农田引水拦河坝对漓江流域河流生态系统的影响  

Ecological Effects of Small Dams on Steam Ecosystems in Lijiang River Basin

作　　者：王晓超 蔡德所[2,3,4] 祝铁钢 张永祥[4] 林红军 武大勇 

机构地区：[1]衡水潮湿地保护研究所,河北衡水053000 [2]广西水利电力勘测设计研究院,广西南宁530023 [3]三峡大学水利与环境学院,湖北宜昌443002 [4]广西大学土木建筑工程学院,广西南宁530004

出　　处：《广西师范大学学报（自然科学版）》2012年第4期179-183,共5页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(40971280,30870345);中央分成水资源费资助项目(2010-2011)

摘　　要：本文通过对漓江下游黄沙河、兴坪河、金宝河、遇龙河4条主要支流上5个农田引水拦河坝进行研究,比较了坝上和坝下的生境、水质物化特性和大型底栖无脊椎动物群落等河流生态特性。研究结果表明:尽管拦河坝没有对河流的水体质量造成显著影响,但是农田引水拦河坝改变了河流的流速、底质、水生植物群落构成等自然生境状况,从而导致大型底栖无脊椎动物群落结构和功能在坝上和坝下之间存在显著的区别。因此,建议在对漓江流域水生态系统进行健康评价时应该考虑农田引水拦河坝所带来的生态影响。Many studies have investigated and assessed the ecological impacts of dams on river ecosystems, but few have focused on the effects of small dams in china. Habitat, aquatic quality, and benthic macroinvertebrates upstream and downstream of five small dams are studied on four tributaries of Lijiang river in the October of 2011. None of the fourteen measured aquatic physic-chemical characteristics except for NOz-N showed significant different between upstream and downstream of small dams. However, habitat measures such as velocity, substrate composition, and hydrophytic vegetation communities were changed by these small dams. Ephemeroptera taxa richness,Ephemeroptera,and Filters in upstream of small dams were higher than those in downstream. Finally,It＇s suggested that assessment of Lijiang ecosystems should regard the effects of small dams on its tributaries as one of those main anthropogenic activities.

关 键 词：拦河坝 漓江流域 大型底栖无脊椎动物 

分 类 号：X826[环境科学与工程—环境工程]