李雅

Li Ya

关键词：河道修复；绿色基础设施；城市流域；生态系统；社会效益

Keywords：River Restoration; Green Infrastructure; Urban Watershed; Ecosystem; Social Benefits

摘要：

城市化导致城市河道渠化和生态退化。通过生态修复重建城市河道的自然动态过程，有助于提升河道生态系统功能，促进城市流域健康。本文概述城市河道修复的内涵和方法；以西雅图市河道修复项目为例，阐述修复设计与城市功能、雨洪管理整合的方法和过程，并评估其结果和价值。研究表明：河道修复是促进西雅图重构城市流域生态连接的重要手段，以及未来绿色基础设施网络规划的关键廊道和节点；在建成环境的限制下，西雅图发展了局部渐进的修复策略，为城市可持续开发、社区复兴提供了良好契机；各利益群体的参与和协作是实践得以推进的保障；评价应基于多元目标及价值。这些经验可为中国“城市双修”工作提供具体思路，促进城市可持续转型。

Abstract：

Urbanization leads to canalization and ecosystem degradation of urban rivers. Ecological restoration would reestablish urban river dynamics, thus improve river ecosystem function and urban watershed health. This paper summarizes the definition and methods of urban river restoration. Through case study of several restoration projects in Seattle, it explores the integration of the restoration design with urban functions and stormwater management and assessed their outcomes and values. Some findings are highlighted. River restorations promote urban watershed connectivity and work as potential links and nodes of the green infrastructure network. The small cumulative restorations under urban constraints provide opportunities for urban sustainable development and community revitalization. Stakeholder’s participation and collaboration are key to the advance of restoration. Assessing restoration should consider multiple objectives and values. These lessons are valuable to the current ecological restoration and urban enhancement projects in China, promoting sustainable urban transformation.

李雅，天津大学建筑学院博士研究生；华盛顿大学景观建筑系联合培养博士研究生。liya@tju.edu.cn

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