Journal
JOURNAL OF CLEANER PRODUCTION
Volume 319, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2021.128649
Keywords
Air pollution; Road construction; Road length; Road width; Fixed effect model
Categories
Funding
- National Natural Science Foundation of China [72074186, 71673230, 71703120]
- National Social Science Foundation of China [18ZDA106]
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The study found that increasing road area helps alleviate air pollution, but the impact of road lengthening and widening varies in different regions. Road lengthening has a better effect on air quality in the eastern part of China, while road widening has a more significant improvement in the Central and Western regions.
Traffic-related air pollution has become an urgent problem in many developing countries with rapid industrialization and urbanization. Traffic infrastructure construction, especially road reconstruction, is a prominent instrument of improving the road capacity and then affecting air quality. We employ the road area as the proxy variable of road infrastructure construction and further divide the road reconstruction pattern into lengthening pattern and widening pattern, respectively to evaluate the impact on urban air quality. The empirical result shows that the coefficient of road infrastructure construction represented by the road area is between -0.0818 and -0.0905, which means increasing road area has an emission-alleviating effect on air pollution. Moreover, we also find that the effect of road lengthening on air quality is better than road widening in the eastern China, but the improvement of road widening in the Central and Western China is better than the road lengthening. The result provides a valuable reference for policy recommendations on urban road infrastructure planning to improve air quality.
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