Rapid urban expansion and population increase have imposed significant pressure on the natural and cultural environment. Green infrastructure analysis can be a useful approach to identify, strategies to reduce urban environmental problems. This paper, from a multi~scale perspective, reevaluates the green spaces and proposes strategies to unite them into a holistic green infrastructure system. Prom a macro perspective, the generously protected areas, serve as the main structure of the system. From a micro perspective, urban greenery-increase strategies and reduction of urban fragmentation are crucial in reducing urban environmental problems. With landscape metrics and GIS analysis, this paper reevaluates the Green Master Plan in Hong Kong and discusses the strategies of green space management, which could be a reference for the green infrastructure development in other compact Asian cities.%快速的城市扩张和人口增长给自然和人文环境带来了巨大的压力。绿色基础设施分析能成为有效的途径，帮助发现并缓解城市环境问题。从一个多尺度的视角，重估绿地并提出策略，将其整合成一个整体的绿色基础设施体系。宏观上，将自然保护区作为绿地系统的主要结构；微观上，减小城区绿地的破碎度。利用景观指数结合GIS的分析方法，重估香港的绿化总纲图，并分析香港在绿地管理上的策略，为其它高密度亚洲城市绿色基础设施的发展提供参考。
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