Abstract
Controlling and mitigating CO2 emissions is a challenge for the global environment. Furthermore, transportation is one of the major sources of energy consumption and air pollution emissions. For this reason, this paper estimated CO2 emissions by the bottom-up method, and presented spatiotemporal patterns by spatial autocorrelation methods from transportation during the period 2006 to 2016. It further analyzed the impact factors of CO2 emissions in the Pearl River Delta by the Logarithmic Mean Divisa Index (LMDI)decomposition method. The results indicated that from 2006 to 2016, total CO2 emissions increased year by year. Guangzhou and Shenzhen were the major contributors to regional transportation CO2 emissions. From the perspective of different transport modes, intercity passenger transport and freight transport have always been dominant in the past 11 years. The results indicated that aviation transport was the largest contributor, and that travel by road was the second one. The CO2 emissions generated by rail and water transport were much lower than those from aviation. Private cars became the main source of urban passenger transport CO2 emissions, and their advantages kept increasing. The results indicated that the spatial agglomeration trend feature was negatively correlated, and the further the distance, the more similar the attributes. The cumulative contribution values of population, economic development, transport intensity, energy intensity and energy structure were all positive values, while the cumulative contribution values of transport structure and emission factor were negative. The findings of this study offer help for the scientific understanding of those CO2 emissions from transportation, and for adopting effective measures to reduce CO2 emissions and for the development of green transportation.
Highlights
Greenhouse gases such as CO2 will cause global warming and pose a serious issue to sustainable development
In the transport sector, in China, sector, in China, few studies considered urban passenger transport when calculating CO2 emissions few studies considered urban passenger transport when calculating CO2 emissions because of the because of the limitation of statistics scale, that urban passenger transport is not included in the limitation of statistics scale, that urban passenger transport is not included in the statistics of passenger statistics of passenger transport volume, and is usually neglected [24]
Delta from 2006 to 2016.The total CO2 emissions maintained a remarkable growth from 43.98 million tons in 2006 to 117.16 million tons in 2016
Summary
Greenhouse gases such as CO2 will cause global warming and pose a serious issue to sustainable development. Transportation, as a key industry of energy consumption, contributes markedly to the sources of greenhouse gas and air pollution emissions [1]. Since the beginning of the 21st century, Asia has been the major source of CO2 emissions from fuel combustion. In 2016, it reached 17.4 Gt CO2 emissions, twice as much as the Americas, and three times as much as Europe [2]. In 2016, China accounted for 52% of emissions in Asia, followed by India, which accounted for 12%. In 2016, transport-generated CO2 emissions reached 7.87 Gt, with a share of 27%, which is 71%
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