Riding towards a sustainable future: an evaluation of bike sharing’s environmental benefits in Xiamen Island, China

Abstract

In the pursuit of sustainable urbanization, Bike-Sharing Services (BSS) emerge as a pivotal instrument for promoting green, low-carbon transit. While BSS is often commended for its environmental benefits, we offer a more nuanced analysis that elucidates previously neglected aspects. Through the Dominant Travel Distance Model (DTDM), we evaluate the potential of BSS to replace other transportation modes for specific journey based on travel distance. Utilizing multiscale geographically weighted regression (MGWR), we illuminate the relationship between BSS’s environmental benefits and built-environment attributes. The life cycle analysis (LCA) quantifies greenhouse gas (GHG) emissions from production to operation, providing a deeper understanding of BSS’s environmental benefits. Notably, our study focuses on Xiamen Island, a Chinese “Type II large-sized city” (1–3 million population), contrasting with the predominantly studied “super large-sized cities” (over 10 million population). Our findings highlight: (1) A single BSS trip in Xiamen Island reduces GHG emissions by an average of 19.97 g CO₂-eq, accumulating monthly savings of 144.477 t CO₂-eq. (2) Areas in the southwest, northeast, and southeast of Xiamen Island, characterized by high population densities, register significant BSS environmental benefits. (3) At a global level, the stepwise regression model identifies five key built environment factors influencing BSS’s GHG mitigation. (4) Regionally, MGWR enhances model precision, indicating that these five factors function at diverse spatial scales, affecting BSS’s environmental benefits variably.

Keywords

Greenhouse gases / Shared mobility / Carbon emission / Multiscale geographically weighted regression / Travel behavior / Urban mobility

Declaration of competing interests

The authors affirm that they have no known financial or interpersonal conflicts that would have seemed to influence the research presented in this study.

Acknowledgements

This research was funded by Guangdong Basic and Applied Basic Research Foundation (Grant No. 2023A1515011174), and the National Natural Science Foundation of China (Grant No. 42101351).

Supplementary materials

Supplementary material associated with this article can be found, in the online version, at doi:10.1016/j.geosus.2024.01.002.

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