1. Figure 7.1. Map of the land cover of the Iztaccíhuatl and Popocatépetl vocanoes area.

2. Figure 7.2. Sampling points (right image) and validation points (left) in the Iztaccíhuatl and Popocatépetl volcanoes area.

3. Figure 7.3. NDVI image of the study area.

4. Figure 7.4. Diagram of the methodology.

5. Figure 7.5. Relation between biomass and NDVI.

6. Figure 7.6. Fish eye photos of forest canopies.

7. Figure 7.7. Relation between LAI from fisheye photo's and NDVI-values.

8. Figure 7.8. Fragmentation scenario. For legend see Figure 7.1.

9. low biomass high biomass Figure 7.9. Calculated biomass for the study area.

10. Figure 7.10. Results of the simulations (b- = base case; f- = fragmentation scenario).

11. Figure 7.11. Total difference in biomass between base case and fragmentation scenario.