| With the rapid growth of economy and development of city, the problem called "city disease" is becoming more and more serious, such as environmental pollution, resource shortages, traffic congestion and other issues. Cities, as the main habitat of human, the city’s air and environment quality not only influence our lives and health directly, but also affect our healthy and sustainable development related of the city. The city park is developed to meet the people’s will to the original forests and countryside. It get more and more attention of the urban residents. The city park has significant social and ecological benefits, which obtained the general recognition of the people. On the basis of natural and ecological planning and design in foreign city parks, this article summarized the common principle of the natural and ecological design in urban park design, and using the natural and ecological design method to investigate Jiu hua lake in the hunan xiangtan county. In addition this paper discussed the ideal scheme of natural and ecological urban park, trying to find the natural and ecological development way of urban park to provide a reference for other city park natural ecological design. In this paper, we study the key contents include the following:(1) Define the concept of city park, urban ecological park, ecological design, natural and ecological design. On the basis of the concept research of city parks and natural ecological design both at home and abroad, according to the development of city parks in China, analyzes and summarizes the existing ecological problems in the development of domestic city parks, this study will provide the basis for subsequent city parks natural ecological design methods.(2) Make it clear about main theoretical basis, including the sustainable development theory, landscape ecology theory and restoration ecology theory. Starting from the theoretical research, summarizes the design principle of ecological design, emphasizing that urban park design should show respect for nature and pay attention to the local characteristics, and the design should be optimized from the overall consideration, we should spare no efforts to achieve material reduction and resource recycling, energy recycle. First of all, Natural ecological design should from the perspective of the investigation and analysis of the basic situation of early work, identifying and analysis the park design concept and the design goal, and then park zoning plan, according to the needs of the natural ecological design and detailed design, such as, traffic, water plants and other natural ecological landscape design, landscape sketch expression of natural ecology, etc.(3) Take the Jiuhua lake park as an example, which the author participated in late prophase planning, design and construction management. By analyzing the location of the park (terrain conditions, natural climate, hydrological and cultural characteristics, the ecological environment), determine the park design target and design concept, planning the function zone using the ecological principle. Analyzing the expression of detail design in park from the line of sight organization, traffic organization, green landscape design and water design in such aspects, so as to realize the Jiuhua lake park natural ecological design goal. |