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Discrepancy and corruption of the Fiji Soil Map

Discrepancy and corruption of the Fiji Soil Map. Published on 30/04/2007. Structure. I ntroduction to Fiji soils 2. Corruption on soil map: 2.1 . loss of 4000 polygons 2.2 . shift in the lookup tables 2.3. Discrepancys in the Map Unit Code 2.4. LUC transfer problems.

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Discrepancy and corruption of the Fiji Soil Map

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  1. Discrepancy and corruption of the Fiji Soil Map Published on 30/04/2007

  2. Structure • Introduction to Fiji soils 2. Corruption on soil map:2.1. loss of 4000 polygons2.2. shift in the lookup tables 2.3.Discrepancys in the Map Unit Code 2.4. LUC transfer problems

  3. 1. Introduction to Fiji soils Fiji Soil Map is based on: Soil Taxonomic Unit Description Handbook (STUD’s 1998) LESLIE, D.M. (David Murdoch), 1940- Fiji : soil taxonomic unit description handbook / D.M. Leslie, V.B. Seru. - Lincoln, Canterbury: Manaaki Whenua Press. 1998.Volume 1 & 2: ~ 950 pages

  4. 1. Introduction to Fiji soils • Classifies 227 soils of Fiji • Each Soil has an Individual Soil Map Unit Code main characteristics: Range of Slopes, Moisture Regime, Temperature Regime (Altitude > 600m), Texture, Mineralogy Class, Landform, parent Rock, Drainage, Erosion Risk……. etc.

  5. 1. Introduction to Fiji soils Content: • Classification of the Soil Series of Fiji in different Systems • Flow-Diagram keys for the identification of Fiji Soil Series • Fiji Soil mapping units, land use capability classes and the main soil limitations • Land and Soil attributes significant for crop growth • Application of the fertility capability soil classification • Matching of soil attributes with crop requirements; soil suitability assessments

  6. Basically ~14000 polygonseach polygon has a individual map unit code  “newseries” 2. Corruption on soil map

  7. 2.1. loss of 4000 polygons Shapefile 24/02/1998 Shapefile 06/05/2008

  8. 2.2. shift in the lookup tables Datasource: Landuse capability (shapefile) 27/11/2007

  9. 2.3. Discrepancys in the Map Unit Code R Soils that should be absent on Viti Levu

  10. LUC transfer problems Example: Keiyasi soils (113)  113C+D are not present 1998: 2012: GIS-table (2008):

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