摘要
道路碳排放是交通碳排放的主要来源。传统研究多基于固定站点监测方法分析CO_(2)浓度,难以全面刻画道路碳排放时空分布,实现道路空间精细化治理。利用道路走航式监测,以广州中心城区内环路为例,选择三大典型时段(早高峰7:00-9:00、中午12:00-14:00、晚高峰17:00-19:00)采集道路CO_(2)浓度数据,并通过空间分析方法探索道路CO_(2)浓度的空间分布特征与时间变化趋势。结果表明:整体上道路CO_(2)浓度时间变化呈U型,早高峰道路CO_(2)平均质量浓度为1321.77 mg/m^(3),中午为1263.50 mg/m^(3),晚高峰为1356.04 mg/m^(3)。早晚高峰道路CO_(2)浓度呈现明显的空间特征,高浓度区主要分布在红绿灯周边、车流量大的交通枢纽,安装交通隔音板的道路;低浓度区主要集中在公园绿地等固碳能力强的区域。不同类型道路CO_(2)浓度存在明显差异,隧道与地面道路CO_(2)浓度较高,而高架道路CO_(2)浓度相对较低。可通过提高城市道路两侧绿植的覆盖率,利用先进的交通管理管控技术调整道路交通车流量提高道路通行效率等措施控制道路碳排放。
Road carbon emissions are the main contributors to transportation carbon emissions.Traditional research methods rely on fixed station monitoring to analyze CO_(2) concentration,which fails to comprehensively portray the spatial and temporal distribution of road carbon emissions and achieve spatial refinement in road management.This paper used mobile monitoring to collect road CO_(2) concentration data during three typical time periods(morning peak with 7:00-9:00,midday with 12:00-14:00,and evening peak with 17:00-19:00)on the inner ring road in Guangzhou’s central city zones,then analyzed the characteristics of the spatial distribution of road CO_(2) concentration and its temporal trend through spatial analysis.The results demonstrated that the overall road CO_(2) concentration exhibited a U-shaped trend,with morning peak having an average road CO_(2) mass concentration of 1321.77 mg/m^(3),midday being 1263.50 mg/m^(3),and evening peak being 1356.04 mg/m^(3).There was evident spatial characteristics in the concentration of road CO_(2) during peak hours.High concentrations mainly located around traffic lights,transportation hubs with high traffic flow,and roads with traffic sound insulation panels installed.Conversely,low concentrations were mainly concentrated in parks and green spaces with strong carbon sequestration capacity.Different types of roads exhibited significant differences in CO_(2) concentration,with tunnels and at-grade roads showing higher concentrations than elevated roads.To control road carbon emissions,attention should be paid to increasing the coverage of green plants on both sides of the urban road,utilizing advanced traffic management technology to adjust traffic flow and enhancing overall road traffic efficiency.
作者
吴海玲
吴旗韬
沈堪海
廖开怀
李苑君
WU Hailing;WU Qitao;SHEN Kanhai;LIAO Kaihuai;LI Yuanjun(Guangzhou Institute of Geography,Guangdong Academy of Sciences,Guangzhou Guangdong 510070;College of Architecture and Urban Planning,Guangdong University of Technology,Guangzhou Guangdong 510090;Guangdong Provincial Transportation Planning and Research Center,Guangzhou Guangdong 510101)
出处
《环境污染与防治》
北大核心
2025年第6期143-149,I0008,共8页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.42071165、No.42301200)
广东省科学院打造综合产业技术创新中心行动资金项目(No.2023GDASZH-2023010101)。
关键词
道路碳排放
走航式监测
时空分布特征
广州
road carbon emission
mobile monitoring method
characteristics of spatial and temporal distribution
Guangzhou
