Plant Landscape Design Of City Park Based On The Environmental Psychology

City park is not only the place where people can relax and play but also an important part of urban ecological system. It provides the urban residents with places for amusement, bodybuilding and for carrying out various cultural and recreational activities. With the ecological view sinking deep in people's hearts, urban residents have an itch for enjoying natural scenery in the city. The proportion of plant which is a component part in city park landscape is growing. Landscape architects are paying more and more attention to plant landscape design. City parks with plant as the theme have already been built in some cities.However, the results of our survey shows that the architects currently pay more attention to the forms of the landscape plants while the functional requirements of parks are ignored. During the construction of a park, the government often blindly pursues green space ratio, and designers just take plants as the subsidiary of buildings and hard landscapes, pursuing the evergreen effect and neglecting plants'role of creating landscape and visitors'psychological needs of landscape plants. People create the environment while the environment also affects people. Full understanding of visitors'psychological needs of the landscape plants may help designers create a piece of successful work when they are making the landscape design of a park.The paper introduces the relevant theories of environmental psychology to the park plant landscape designing. Through consulting a large number of documents, the basic knowledge of environmental psychology is concisely described. The paper analyzes the cognition of landscape based on environmental psychology theory and summaries the application of environmental psychology theory in plant landscape design:(1) The paper summarizes the visitors'psychological demands of the urban park plant landscape:demand of landscape diversity, demand of the security of landscape, demand of landscape accessibility, demand of landscape identifiability, demand of comfort of landscape, demand of territorial sense of landscape; demand of landscape privacy control as well as special groups' demand of landscape. (2) According to visitors' psychological demand of city park plant landscape, the paper proposes the corresponding design strategy from the aspects of the plant material, the plant level, open and close space, plant color and so on.(3) The paper discusses the park plant landscape content and the landscape form based on environmental psychology. Finally through the case study, the paper analyzes the Hong En temple park's plant landscape contents and forms from the perspective of environmental psychology. It proposes the shortcomings of plant landscape design in this case, gives the suggestions for improvement and provides the practical basis for creating the park plant landscape which can meet the visitors' psychology needs.Due to the limitation of the author's ability, the research is far from deepgoing. But the main purpose of the paper is to make the application of environment psychology more flexible and more appropriate in the plant landscape design of city park and to attract more attention on it in future research.