Liu Wei, Chen Jun, Li Haotian, Zhu Shuguang, Duan Zheng
Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, China.
School of Environmental and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China.
Water Sci Technol. 2025 Apr;91(8):923-945. doi: 10.2166/wst.2025.046. Epub 2025 Apr 2.
This study aimed to quantify the impact of sponge city facilities on both runoff reduction and carbon emission mitigation, providing valuable insights for sustainable urban development. Using the Storm Water Management Model (SWMM) 5.2 in conjunction with carbon emission factor calculations, we comparatively evaluated the annual runoff reduction and carbon emission abatement potential of traditional drainage systems versus those incorporating sponge city facilities. Our results showed that the implementation of sponge city facilities resulted in a substantial decrease in runoff volume (100,840 m), and a corresponding reduction in carbon emissions (7,089.85 kg CO eq) compared to the pre-renovation conditions. Additionally, this work assessed five sponge city facilities: green roofs, permeable pavements, sunken green spaces, rain gardens, and overflow storage ponds. Among these, overflow storage ponds demonstrated the highest efficiency in both runoff reduction (35,879 m) and carbon emission mitigation (2,522.57 kg CO eq). Rain gardens showed the second-best performance, while sunken green spaces had the least impact. Our study provides a novel technical framework for quantifying and evaluating carbon emissions in urban drainage systems. Our findings offer reliable data support for urban planners and policymakers, contributing to evidence-based decision-making in the design and implementation of sponge city projects.
本研究旨在量化海绵城市设施对径流减少和碳排放缓解的影响，为可持续城市发展提供有价值的见解。通过使用暴雨洪水管理模型（SWMM）5.2并结合碳排放因子计算，我们比较评估了传统排水系统与纳入海绵城市设施的排水系统的年径流减少量和碳减排潜力。我们的结果表明，与改造前的情况相比，海绵城市设施的实施使径流量大幅减少（100,840立方米），碳排放量相应减少（7,089.85千克二氧化碳当量）。此外，这项工作评估了五种海绵城市设施：绿色屋顶、透水路面、下沉式绿地、雨水花园和溢流储存池。其中，溢流储存池在径流减少（35,879立方米）和碳排放缓解（2,522.57千克二氧化碳当量）方面均表现出最高效率。雨水花园表现次之，而下沉式绿地的影响最小。我们的研究提供了一个用于量化和评估城市排水系统碳排放的新颖技术框架。我们的研究结果为城市规划者和政策制定者提供了可靠的数据支持，有助于在海绵城市项目的设计和实施中进行基于证据的决策。
