棕地概念及国内外开发利用实践

Concept of Brownfield and Its Development and Utilization Practice at Home and Abroad

棕地开发与再利用是城市土地供给的重要途径。当前,棕地规模大、治理对象难以识别、修复标准相对单一、规划体系与生态修复脱节、公众认知与参与不足等是其治理和再利用过程中最主要的问题。本文以棕地再利用为出发点,结合棕地影响阈值,明确人体健康指标,分类确定棕地再利用标准。采取应对多种情景的风险回避、全生命周期的损失控制、多利益群体的风险转移、多种技术的风险承担等措施,从规划对象、修复标准、规划内容与流程、管理体系、工作机制等方面入手,提出基于风险管控的棕地治理和再利用规划的建议。

Urban brownfield reuse is an important way to supply urban land.At present,brownfields are large in scale,difficult to identify as governance objects,with relatively simple restoration standards and planning systems.Disjointed ecological restoration,insufficient public awareness and participation have become the main difficulties and problems in the process of governance and reuse.Taking brownfield reuse as a starting point and combining brownfield impact factors,human health indicators are clarified,and brownfield land reuse standards categorized.Taking measures and methods such as risk avoidance in multiple scenarios,full life cycle loss control,risk transfer by multiple interest groups,and risk-taking by multiple technologies,ranging from planning objects,restoration standards,planning content and procedures,management systems,work is started with the mechanism and other aspects,and strategies for urban brownfield governance and reuse planning based on risk management are proposed.