Comprehensive Evaluation And Design Research Of Landscape Water Revetment With Ecological Restoration Function

Ecological environment of landscape water is closely related with the design of revetment. Combining ecological restoration with landscape revetment plays an indispensable role in the sustainable development of the landscape. The purpose of this paper is to study how to build landscape revetment combining with ecological restoration. The purification mode of landscape water should be returned to natural, achieving the Chinese garden’s pursuit of natural beauty.The research content of this paper as the following:(1) Combining with multiple subjects, the landscape revetment construction elements and evaluation system of ecological restoration would be researched.(2) Existing landscape revetment ecological restoration effect would be comprehensively analyzed in four aspect including ecological elements, engineering measures, social elements and economic benefits(3) In view of the current landscape revetment with functions of ecological restoration, put forward the improvement to help the landscape water to maintain long-term clean. What’s more, landscape ecological revetment modification design case is to be put forward.Certain findingshave been obtained through research and exploration. The main research conclusions are as follows:(1) Landscape water contaminant is mainly the microorganisms in the water which mainly includes the algae and protozoans. Water quality is mainly influenced in physical properties. Algae overgrowth in landscape water is the root cause of landscape water turning in the ugly or black. It is excessive content of nitrogen, phosphorus and other plant nutrients that cause eutrophication in landscape water directly(especially the enclosed landscape water).(2) According to main pollution source of landscape water, four revetment construction elements are put forward, including water element, ecological element, engineering element and economic element. Four elements include 28 factors. Thereinto ecological elements are most important, followed by engineering factor, again to economic factors. Existence of the ecological restoration function is not influenced by water element which only have impact on its ecological functions.(3) 18 factors of revetment construction are chosen as evaluation factors and plus factor and comprehensive evaluation system of landscape water body revetment. And it is concluded that 3 existing revetment in calm water, including palm fiber mat revetment, the turf and aquatic plant revetment, the ripped-rock revetment are with excellent comprehensive performance; 2 existing revetment in flow water, including willow tree stump revetment, revetment built with stone cage has excellent comprehensive performance.(4) Depending on the type of environment, landscape water is divided into five different types. By summing up the features of different environment water, revetment construction key points are concluded. 3 revetments with excellent comprehensive performance including the palm fiber mat revetment, turf and aquatic plant revetment, the willow tree stumps revetment are applied directly.At the same time, potential revetments are improved, including ripped-rock with plants revetment, ladder-like stone cage revetment, vertical stone cage revetment, u-shaped ecological concrete- aquatic plant revetment, ladder-like fish-nest brisk revetment, multiple fish-nest brisk revetment, multiple stone cage revetment. Comprehensive evaluation of above 10 ecological revetment grade is good, and most comprehensive evaluation index get high marks. Finally Liwan Lake and Lizhiwan River are takenas an design example to apply the ecological revetments.