Landscape Evaluation For Sustainable City Wetland Park

City wetland parks , an efficient approach of appropriately protecting and utilizing the city parks, have been developing greatly both at home and abroad in recent years and achieved significant environmental ,social and economic benefits. However, as an important consisting part of city ecosystem, city wetland parks face huge pressures from the process of urbanization, such as the fragmentation of landscape structure ,the degradation of ecological function, all this leads to the declining of wetland's supporting ability to the sustainable development of city's social economy.Theories and methods of landscape ecology and sustainable development were applied to carry out evaluation of the sustainability of city wetland parks from both scales of wetland parks and urban areas aimed to guide the scientific planning & management of city wetland parks, so as to promote city wetlands perform its original function .Conclusions were drawn as follows:(1) The sustainability of city wetland parks depends on the following two factors:i. core and foundation : the function and structure of city wetland landscape itself.ii. support and stress: the development of city ecosystem and social economy.(2) Based on the analysis of ecological environment, social economy and function, a framework of ecological evaluation index system for city wetland parks' sustainability was put forward to carry out systematic research.(3) XiXi wetland park , with high ecological diversity and distinguished dominance ,consists of two major parts: natural wetland which accounts for 53.6% of the total area and artificial wetland which accounts for 39.9%(4) the landscape function of XiXi wetland park lies in its high biodiversity and distinguished ecological function(5) XIXI wetland park has well-formed ecosystem ,social economic benefits and function; as well as considerable supporting effect from the development of city's ecological environment and social economy. The evaluation grade for it is "good".(6) The major restricting factors of the sustainable development of XiXi wetland park are touring and water pollution, and the park management is aimed at controlling the touring burden and maintaining a good water quality.