Wang Dan-Yi, Li Yang, Hong Jingke
School of Management Science and Real Estate, Chongqing University, Chongqing, China.
School of Economics and Management, Tongji University, Shanghai, China; Research Institute of Engineering Science, China United Engineering Corporation Limited, Hangzhou, China.
J Environ Manage. 2025 Jan;373:123451. doi: 10.1016/j.jenvman.2024.123451. Epub 2024 Nov 29.
The construction sector, as the prime culprit that aggravates greenhouse gas emissions, has initiated transitions in construction methods for emissions abatement. In such a context, prefabricated construction has been widely promoted in developing countries. This paper assesses the effects of three environmental policies: carbon tax, green subsidy, and unit subsidy on carbon allocation and emissions abatement of prefabricated construction supply chain (PCSC) consisting of a prefab manufacturer (PM) and a project developer (PD). In our game model, the PD determines a prefabricated ratio, the ratio of prefabs to the total construction components, and purchases prefabs from the PM for assembly construction, which enables fewer emissions than on-site construction. We find that the carbon tax has a compound pass-through effect in PCSC, which imposes a quasi-subsidy effect on the PD, allowing the PM to achieve a prefab premium and thus inducing more intense double marginalization than that under the green subsidy. The unit subsidy holds a cost-compensating effect, which mitigates double marginalization arising from the spill-over effect of the green subsidy. Nevertheless, both subsidies lead to identical carbon allocation and emissions abatement of PCSC. The carbon tax outperforms subsidy policies in reducing total emissions and emission intensity, and is superior in responsibility-benefit balance in PCSC. Our study offers insights into the government's choice of environmental policies and the sustainable production decisions of PCSC members while, theoretically, contributing to the sustainable supply chain theory by revealing the impacts of environmental policies on the supply chain for transitional green products, such as PCSC.
建筑行业作为加剧温室气体排放的主要元凶，已开始转变施工方法以减少排放。在此背景下，装配式建筑在发展中国家得到了广泛推广。本文评估了三种环境政策——碳税、绿色补贴和单位补贴，对由预制构件制造商（PM）和项目开发商（PD）组成的装配式建筑供应链（PCSC）的碳分配和减排效果。在我们的博弈模型中，PD确定预制率（即预制构件与建筑总构件的比例），并从PM购买预制构件用于装配式建筑，相较于现场施工，这种方式能够减少排放。我们发现，碳税在PCSC中具有复合转嫁效应，这对PD施加了一种准补贴效应，使PM能够获得预制溢价，从而导致比绿色补贴下更严重的双重边际效应。单位补贴具有成本补偿效应，减轻了绿色补贴溢出效应所产生的双重边际效应。然而，两种补贴导致PCSC的碳分配和减排效果相同。碳税在降低总排放量和排放强度方面优于补贴政策，且在PCSC的责任-效益平衡方面更具优势。我们的研究为政府环境政策的选择以及PCSC成员的可持续生产决策提供了见解，同时在理论上通过揭示环境政策对装配式建筑供应链等过渡性绿色产品供应链的影响，为可持续供应链理论做出了贡献。
