摘要
城市作为人类活动的主要集中地,城市CO_(2)排放占比约全球的75%。公园城市追求“人-自然-城市”全生态的协调发展,以此实现城市可持续发展和人的全面发展。城市减碳措施可大致分为六类,其中绿地碳汇是目前效益较高的一类。回顾成都市近五年建成区绿地面积,并根据碳汇理论粗略计算出绿地每年CO_(2)吸收量与固碳量,绿地CO_(2)吸收量从2018年的2483.03万t增长到2022年的2954.69万t;绿地CO_(2)固碳量从2018年的582.64万t增长到2022年的711.64万t。同时以2019年为例,城市建成区绿地吸收CO_(2)年排放量的41.58%,固碳以及碳汇可以占CO_(2)年排放量的9.74%。公园城市发展理念对减碳效益有着显著影响。
As the main concentration of human activities,cities account for about 75% of the global sources of CO_(2) emissions.Park cities pursue the coordinated development of the entire ecosystem of"human-nature-city",in order to achieve sustainable urban development and comprehensive human development.Urban carbon reduction measures can be roughly divided into six categories,among which green space carbon sinks are currently the one with higher benefits.Reviewing the green space area in the built-up areas of Chengdu in the past five years,and roughly calculating the annual CO_(2) absorption and carbon sequestration of green spaces based on carbon sink theory,the CO_(2) absorption of green spaces increased from 24.8303 million tons in 2018 to 29.5469 million tons in 2022;The carbon sequestration of CO_(2) in green spaces increased from 5.8264 million tons in 2018 to 7.1164 million tons in 2022.Taking 2019 as an example,green spaces in urban built-up areas absorb 41.58%of annual CO_(2) emissions,while carbon sequestration and carbon sequestration can account for 9.74%of annual CO_(2) emissions.The development concept of park cities has a significant impact on carbon reduction benefits.
作者
王滔
赵磊
Wang Tao;Zhao Lei(College of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610059,Sichuan,China)
出处
《绿色科技》
2024年第11期43-47,共5页
Journal of Green Science and Technology
关键词
公园城市
碳汇
减碳效益
碳排放权
park city
carbon sink
carbon reduction benefits
carbon emission rights
