The Effect of Urban Shrinkage on Carbon Dioxide Emissions Efficiency in Northeast China

Climate change caused by CO emissions is a controversial topic in today's society; improving CO emission efficiency (CEE) is an important way to reduce carbon emissions. While studies have often focused on areas with high carbon and large economies, the areas with persistent contraction have be...

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Bibliographic Details
Published in:International journal of environmental research and public health 2022-05, Vol.19 (9), p.5772
Main Authors: Zeng, Tianyi, Jin, Hong, Geng, Zhifei, Kang, Zihang, Zhang, Zichen
Format: Article
Language:English
Subjects:
Capital stock
Carbon dioxide
Cities
Climate change
Economic activity
Economic development
Electricity
Emission measurements
Emissions
Energy consumption
Energy efficiency
Fossil fuels
Indicators
Industrial plant emissions
Population growth
Provinces
R&D
Regions
Research & development
Urban areas
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Summary:Climate change caused by CO emissions is a controversial topic in today's society; improving CO emission efficiency (CEE) is an important way to reduce carbon emissions. While studies have often focused on areas with high carbon and large economies, the areas with persistent contraction have been neglected. These regions do not have high carbon emissions, but are facing a continuous decline in energy efficiency; therefore, it is of great relevance to explore the impact and mechanisms of CO emission efficiency in shrinking areas or shrinking cities. This paper uses a super-efficiency slacks-based measure (SBM) model to measure the CO emission efficiency and potential CO emission reduction (PCR) of 33 prefecture-level cities in northeast China from 2006 to 2019. For the first time, a Tobit model is used to analyze the factors influencing CEE, using the level of urban shrinkage as the core variable, with socio-economic indicators and urban construction indicators as control variables, while the mediating effect model is applied to identify the transmission mechanism of urban shrinkage. The results show that the CEE index of cities in northeast China is decreasing by 1.75% per annum. For every 1% increase in urban shrinkage, CEE decreased by approximately 2.1458%, with urban shrinkage, industrial structure, and expansion intensity index (EII) being the main factors influencing CEE. At the same time, urban shrinkage has a further dampening effect on CEE by reducing research and development expenditure (R&D) and urban compactness (COMP), with each 1% increase in urban shrinkage reducing R&D and COMP by approximately 0.534% and 1.233%, respectively. This can be improved by making full use of the available built-up space, increasing urban density, and promoting investment in research.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph19095772