Kaicheng Shen

Emission trading scheme (ETS) promotes carbon emission reductions by leveraging market incentives for enterprises. However, the lack of enthusiasm among enterprises in China’s building carbon emission trading market signals some deficiencies in its incentive mechanism. This study establishes an evolutionary game model involving three parties, including the government and heterogeneous enterprises, to explore the behavioral evolution process of multiple game players and improve the incentive mechanism for carbon emission reduction. The results demonstrate that the development path of enterprises’ participation in the emission trading market undergoes four evolutionary stages: the initial stage, the transitional stage, the growth stage and the mature stage. Also, the results of sensitivity analysis demonstrate that (1) rewards and penalties are the tools for government regulation and market incentives; (2) enterprises are not very enthusiastic about participating in carbon trading activities and adopting carbon-reduction technologies; (3) the rise in carbon quota trading prices can prompt enterprises to actively reduce carbon emissions. Based on the results, this study proposes an executable implementation framework for the carbon-reduction incentive mechanism of public buildings under ETS, providing practical guidance for local governments to formulate and implement targeted carbon-reduction policies, aiming to boost the enthusiasm of building enterprises for low-carbon behaviors and decision-making choices.

As the global urbanization process continues to accelerate the implementation of the “dual carbon” strategy, urban underground pipelines, as important infrastructure and urban lifelines, have generated significant resource consumption and ecological environmental impacts throughout their entire life cycle. This paper is based on lifecycle assessment (LCA) theoretical framework and systematically defines the scope of lifecycle assessment for underground pipeline projects, covering the stages of raw material production and processing, raw material transportation, construction, operation and maintenance, and disposal. Then, a comprehensive lifecycle inventory database has been established through inventory analysis. A lifecycle environmental impact assessment model for underground pipeline projects has been developed utilizing categorization, characterization, standardization, and weight determination, enabling quantitative evaluation of environmental impacts at each stage. At last, an urban underground pipeline project was selected as a case and the emission inventory data were integrated with the environmental impact assessment model to conduct a systematic analysis across all the lifecycle stages. The results indicate that the photochemical ozone creation potential (POCP), atmospheric particulate matters potential (APMP), and solid waste potential (SWP) have the most significant environmental impacts, and the total environmental impact values are 70, 104 and 83.9 capita equivalent, respectively. Moreover, the raw material production and processing, operation and maintenance, and construction stages are identified as the primary contributors to these environmental impacts, and the values are 17.5, 10.6 and 1.8 capita equivalent, respectively. Based on these findings, targeted improvement measures have been proposed for each stage, providing valuable references for optimizing engineering practices.

In the face of evolving digital technologies, all industries have undergone radical changes. Similarly, the construction industry needs to apply digital technology to improve the existing Supply Chain (SC), which has problems such as the inefficient collaboration among various links, the poor ability to cope with risks, the higher costs, the waste of resources and pollution, etc., and to adapt to the development of the digital era. Prefabricated Construction (PC), with their advantages of having a high efficiency and being energy-saving, can help improve the above problems and promote the sustainable development of the construction industry. Therefore, this review uses a combination of scientific bibliometrics and a qualitative analysis to search a total of 129 works of literature on the application of digital technologies in Prefabricated Construction Supply Chain Management (PCSCM) for the period of 2015–2024 included in the Web of Science, Scopus, and PubMed databases. After visualization and analysis in Citespace v6.3.1.0 and VOSviewer v1.6.20.0, it was found that most of the literature focuses on the economic benefits of cost reduction and efficiency, while there are fewer studies on the topic of sustainable development. Therefore, this study summarizes the current status of the application of digital technologies in PCSCM, addressing the lack of attention to environmental benefits in the existing studies and the limitations of the current research. Creatively, it proposes recommendations that will help PCSCM achieve sustainable development in the future, and points out that the construction industry must break through the limitation of focusing only on its own economic interests to realize the vision of a harmonious coexistence between human beings and nature.