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Outline

Outline . Project Overview Available Data Image Pre-processing and challenges Data Accuracy Forest Stratifications VANRIS New Vegetation Map (2011) Current Forest Cover Map (2013) Pending Activities. Project Overview.

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Outline

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  1. Outline • Project Overview • Available Data • Image Pre-processing and challenges • Data Accuracy • Forest Stratifications • VANRIS • New Vegetation Map (2011) • Current Forest Cover Map (2013) • Pending Activities

  2. Project Overview • SPC/GIZ Climate Protection through Forest Conservation in Pacific Island Countries Project >>Overall Objective: The conservation of forest ecosystems in the Pacific Island Countries is supported in order to mitigate climate change and preserve biodiversity. • Vanuatu to start implement it’s Readiness Preparation Proposal (R-PP) >> SPC/GIZ – development of system for MRV carbon level and REL >> FCPF of World Bank – policy process • Pilot national REDD+ mechanism on Santo Island

  3. PILOT ISLANDS The islands of Vanuatu are located approx. 2,200km east of Australia and comprises of 82 islands. The program is focusing on 4 pilot islands: Santo Malekula Efate Erromango

  4. PILOT ISLANDS

  5. Available Data

  6. WORLDVIEW-2 IMAGE DATA 11 Scenes total 8 Band Bundle Data Multispectral: 1.84 m Panchromatic: 0.46 m Level 2A Ortho Ready Standard Imagery Radiometrically corrected Sensor corrected Projected to a constant elevation No terrain correction

  7. Digital Surface Model (DSM) 5 m Resolution By-product of Ortho-rectified Radar Image (ORI) product. Used to derive the Coastline of Espiritu Santo The product was assumed to be produced by InterMap Solutions

  8. Image pre-processing Ortho-correction process: Normal Ortho-rectification with 5m DSM still vertical shifts were visible

  9. Application of Geoid

  10. Two Mapping Activities (Espiritu Santo): • Radar-based Deforestation Analysis (Jorg Seifert Granzin: Mesa Consultant [MRV]) • Carbon density map for 5 generic forest strata (medium height forest [open/closed], low forest [open/closed], mangroves) • Forest Cover map using VHR Imagery • Currently mapped using Object-Oriented Classification (Imagine Objective) • Dense Forest, Semi-Dense Forest, Scattered Forest, Mangrove, Coconut Palm

  11. Forest Stratification Forest Definition: “Minimum area of land of 0.81 hectare with tree crown cover (or equivalent stocking level) of more than 10 percent with trees with the potential to reach a minimum height of 3 meters at maturity in situ.“ Two Stratification Systems: • Vanuatu Resource Information Systems [VANRIS] (Bellamy 1993) • New Vegetation Strata which builds on VANRIS (Schweter 2011)

  12. 1.VANRIS (Bellamy 1993)

  13. 1.VANRIS (Bellamy 1993)

  14. 2. New Vegetation Map (Schweter 2011)

  15. Current Forest Mapping Activities @ SOPAC

  16. Overview of Processing Chain Land Cover Map (Imagine Objective) Image Data (WV-2) Produce Forest Mask (Spatial Modeler) Forest Classification (Stratified to 3 different densities) Area Calculation (Access Database)

  17. IMAGINE Objective Process Flow Chart Pixels Pixels ( training ) ( candidates ) Prob . Pixels Raster Object Pixel Raster Raster To To Pixel Cue Metrics Probability Object Object Raster Object Raster Object Laye Layer Layer Operator Operator Train Query Pixel Inference Engine Vector Object Raster Object Vector Vector To To Object Object Vector Object Vector Object Layer Layer Operator Operator Vector Vector Objects Objects ( training ) ( candidates ) Vector Object Vector Vector To Object Object Vector Object Layer Layer Operator Object Cue Metrics Train Query Object Inference Engine

  18. Interpretation of Forest Classes from Optical Data Dense Forest - Close Canopy Dense Forest - Open Canopy Scattered Forest Semi-Dense Forest - Open Canopy Semi-Dense Forest – Open Canopy Semi-Dense Forest – Close Canopy Mangrove

  19. Interpretation of Forest Classes from Optical Data Dense Forest - Close Canopy Dense Forest - Open Canopy Scattered Forest Coconut Semi-Dense Forest - Open Canopy Semi-Dense Forest – Open Canopy Semi-Dense Forest – Close Canopy Mangrove

  20. Stratum maybe subject to change after field verification and consultations with DoF

  21. Challenges and Pending Activities • Main challenges were: • Orthorectification • Solved with the application of the geiod model • IMAGINE Objective • Experimentation (time consuming) • Large scenes (time consuming) • Future Tasks: • Validation of Segmentation results with field data collection and accuracy assessment • Consultations with GIZ, DoF, and DoL on a Forest cover based on an approved national forest definition.

  22. References • Bellamy, Jennifer A. 1993. “Vanuatu Resource Information System. VANRIS Handbook”. CSIRO Brisbane. • Schweter, Martin. 2011. “Elaboration of a Vegetation and Land Cover Map of Vanuatu” Under the FAO Program ‘Strengthening of the Monitoring, Assessment and Reporting (MAR) on Sustainable Forest Management (SFM)’. Government of Vanuatu, Ministry of Agriculture, Quarantine, Forestry and Fisheries (MAQFF), Strengthening Monitoring, Assessment and Reporting (MAR) on Sustainable Forest Management (SFM) in Asia Project (GCP/INT/988/JPN) Vanuatu Department of Forest.” • Herold, Martin, Jacqueline Sambale, Martin Lindner, Marcel Urban, and Sean Weaver. 2007. “Satellite Based Monitoring of the National Forest Resources in the Pacific Island State of Vanuatu. Proceedings of the Tri-National Conference 2007 of the Swiss, Austrian and German Society for Photogrammetry and Remote Sensing, 19.-21.06.2007, Basel/ Switzerland, 319-328.” • Seifert-Granzin, Jörg. 2013. “SAR Based Un-calibrated Biomass Map of Espiritu Santo Island, Vanuatu. Processing Description and Results Version 1.0.” • Seifert-Granzin, Jörg. 2013. “GHG Inventory Design for Santo Island, Vanuatu Version 2.0”

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