Taoyu Chen , Yantong Li , Yi Zhang , Hexu Ji , Xinyu Wang , Junjun He , Qunyue Liu , He Zhang
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引用次数: 0
Abstract
Photovoltaic–Green Roof (PV-GR) systems, integrating clean energy production with ecological greening, represent an emerging form of three-dimensional greening with substantial potential to promote urban sustainability. However, most existing studies focus on isolated benefits, without a comprehensive assessment framework or consideration of future pathways. Consequently, the sustainable development potential of PV-GR systems remains insufficiently explored. To address this gap, we propose a scalable and replicable integrated evaluation framework to assess the sustainable development potential of PV-GR systems. The framework incorporates rooftop suitability identification, Area Solar Radiation, the Denitrification–Decomposition model, multidimensional SDG indicator quantification, and multi-scenario dynamic simulation. Using the high-density urban core within Fuzhou’s Third Ring Road as a case study, we identified approximately 975.23 hectares of potentially suitable rooftop space. Under full deployment, PV-GR systems could annually generate 5936 GWh of electricity, reduce carbon emissions by 4.118×106 t CO2, and generate 1.079×106 kg C yr⁻¹ of green biomass. Additionally, the PV-GR could create 75,092 jobs, deliver 2.401×109 CNY in economic returns, and retain 5.013×106 m3 of rainwater annually. Two future scenarios were simulated: S1 Photovoltaic–Green Roof Synergy Scenario and S2 Policy Incentive Scenario. Vegetation was found to enhance photovoltaic efficiency, leading to steady increases in electricity generation and carbon reduction—by up to 20.37 % and 6.7 %, respectively. Moreover, policy incentives significantly amplified system benefits. The findings reveal the sustainable development potential of PV-GR systems and offer a scalable and replicable framework to support the deployment of three-dimensional greening and the formulation of sustainable urban policies.
期刊介绍:
Sustainable Cities and Society (SCS) is an international journal that focuses on fundamental and applied research to promote environmentally sustainable and socially resilient cities. The journal welcomes cross-cutting, multi-disciplinary research in various areas, including:
1. Smart cities and resilient environments;
2. Alternative/clean energy sources, energy distribution, distributed energy generation, and energy demand reduction/management;
3. Monitoring and improving air quality in built environment and cities (e.g., healthy built environment and air quality management);
4. Energy efficient, low/zero carbon, and green buildings/communities;
5. Climate change mitigation and adaptation in urban environments;
6. Green infrastructure and BMPs;
7. Environmental Footprint accounting and management;
8. Urban agriculture and forestry;
9. ICT, smart grid and intelligent infrastructure;
10. Urban design/planning, regulations, legislation, certification, economics, and policy;
11. Social aspects, impacts and resiliency of cities;
12. Behavior monitoring, analysis and change within urban communities;
13. Health monitoring and improvement;
14. Nexus issues related to sustainable cities and societies;
15. Smart city governance;
16. Decision Support Systems for trade-off and uncertainty analysis for improved management of cities and society;
17. Big data, machine learning, and artificial intelligence applications and case studies;
18. Critical infrastructure protection, including security, privacy, forensics, and reliability issues of cyber-physical systems.
19. Water footprint reduction and urban water distribution, harvesting, treatment, reuse and management;
20. Waste reduction and recycling;
21. Wastewater collection, treatment and recycling;
22. Smart, clean and healthy transportation systems and infrastructure;