Mangrove Development in Fiji from 1991 to 2007 Vilisi Tokalauvere SPC-SOPAC.

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Presentation transcript:

Mangrove Development in Fiji from 1991 to 2007 Vilisi Tokalauvere SPC-SOPAC

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Data Sources  Landsat Image 1991  FOCO 1991/2001  Landsat Image 2001  ALOS 2007 Visual Interpretation

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Description Database

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. MapInfo to ERDAS  Forest, Mangrove polygons exported (DXF) to ERDAS.  Add Projection.  Convert to raster.  Recode polygon values.  Add to forest cover layer.  Now all handled by ArcGIS (spatial analyst)

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Overlay Analysis 1:50,000

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Reducing to Mappable Area Size Clump Eliminate Cluster No ha All clusters < 1 hectare are joined with the next biggest neighbour class

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. 1Hectare Accumulation

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Output from Access Database IDHectareLegend R Stable Natural Forest 222,739Mangrove in 1991 and mangrove in ,791Natural forest in 1991 and natural forest in 2001 SUM52,530 2 Reforestation Natural Forest 7112Water body in 1991 and natural forest in Non forest in 1991 and natural forest in Water body in 1991 and mangrove in 2001 SUM378 3 Deforestation Natural Forest 25166Mangrove in 1991 and coconut cover in Natural forest in 1991 and coconut cover in Natural forest in 1991 and non forest in 2001

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Deforestation of Mangroves

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities.

Reforestation of Mangroves

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Results YEARVITI LEVU (ha) VANUA LEVU (ha) OUTER ISLANDS (ha) , , , 60018, , 60019,

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Vanua Levu Map_ID SUM O231,8601,9391,93677 O242,4152,4042,410-5 P P232,9962,8592, P243,0462, Q223,4083,4343,43225 Q Q R222,8601,1252, R232,7571,5761,579-1,178 R S S S S SUM21,56718,25019,764-1,804

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Rhyzophora Bruguiera Coconut

Apply geo-science and technology to realise new opportunities for improving the livelihoods of Pacific communities. Thanks ………