上海世博后滩湿地的景观修复

Landscape Restoration of Shanghai Expo Houtan Wetland

湿地生境在城市化过程中遭受严重破坏并形成残存斑块,使其物理性状、生态功能、生物因子与自然湿地存在差异,需要采取不同的景观恢复目标和策略。世博后滩湿地的景观修复策略注重维持生境的基本条件:在水动力学恢复和控制表土侵蚀的基础上,扩大湿地生境斑块和建立功能性湿地,以增加缓冲能力,防止生物入侵,进行植被保育和恢复重建,为城市化过程中残存湿地斑块的保护提供了经验。

Wetland habitats are often destroyed seriously,and fragmented into remnant pitches in urbanization. These wetlands are physically,biologically and functionally different from natural wetlands,and landscape restoration of them has to adopt different goals and strategies. The landscape restoration of Expo Houtan Wetland focused on general conditions of remnant wetlands restoration. First of all,measures were taken to repair hydrological features and control bank erosion,and then expand wetland pitches and establish functional units for strengthening buffer capacity of wetland. Finally,plant conservation and reconstruction were accomplished on the base of ecological security. This project provides great experience for landscape restoration of remnant wetland habitats in urbanization.