1. Introduction
  1.1 Background and significance of the study
  1.2 Research objectives
  1.3 Research questions
  1.4 Methodology

2. Literature Review
  2.1 Definition and principles of agroforestry
  2.2 Benefits of agroforestry for small-scale farmers
  2.3 Challenges and barriers to agroforestry adoption
  2.4 Previous studies on sustainable agroforestry models for small-scale farmers

3. Methodology
  3.1 Research design
  3.2 Data collection methods
  3.3 Study area selection
  3.4 Data analysis techniques

4. Sustainable Agroforestry Models
  4.1 Alley cropping systems
  4.2 Silvopastoral systems
  4.3 Homegardens and backyard agroforestry
  4.4 Forest farming systems
  4.5 Multistrata agroforestry systems

5. Benefits and Challenges of Agroforestry for Small-Scale Farmers
  5.1 Increased agricultural productivity
  5.2 Soil health improvement
  5.3 Biodiversity conservation
  5.4 Climate change mitigation
  5.5 Economic and social benefits
  5.6 Challenges and barriers to adoption