Discussion On Ecological Design Of Water Landscape Of Changsha Meixihu

City Lake is a city waterscape environment, also an attractive place for entertainment. With the improvement of life level, the demand of water landscape of the city is getting larger, artificial lakes are developed around the city. To maximize the lake scenery and economic effect, design and project implementation and management usually neglect ecological effect of landscape design of the lake, the lake water are subject to different degrees of pollution, the self purification capacity and ecological environment of the lake is weakened.Taking Changsha Meixihu as study case, the object of this paper is to explore the ecological landscape design of Meixihu. The methodology of this paper is literature research combined with field survey and typical case study the law, a prerequisite for this study is understanding Meixihu by investigation, combined with the landscape ecological design, theory and landscape ecological design principles, through analysis of typical domestic and abroad cases, eco design to explore the Meixihu landscape, the main analysis includes: ecological water treatment, water replenishing design, design of the waterfront plants, ecological revetment design, combining with the Meixihu itself based on the conditions on the basis of analysis of Meixihu, discussed the design of landscape ecology. Through the research, the main results are as follows:(1) Meixihu exchange water by channel constructed wetlands, rain, Longwangang River, Hongsian reservoir, port, through the rainwater collection system, water purification system to make up for the lake river connection systems and water reuse systems and ensure the quality and quantity of water, to prevent degradation of the water body, which is an essential point of this study.(2) The ecological water treatment of Meixihu rely on the control of the exogenous and endogenous pollution. Take measure to control the surrounding area sewage into the lake, to protect lake remediation, aquatic animals and plants system, to prevent eutrophication, algae bloom, to build compound oxygen ecological floating bed ecosystem at the bottom of the lake, fulfilling the construction of whole eco-system from each aspect, is also the focus and highlight of this study.(3) Meixihu water plant design:according to the form of the revetment and attract birds to match and selection of plants; natural style landscaping plant by plant height selection itself and between plants of different colors; plant configuration at the bottom of the lake, and the lake bank.(4) Ecological revetment design:using natural ecological revetment and artificial hard revetment combination of tactics, according to the different functions of the partition of Meixihu to choose embankment.