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原文传递 Acute Challenges and Solutions for Urban Forestry in Compact and Densifying Cities

题名：	Acute Challenges and Solutions for Urban Forestry in Compact and Densifying Cities
其他题名：	Alvey,A.A.2006."Promoting and preserving biodiversity in the urban forest."Urban For.Urban Greening 5(4):195-201.https://doi.org/10.1016/j.ufug.2006.09.003.
正文语种：	英文
作者：	C. Y. Jim
关键词：	Primary and secondary compact city;In situ and ex situ densification;Green-space infilling;Urban rarefaction;Precision social planning;Nature-based solution
摘要：	Many cities are becoming increasingly dense, bringing more impervious surface and less vegetation-growing space. Dense urban environments demand ecosystem services of urban trees, yet growth conditions are difficult. Innovative planning and management could permit coexistence of urban fabric and nature. This study reviews three groups of constraints to urban forestry in dense areas: (1) spatialsubaerial, (2) subterranean-root, and (3) institutional and social. Integrated proposals are developed to overcome the constraints and optimize the provision and benefits of urban forests despite the stresses. They are based on a typology of compact-city types and tripartite classification of urban land covers. Embracing the landscape-ecological and institutional-social dimensions, they refer to both primary and secondary compact cities. The quality and coverage of urban forests could be improved by pragmatic, actionable and tailor-made solutions. Precision green-space planning for in situ and ex situ densification could tackle the multiple and intractable limitations and prepare redevelopment and new development areas for greenery preservation and installation. Urban forestry could better integrate urban form and density with comprehensive spatial, temporal, and institutional visions.
出版年：	2018
论文唯一标识：	P-84Y2018V144N03008
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/(ASCE)UP.1943-5444.0000466
期刊名称：	Journal of Urban Planning and Development
拼音刊名(出版物代码)：	P-84
卷：	144
期：	03
页码：	78-89