Mapping Forest Loss and Degradation Using Satellite Imagery
- 1. Mapping forest loss & degradation using satellite imagery Paul Gager Technical Director 1
- 2. Drivers of Deforestation and Degradation Logging (Mechanized) Agro-Forestry Plantations Infrastructure and Land Development Logging (Artisanal/RIL – reduced impact logging) Swidden Agriculture Wildfires 2
- 3. Why monitor ? • • • • Land use management Protected area management Forest resource management Forest Carbon assessment 3
- 4. Platforms – UAV • User can own the system – Coverage of large areas difficult – Operational expenses; vehicles, staff, spare parts – Need to train and manage skilled staff 4
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- 6. Platforms – VHR Satellite Imagery • Very High Resolution Satellite Imagery – Very effective, but high cost – Some expertise required to process 6
- 7. Platforms- Mid resolution satellite • Good trade off between cost and coverage • Can detect changes in canopy, construction of roads, skid trails • May not identify individual tree loss 7
- 8. RapidEye – 5m pixels 8
- 10. Mid res compared to Aerial Photo 10
- 11. Platforms – Low and Mid-res • Often free or very low cost • Mainly useful for land conversion mapping or mapping very large areas 11
- 13. Manual Approaches: Inconsistent Mapping Between Years 13
- 15. Segmentation and Classification Original Image Image Objects 15 Classified Image
- 18. Mapping Change Year 1 Year 2 18 Change Image
- 21. Questions ? 21