摘要
面对全球气候变化和区域性空气污染的双重压力,中国作为全球最大的二氧化碳(CO_(2))和大气汞排放国,亟需实现CO_(2)和大气汞的排放控制.考虑到CO_(2)和大气汞排放的潜在同源性,探究其内在的协同潜力、识别协同减排潜力较高的典型城市和行业能为我国新发展阶段减污降碳、协同增效提供重要支撑.鉴于此,本文以化石能源为切入点,通过编制我国城市层面CO_(2)和大气汞排放清单,构建2015年城市尺度多区域投入产出模型,并进一步采用相关系数评估生产端和消费端CO_(2)和大气汞的协同控制潜力.结果表明,生产端城市和部门层面CO_(2)和大气汞排放具有一定的协同控制潜力,其相关系数分别为0.836和0.799.其中,鄂尔多斯市等地的电力、热力的生产和供应业协同控制潜力良好.消费端城市和行业层面CO_(2)和大气汞排放具有较高的协同控制潜力,其相关系数分别为0.929和0.971.其中,重庆市等地的建筑业较为典型.区域间贸易相关的CO_(2)和大气汞排放净转移也存在协同特征,典型的净流入地经济相对发达,集中在消费端高排放的行业;典型的净流出地高耗能行业占比较高,集中在生产端高排放的行业.基于研究结果本文提出我国综合源头管控和终端消费引导的政策建议,以期实现CO_(2)和大气汞排放的协同控制.
Pressured by global climate change and local air pollution,China,as the world's largest emitter of carbon dioxide(CO_(2))and atmospheric mercury,urgently needs to curb its emissions.Given that CO_(2)and atmospheric mercury emissions often share the same anthropogenic source,exploring the potential of cities and industries to synergistically reduce the two emissions could boost China’s environmental regulation efficiency.Therefore,this paper constructs a city-level multi-regional input-output model by compiling the city-level inventory of CO_(2)and atmospheric mercury emissions from fossil fuels in China,and further assesses the potential to curb CO_(2)and atmospheric mercury simultaneously from both the production and consumption perspectives using correlation coefficients.Our results show that from the perspective of production,appropriate measures at the city and sector levels could synergistically curb CO_(2)and atmospheric mercury emissions,with the correlation coefficients being 0.836 and 0.799,respectively.We found that the production and supply of electricity and heat in Ordos and other cities have a particularly high potential for synergistic control.More opportunities for synergistically control CO_(2)and atmospheric mercury emissions can be found on the consumption side,with the correlation coefficients being 0.929 and 0.971,respectively.Typical examples appeared in the construction in Chongqing and other cities.The net transfers of CO_(2)and atmospheric mercury emissions embodied in trade have also shown co-control potentials.Most of the net inflow cities were relatively developed cities,and the key sectors were emission-intensive from the perspective of consumption;the net outflow regions were generally cities with high shares of energy-intensive sectors,and the key sectors were emission-intensive from the perspective of production.Finally,this paper proposed policy implications from both the production and consumption perspectives to help achieve the co-control of CO_(2)and atmospheric mercury emissions at the city level in China.
作者
汪峰
孙千惠
李佳硕
张伟
WANG Feng;SUN Qianhui;LI Jiashuo;ZHANG Wei(School of Business,Nanjing University of Information Science&Technology,Nanjing 210044;Institute of Climate Economy and Low-carbon Industry,Nanjing University of Information Science&Technology,Nanjing 210044;Development Institute of Jiangbei New Area,Nanjing University of Information Science&Technology,Nanjing 210044;Institute of Blue and Green Development,Shandong University,Weihai 264209;State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation,Chinese Academy of Environmental Planning,Beijing 100012;The Center for Beijing-Tianjin-Hebei Regional Environmental Planning and Ecology,Chinese Academy of Environmental Planning,Beijing 100012)
出处
《环境科学学报》
CAS
CSCD
北大核心
2023年第4期179-189,共11页
Acta Scientiae Circumstantiae
基金
国家自然科学基金资助项目(No.72074137,71904088)
江苏省自然科学基金青年项目(No.BK20190780)。
作者简介
汪峰(1988-),男,E-mail:003041@nuist.edu.cn;责任作者:张伟,E-mail:zhangwei@caep.org.cn。
