CHENJu-xiang,LIGuo-rong,SUNLiang,et al.Evaluation of Carbon Emission Reduction Benefits from Sponge City Renovation of Old Residential Areas Using LCA-SD Model[J].China Water & Wastewater,2025,41(5):115-122.
Evaluation of Carbon Emission Reduction Benefits from Sponge City Renovation of Old Residential Areas Using LCA-SD Model
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第5期
Page:
115-122
Column:
Date of publication:
2025-03-01
- Keywords:
- carbon emission reduction accounting; old residential area; spongy city renovation; life cycle assessment (LCA) model; system dynamics (SD) model
- Abstract:
- The sponge city renovation of old residential areas constitutes a critical component of sponge city construction. Investigating the evaluation methodology for carbon emission reduction benefits and developing an accounting model for carbon emission reduction are essential for achieving carbon neutrality. In this study, the life cycle assessment (LCA) model and the system dynamics (SD) model based on the theory of LCA (LCA-SD), were developed to quantify carbon emission reduction and evaluate benefits during the sponge city renovation of old residential areas. The reliability of the LCA-SD model was validated using empirical data from a sponge city renovation project of an old residential area in W city. Additionally, the carbon emission reduction achieved through this project was quantified. Through the LCA model, it was determined that the construction phase of the renovation process for the old residential area generated the highest carbon emission, accounting for 48.8% of the project’s total carbon emission. The most significant carbon sink was associated with the rainwater purification stage. The LCA-SD model demonstrated reliable simulation capabilities, enabling accurate projections of carbon emission and carbon sink change resulting from sponge city renovation projects in old residential areas. In the LCA-SD model, the primary source of carbon sink originated from the urban green space carbon cycle system, which was projected to achieve carbon neutrality by 2039. Additionally, the carbon emission and carbon sink derived from the LCA-SD model were significantly higher than those obtained from the LCA model.
Last Update:
2025-03-01