香港地区“城市固废景观”类棕地再生机制研究

Brown elds Regeneration Mechanism of“Urban Solid Waste Landscape”in the Hong Kong Special Administrative Region of China

随着城市扩张与人口增长,当代城市环境中的固废处理基础设施与城市空间的关系日趋紧密,冲突亦日益增长;同时,前固废设施场地又具备较高潜质转变为城市开放空间。鉴于此背景,提出“城市固废景观”概念,将特定城市范围中主要固废处理设施集群的时空演变与再生作为研究对象;基于棕地再生的“压力—动力”驱动机制,通过对中国香港特别行政区当代固废处理设施体系的演变及其再生的案例研究,阐释其“城市固废景观”的再生机制。归纳其固废处理设施的三阶段演变历程与由聚集转向分散的空间格局变化特征;结合固废设施演变进程中垃圾填埋场集群向城市公共开放空间转型的特征、政府管理导向与政策计划解析,阐述推动其“城市固废景观”可持续演变的区域性机制。从城市角度认知与研究固废处理设施时空格局演变及其土地再生的新视角,旨在为当下中国城市塑造更加“生态-社会”双维度可持续的“城市固废景观”体系提供研究路径与政策参考。

With the urban expansion and population growth,the relationship between MSW disposal facilities and urban space in the contemporary urban context is getting closer,and conflicts are increasing.At the same time,the former disposal site has a high potential to be transformed into an urban open space.In view of this background,the concept of“Urban Solid Waste Landscape(USWL)”is articulated in which the spatial-temporal evolution and regeneration of major MSW disposal facility clusters in specific urban areas are taken as the key research objects.Based on the“pressure-driver”model of brownfield regeneration,this paper explains the regeneration mechanism of USWL in Hong Kong Special Administrative Region of China through a case study of its evolution and regeneration of the contemporary MSW disposal system.In this paper,a three-phase evolution of MSW disposal facilities and the change characteristics of aggregation-to-dispersion spatial patterns in Hong Kong are summarized.Meanwhile,based on the analysis of the characteristics,government management orientation,and policy plan of the transformation of Hong Kong’s landfill clusters into urban public open spaces during the evolution process of MSW disposal facilities,the regional mechanism to promote the sustainable evolution of USWL is expounded.This study provides a new perspective for understanding and studying the spatial-temporal pattern evolution of MSW disposal facilities and their land regeneration from an urban perspective,aiming at providing research paths and policy references for shaping a more ecologically and socially sustainable USWL in China.