Research On Establishment And Evaluation Of Ecological Slope Protection System Of Town River

Town river is a essential factor in the existence and development of town, and it is in a very important position in economy development and ecological protection of town. With the development of society and economy, the mankind carried on the multiple target, omnibearing, large scale and high frequency intervention to the town river, which destruct the health of town river ecosystem. In river ecosystem, slope protection ecosystem that is in the edge of terrestrial ecosystem and aquatic ecosystem constitute the ecotone having the edge effct, slope ecosystem fully reflect the mankind reformation activity and the collision and conversion of matter,energy and information between mankind and river. Thus, research on ecological slope protection has very important meaning on maintaining and raising the service function of town river ecosystem, protecting the health of town river ecosystem.Aim at the existing deficiency of traditional strand slope protection and exiting ecological slope protection, this paper regard the slope protection ecosystem of town river as the object, following contents will be principally discussed.(1) Based on the research of traditional strand slope protection and exiting ecological slope protection, the concept of ecological slope protection is put off, the connotation of ecological slope protection is analyzed, and finally this paper firstly points out that research on ecological slope protection should follow the Ecosystem theory, Holism theory, Species diversity theory and Dissipation theory.(2) On the base of ecosystem ecology theory and sustainable development theory, the composition and characteristics of town river slope protection ecosystem are analyzed, the system of synthetical evaluation indicators of town river slope protection ecosystem is built up, the assay and calculation methods of evaluation indicators are discussed.(3) The new material of ecological slope protection-ecological concrete are developed, the main character of slope protection system of ecological concrete arediscussed through the combination of indoor experiment and field experiment.(4) The Analytic Hierarchy Process(AHP), Integrated evaluation indexes and gray correlation degree are applied to make a overall and objective evaluation of precast concrete slope protection system, vegetation slope protection ecfcsystem and ecological slope protection ecosystem. Results show that the effect of ecological concrete slope protection is the best, vegetation slope protection ecosystem takes the scond place and precast concrete slope protection system is relatively less, which thoroughly illustrate that ecological slope protection can not only have the efficiency of traditional slope protection, such as releasing flood, draining water-logged and water and soil conservation, ect, but also can incorporate the contents in many aspects, such as town landscape, town culture and town ecology, ect. So the harmony between people and nature can be realized, and significant society efficiency and ecological efficiency are obtained. Finally, it is pointed that because ecological concrete technology is in the start stage, it still lies that production technology is not perfect, the cost of slope protection is less highIn this paper research on ecological slope protection system of town fiver enrich the research content of river ecosystem and supply scientific according for the build up and sustainable management of ecological river system.