« Previous AbstractThe Pheromone and Pheromone Receptor Mating-Type Locus Is Involved in Controlling Uniparental Mitochondrial Inheritance in Cryptococcus    Next AbstractZirconium-based metal-organic framework gels for selective luminescence sensing »

Environ Int

Title:		Vehicle emissions in a middle-sized city of China: Current status and future trends
Author(s):		Sun S; Jin J; Xia M; Liu Y; Gao M; Zou C; Wang T; Lin Y; Wu L; Mao H; Wang P;
Address:		"Center of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China. Department of Geography, Hong Kong Baptist University, Hong Kong 999077, China. Center of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China. Electronic address: hongjunm@nankai.edu.cn. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China. Electronic address: peng.ce.wang@polyu.edu.hk"
Journal Title:		Environ Int
Year:		2020
Volume:		20200205
Issue:
Page Number:		105514 -
DOI:		10.1016/j.envint.2020.105514
ISSN/ISBN:		1873-6750 (Electronic) 0160-4120 (Linking)
Abstract:		"Vehicle emissions are regarded as an important contributor to urban air pollution in China and most previous studies focused on megacities. However, the vehicle pollution in middle-sized cities becomes more severe due to the increasing vehicle population (VP) and lagged control policy. This study takes Langfang, a typical middle-sized city bordered by two megacities (Beijing and Tianjin), as the target domain to investigate vehicle emissions. The speed correction curves (SCC) are introduced to improve the vehicle emission factors (EF) simulation in official technical guidelines on emission inventory (GEI). A multi-year vehicle emission inventory (from 2011 to 2025) is developed in Langfang. From 2011 to 2017, the total vehicle emissions in Langfang decrease for carbon monoxide (CO), but increase for volatile organic compounds (VOCs), nitrogen oxides (NO(x)), and inhalable particles (PM(10)), respectively. From 2018 to 2025, the emissions would increase more rapidly in Langfang than in Beijing and Tianjin, indicating the middle-sized cities may become a significant contributor to air pollution in China. Four possible control policies, including VP constrained (VPC), public transportation promotion (PTP), new energy vehicles promotion (NEP), and freight transportation structure optimization (FTO) are evaluated. The most significant emissions reductions are observed under the FTO for CO, NO(x), and PM(10), and under the VPC for VOCs. The spatial distributions of vehicle emissions show a high order of heterogeneity, indicating that local conditions should be considered in policy formulation in addition to national consistency. More comprehensive policies should be implemented to mitigate the vehicle pollution in middle-sized cities"
Keywords:		*Air Pollutants *Air Pollution Beijing China Cities Environmental Monitoring *Vehicle Emissions/analysis Emission factors Emission inventory Policy evaluation Spatial distribution Vehicle emissions;
Notes:		"MedlineSun, Shida Jin, Jiaxin Xia, Men Liu, Yiming Gao, Meng Zou, Chao Wang, Ting Lin, Yingchao Wu, Lin Mao, Hongjun Wang, Peng eng Research Support, Non-U.S. Gov't Netherlands 2020/02/09 Environ Int. 2020 Apr; 137:105514. doi: 10.1016/j.envint.2020.105514. Epub 2020 Feb 5"