Assessing Urban Green Roofs' Impact on Biodiversity and Climate Change Mitigation in Megacities

1. Introduction 2. Urban Green Roofs: An Overview 2.1 Definition and Types 2.2 Historical Development 2.3 Current Trends in Megacities 3. Biodiversity in Urban Areas 3.1 Challenges for Urban Biodiversity 3.2 Importance of Green Roofs 3.3 Case Studies from Megacities 4. Climate Change Mitigation 4.1 Urban Heat Island Effect 4.2 Carbon Sequestration 4.3 Benefits to Air Quality 5. Methodologies for Assessing Impact 5.1 Quantitative vs Qualitative Approaches 5.2 Tools and Techniques 5.3 Limitations and Challenges 6. Green Roof Design and Biodiversity 6.1 Plant Selection Criteria 6.2 Structural Considerations 6.3 Maintenance and Monitoring 7. Policy and Governance 7.1 Regulatory Frameworks 7.2 Incentive Programs 7.3 International Comparisons 8. Future Directions and Recommendations 8.1 Innovations in Design 8.2 Enhancing Collaborative Efforts 8.3 Research Gaps and Opportunities