Xiaoyi Liu, Zhongnan Ye, Shu-Chien Hsu, Chi-Sun Poon
{"title":"建筑环境存量中二次资源的回收潜力:以香港公共租赁房屋为例","authors":"Xiaoyi Liu, Zhongnan Ye, Shu-Chien Hsu, Chi-Sun Poon","doi":"10.1111/jiec.70063","DOIUrl":null,"url":null,"abstract":"<p>In urban environments, region-specific knowledge of building material intensities and stocks is vital for efficient resource recovery in the construction sector, especially for city regeneration and redevelopment. Previous studies often relied on generalized data, leading to inaccuracies due to local variations in construction practices, materials, and urban density. This study addresses these limitations by developing a locally refined inventory through a GIS-based, bottom-up material stock analysis that integrates archetype-specific building design data, demonstrated with evidence from Hong Kong's public rental housing (PRH). The results show that material intensities for Hong Kong PRH buildings range from 1567 to 2386 kg/m<sup>2</sup>, with a total stock of 60.85 megatons as of 2022. Up to 46.95 megatons may have recycling potential over the next three decades, offering significant opportunities for sustainable resource management. Spatiotemporal and hotspot identification reveals a shift in material stock distribution toward the northern territories, reflecting urban development trends. This research enhances the accuracy of material stock assessments and supports strategic planning for achieving a circular economy, particularly in densely populated areas like Hong Kong. By promoting circular and generative city concepts and establishing benchmark archives for key construction materials, the study advances practical applications for sustainable urban resource management, aiding policy development for efficient spatial planning and urban mining strategies.</p>","PeriodicalId":16050,"journal":{"name":"Journal of Industrial Ecology","volume":"29 4","pages":"1382-1396"},"PeriodicalIF":5.4000,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jiec.70063","citationCount":"0","resultStr":"{\"title\":\"Recycling potential of secondary resources in built environment stocks: Evidence from Hong Kong public rental housing\",\"authors\":\"Xiaoyi Liu, Zhongnan Ye, Shu-Chien Hsu, Chi-Sun Poon\",\"doi\":\"10.1111/jiec.70063\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In urban environments, region-specific knowledge of building material intensities and stocks is vital for efficient resource recovery in the construction sector, especially for city regeneration and redevelopment. Previous studies often relied on generalized data, leading to inaccuracies due to local variations in construction practices, materials, and urban density. This study addresses these limitations by developing a locally refined inventory through a GIS-based, bottom-up material stock analysis that integrates archetype-specific building design data, demonstrated with evidence from Hong Kong's public rental housing (PRH). The results show that material intensities for Hong Kong PRH buildings range from 1567 to 2386 kg/m<sup>2</sup>, with a total stock of 60.85 megatons as of 2022. Up to 46.95 megatons may have recycling potential over the next three decades, offering significant opportunities for sustainable resource management. Spatiotemporal and hotspot identification reveals a shift in material stock distribution toward the northern territories, reflecting urban development trends. This research enhances the accuracy of material stock assessments and supports strategic planning for achieving a circular economy, particularly in densely populated areas like Hong Kong. By promoting circular and generative city concepts and establishing benchmark archives for key construction materials, the study advances practical applications for sustainable urban resource management, aiding policy development for efficient spatial planning and urban mining strategies.</p>\",\"PeriodicalId\":16050,\"journal\":{\"name\":\"Journal of Industrial Ecology\",\"volume\":\"29 4\",\"pages\":\"1382-1396\"},\"PeriodicalIF\":5.4000,\"publicationDate\":\"2025-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jiec.70063\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Industrial Ecology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/jiec.70063\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Industrial Ecology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jiec.70063","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Recycling potential of secondary resources in built environment stocks: Evidence from Hong Kong public rental housing
In urban environments, region-specific knowledge of building material intensities and stocks is vital for efficient resource recovery in the construction sector, especially for city regeneration and redevelopment. Previous studies often relied on generalized data, leading to inaccuracies due to local variations in construction practices, materials, and urban density. This study addresses these limitations by developing a locally refined inventory through a GIS-based, bottom-up material stock analysis that integrates archetype-specific building design data, demonstrated with evidence from Hong Kong's public rental housing (PRH). The results show that material intensities for Hong Kong PRH buildings range from 1567 to 2386 kg/m2, with a total stock of 60.85 megatons as of 2022. Up to 46.95 megatons may have recycling potential over the next three decades, offering significant opportunities for sustainable resource management. Spatiotemporal and hotspot identification reveals a shift in material stock distribution toward the northern territories, reflecting urban development trends. This research enhances the accuracy of material stock assessments and supports strategic planning for achieving a circular economy, particularly in densely populated areas like Hong Kong. By promoting circular and generative city concepts and establishing benchmark archives for key construction materials, the study advances practical applications for sustainable urban resource management, aiding policy development for efficient spatial planning and urban mining strategies.
期刊介绍:
The Journal of Industrial Ecology addresses a series of related topics:
material and energy flows studies (''industrial metabolism'')
technological change
dematerialization and decarbonization
life cycle planning, design and assessment
design for the environment
extended producer responsibility (''product stewardship'')
eco-industrial parks (''industrial symbiosis'')
product-oriented environmental policy
eco-efficiency
Journal of Industrial Ecology is open to and encourages submissions that are interdisciplinary in approach. In addition to more formal academic papers, the journal seeks to provide a forum for continuing exchange of information and opinions through contributions from scholars, environmental managers, policymakers, advocates and others involved in environmental science, management and policy.