The spatiotemporal heterogeneity in the impact of waterway transportation on fine particulate matter (PM2.5) concentration: evidence from 25 Chinese provinces using a GTWR approach.
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引用次数: 0
Abstract
This paper constructs an environmental impact model of Fine Particulate Matter (PM2.5) concentration using the STIRPAT analysis framework and empirically tests the impact of waterway transport on PM2.5 concentration and its spatiotemporal heterogeneity based on provincial panel data in China from 1998 to 2019 using the Geographically and Temporally Weighted Regression (GTWR) model. The empirical results show: (1) The GTWR model, which considers spatiotemporal factors, outperforms the global regression (OLS) model in terms of fitting effects; (2) The impact of waterway transport on PM2.5 concentration exhibits both positive and negative effects. Specifically, the positive effect of waterway goods transport on PM2.5 concentration is significant, while the negative effect of waterway passenger transport is significant, and the two present an approximate substitution pattern in spatial distribution; (3) The effects of various influencing variables on PM2.5 concentration all exhibit positive and negative effects as well as varying degrees of fluctuation, and they display significant spatiotemporal heterogeneity. From a temporal perspective, different influencing factors show certain evolutionary trends, while from a spatial perspective, the differences in influencing factors between regions are significant. These findings not only provide empirical support for regionally differentiated PM2.5 control strategies in China but also offer valuable insights for other developing countries facing trade-offs between transportation development and air quality. The study contributes to the global discussion on sustainable transportation planning and environmental governance by highlighting the nuanced roles of freight and passenger transport in pollution outcomes. Based on the empirical conclusions, this paper proposes related policy recommendations for controlling PM2.5 emissions.
期刊介绍：
Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people.
Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes.
The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.
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