IHA法对葛洲坝的河流径流过程影响进行了评价,结果显示总体上葛洲坝水利枢纽对河流天然径流的改变不大,但其一定的削峰坦化作用可能是上涨率和下降率等参数值在建坝后发生一定变化的原因。
The flow regime is recognized as a key factor determining biological and physical processes and characteristics in a river. But water projects can substantially change the natural flow regimes of water bodies around the world. The IHA method is used in this paper to evaluate the effect of Gezhou Dam on the hydrologic regimes of Yangtze River using historical streamflow records obtained before and after the building of the dam. In general, the effect of Gezhou Dam on the hydrologic regimes of Yangtze River is rather limited, although it changes parameters such as rising and falling rates to some extent due to the limited storage capacity of the reservoir.
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2006年第4期522-526,共5页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金重大项目(30490235)资助
关键词
水利工程
IHA法
水文特征值
water projects
IHA method
hydrological characteristics
作者简介
陈启慧（1974～），女，湖南省醴陵人，讲师，博士研究生，主要从事水资源环境保护研究．E-mail：qihui_c@sohu.com
