摘要
从保护生物学来看,保护生物多样性最有效的办法是保护生境.天然弯曲河道独特的水沙特性能够创造出丰富多样的生境,可为各种水生生物提供良好的栖息场所.若能充分利用弯道水流特征,尤其是利用其对河床形态的改变作用,就能创造出多样的生境,从而达到保护或恢复受损河道水生生物多样性的作用.然而,有关弯道水流的研究大多集中在弯道水流结构、泥沙运动与河床变形等方面,系统研究弯道对水生生物栖息的改善或恢复的并不多.为此,首先系统梳理了国内外关于弯道水流在水流结构、泥沙运动与河床变形和水生生物栖息地修复以及相关数值模拟等方面的研究进展;其次,基于利用弯道水流改善水生生物栖息地机理研究方面的不足,提出了今后在弯曲河道栖息地修复方面应开展的研究重点和方向.
According to the view of conservation biology, habitat protection is the most effective way to protect biodiversity. The unique water and sediment characteristics of natural meandering rivers can create a variety of habitats and provide a good habitat for all kinds of aquatic lives. If the flow characteristics of the bend can be made full use of, especially the changing effect of a riverbed shape, a variety of habitats can be created, so as to protect or restore the aquatic biodiversity of a damaged river. However, most of the researches on the bend flow are concentrated on the flow structure, sediment movement and river bed deformation, and systematic researches on the improvement or restoration of aquatic habitat by the bend are not so much. For this reason, this paper firstly reviews the research progress on the flow structure, sediment movement, riverbed deformation of the bend flow, and aquatic habitat restoration and related numerical simulation. Secondly, based on the deficiency of the research on the mechanism of using the bend flow to improve the aquatic habitat, the most important aspects and research fields on the restoration of the bend channel habitat are put forward.
作者
张新华
邓晴
文萌
王明
ZHANG Xin-hua;DENG Qing;WEN Meng;WANG Ming(State Key Lakoratorr of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,P.R.C.)
出处
《西南民族大学学报（自然科学版）》
CAS
2019年第6期637-645,共9页
Journal of Southwest Minzu University(Natural Science Edition)
基金
国家自然科学基金(51579162,51879174)
国家重点研发项目课题(2018YFC1505004)
关键词
弯曲河道
水流结构
河床形态
水生生物栖息地
生态修复
meandering river channel
flow structure
riverbed form
aquatic habitat
ecological restoration
