Role of Urban Underground-Space Development in Achieving Carbon Neutrality:A National-Level Analysis in China  

作　　者：Jiajia Wang Huabo Duan Kunyang Chen Isabelle Y.S.Chan Fan Xue Ning Zhang Xiangsheng Chen Jian Zuo 

机构地区：[1]Department of Real Estate and Construction,Faculty of Architecture,The University of Hong Kong,Hong Kong 999077,China [2]School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430000,China [3]State Key Laboratory of Intelligent Geotechnics and Tunnelling,College of Civil and Transportation Engineering,Shenzhen University,Shenzhen 518000,China [4]Leibniz Institute of Ecological Urban and Regional Development,Dresden 01217,Germany [5]School of Architecture and Civil Engineering,The University of Adelaide,Adelaide,SA 5005,Australia

出　　处：《Engineering》2025年第2期212-221,共10页工程(英文)

基　　金：supported by the Shenzhen Science and Technology Plan(JCYJ20190808123013260).

摘　　要：Surface space constraints and the associated massive carbon emissions present significant challenges to the sustainable development of megacities.Urban underground space(UUS)construction is expected to provide a practical approach for alleviating the space constraints of surface construction.However,indepth examinations of the overall UUS system to reveal carbon emissions in the complex matrix are lacking.This study demonstrates the vital role of UUS development in achieving carbon neutrality using a streamlined life-cycle assessment method.Carbon emissions and the mitigation potential of building underground spaces,metro systems,and geothermal energy sources are analyzed.The construction of underground spaces in buildings is the largest carbon emitter within the entire UUS system,releasing a considerable 547.2 Mt in 2020.However,geothermal carbon sequestration,a significant element of the UUS system,provided an unexpected and impressive contribution,sequestering 170 Mt of carbon in 2020.This study shows that UUS addresses the lack of space for urban development and is a lowcarbon method of urban construction.Therefore,developing low-carbon building technologies and improving the UUS development model is imperative to achieving better low-carbon balance.This helps to promote more coordinated and sustainable urban development.

关 键 词：Urban underground space Carbon emissions Urban development Construction sector 

分 类 号：TU9[建筑科学] TU921