4.7 Article

Consumption-based emissions at city level in China and the spatial heterogeneity analysis of the influential factors

Journal

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 30, Issue 11, Pages 28961-28974

Publisher

SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-24118-x

Keywords

Consumption-based emissions; Spatial heterogeneity; Geographically weighted regression (GWR); Multiregion input-output model (MRIO); Air pollutants

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Identifying critical influential factors of pollutant emissions is crucial for emission mitigation. This study reveals that consumption-based emissions are mainly driven by local demand and construction activities. Additionally, spatial variances in contributions of driving forces to consumption-based emissions are observed.
It is of great significance to identify the critical influential factors of pollutant emissions for emission mitigation. However, city disparity implies different priorities for regional mitigation. This study aims to estimate the consumption-based emissions of 309 prefecture-level cities in China based on the multi-region input-output table and the sectoral NOx emission inventory and investigate the emission transfer phenomenon among cities and sectors. In addition, a geographically weighted regression method is used to analyze the spatial heterogeneity in the driving factors of regional consumption-based emissions. The results reveal that the top 10 cities in consumption-based emissions account for 25.2% of emissions and contribute 22.6% to GDP. The consumption-based emissions are mainly driven by local demand (72.79%) at the regional level and by construction activities (94.43%) at the sectoral level. Besides, the results also show the spatial variances in contributions of driving forces to consumption-based emissions. Economic growth has been identified as the most important factor which promotes consumption-based emissions. However, disposable personal income, per capita road area, urbanization, and percentage of tertiary industry GDP are conducive to reduce consumption-based emissions in some cities of China. It could be concluded that policies without consideration of the emissions from a consumption perspective are difficult to achieve effective emission reduction.

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