四川天全白沙河流域小水电梯级开发的景观要素影响研究

以水电开发前景观生态环境本底作参照,通过水电梯级开发后的景观生态现状调查以及水、声环境现状分析,探索了四川天全白沙河流域小水电梯级开发的景观要素影响,研究表明:水电梯级开发后景观要素类型发生较大的改变,逐渐向着高度人工化方向发展。水电开发一定程度上降低了植被基质连通性但对基质的孔性影响不大;破坏了湿地、耕地、荒地等生境资源斑块的生物多样性、生态过程;改变了河流廊道的宽度、曲度、连通性,水体内环境以及水电设施的廊道效应。

Studies on the landscape Element Influence of the Small Hydropower Stave Development of Baisha River in Tianquan Sichuan Province

Based on the the background of the landscape ecological environment,in this article,through investigating the present situation of landscape ecology after small hydropower stave development and analyzing the present situation of water and sound environment,the landscape element influence of the small hydropower stave development of Baisha river in Tianquan Sichuan province were explored.And it indicated that: after the small hydropower stave development,the landscape essential factor type changed much,gradually developing to a highly artificial direction.To a certain degree,the small hydropower stave development reduced the vegetation matrix connectivity,but the influence on the porosity of the matrix was small.Biodiversity and the ecology process of the habitat resources patch such as the wetland,cultivated land and the open land were destroyed.The width,curvature,connectivity of river,the water environment,as well as the corridor effect of small hydropower facility were changed too.