Abstract:The conservation and restoration of vegetation diversity is significant to the management of urban wetlands, underlying the effects of urbanization and global climate change. Wetland vegetation usually shows different diversity characteristics because of the difference of wetland location and human activity disturbance. Thus some differentiation approaches are necessary to the conservation and restoration of wetland vegetation at regional level. The wetland vegetation diversity and human activity disturbance should be considered as the basis of such differentiation approaches. Biodiversity Hotspots approach was usually used to reflect the effectiveness and the priority of biodiversity conservation in the planning of biodiversity conservation at large scale. And it could also serve as a new method to the conservation and restoration of wetland vegetation at small and medium scale. Based on the principals of biodiversity hotspots and plant diversity feathers, a classified protection framework and related countermeasures were studied, by the investigation of plant diversity for vegetation conservation and restoration of urban lake wetlands in Wuhan. The results showed that, the change trends of species richness, plant diversity, ecological dominance, and evenness of vascular plants in lake wetlands in Wuhan are relative consistent. But, there were significant differences in plant diversity (abundance, diversity and evenness), association abundance and common wetland plants diversity (including percents of total common wetlands, abundance and dominance) between various fielded lakes. The spatial distribution of abundance of vegetation types, formation and association in different lakes were very consistent. Even though the vegetation communities were abundant in Donghu Lake, Yanxihu Lake, Sanjiaohu Lake, Yandonghu Lake and Chedunhu Lake, the majority of lakes still contain fewer plant community types. And the number of typical plant species had more obvious spatial variation. According to these characteristics, the lakes were classified into four classes, which included native vegetation lakes, secondary vegetation lakes, artificial vegetation lakes, and degraded vegetation lakes. In the native vegetation lakes, wetland natural reserves should be constructed so as to conserve the native wetland plants. The secondary vegetation lake is the most common type of lakes. Differentiated management measures should be developed according to their location. In urban area, vegetation buffer zones with the width of 30-100m should be considered to establish in order to promote restoration and development of wetland natural vegetations; while in agricultural areas, the government and managers should guide and regulate the mode of agricultural production around the lake to reduce disturbance of the human activities. Urban wetland parks should be constructed to protect the artificial vegetation lakes and promote the near-natural restoration of wetland vegetations. Some ecological engineering methods are also needed to improve wetland habitat of the degraded lakes as soon as possible, and then recover them with near-natural wetlands vegetation. The approach shown in this study could be used to determine protection levels of lake-wetland vegetation according to plant diversity and its influencing factors. It provides a basis for strategy development, selection of specific measures and the practice of management activities of wetland vegetation conservation. It is hoped that the results will be integrated into the comprehensive management of urban lake-wetland protection and restoration.