Impact of Urbanization on Native Plant Species Diversity in Metropolitan Areas

1. Introduction 2. Urbanization and its Effects 2.1 Definition of Urbanization 2.2 Historical Trends of Urban Growth 2.3 Urbanization in Metropolitan Areas 3. Native Plant Species Diversity 3.1 Definition of Native Plant Species 3.2 Importance of Plant Diversity 3.3 Indicators of Biodiversity Changes 4. Mechanisms of Impact 4.1 Habitat Destruction and Fragmentation 4.2 Pollution and Chemical Exposure 4.3 Introduction of Invasive Species 5. Case Studies and Research 5.1 Analysis of Metropolitan Areas 5.2 Comparative Approaches in Different Cities 5.3 Longitudinal Studies and Data 6. Mitigation and Conservation Strategies 6.1 Urban Planning and Green Spaces 6.2 Restoration of Native Plant Habitats 6.3 Legislation and Policy Measures 7. Challenges in Implementation 7.1 Economic and Social Constraints 7.2 Coordination among Stakeholders 7.3 Monitoring and Evaluation 8. Conclusion and Future Directions 8.1 Summary of Findings 8.2 Implications for Urban Planning 8.3 Areas for Further Research