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National Geo-spatial Information

National Geo-spatial Information. Aslam Parker. Applicable Legislation:. NGI in existence since 1920 Land Survey Act, 1997 (Act 8 of 1997) Sec 3A – duties of Chief Director SA Geographic Names Council CD: NGI is a permanent member Spatial Data Infrastructure Act, 2003 (Act 54 of 2003)

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National Geo-spatial Information

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  1. National Geo-spatial Information Aslam Parker

  2. Applicable Legislation: • NGI in existence since 1920 • Land Survey Act, 1997 (Act 8 of 1997) • Sec 3A – duties of Chief Director • SA Geographic Names Council • CD: NGI is a permanent member • Spatial Data Infrastructure Act, 2003 (Act 54 of 2003) • Besides cadastral data, NGI is by far the largest collector and custodian of spatial information in SA

  3. NGI: Key Products and Services • National Geodetic and Control Survey Services • National Aerial Photography and Imagery • National Maps and Geo-Spatial Information • Implement South African Spatial Data Infrastructure • Professional and Advisory Services

  4. 2. National Imagery Acquisition Programme • Since 2008, all imagery acquired will be multispectral (Pan, R,G,B and NIR)

  5. 3. National Mapping & Geo-spatial Information Programme (Land Cover) • Drivers behind the need for land-cover • Significant number of legislative (and some voluntary) requirements that need land-cover as either direct or indirect inputs to support reporting requirements on a regular basis. • eg NEMBA), NEMA, National Water Act Desertification, National Forest Act, etc… • Also operational departmental requirements from National, Provincial through to Local Municipality levels which require land-cover / land-use data in support of management, monitoring, review and planning purposes. • IDP’s, SDF’s, EIA’s

  6. 3. National Mapping & Geo-spatial Information Programme (Land Cover) • Last National Programme NLC 1996, NLC2000 • Some provincial land cover datasets done as projects • For Land Cover: • LCCS based classification with lower levels been defined, however, not widely adopted • Standards not clear and still needs to be defined. • To date, 12 pilot sites and North West province

  7. South African Land Cover Legend

  8. Pilot Land Cover Data

  9. Collaboration with CSIR • Methodology: collaborating with CSIR , researching multitemporal, multisensor solution for Land Cover • MODIS-like processing (building on 10+ years MODIS experience) • WELD installed at CSIR, South Africa – data back bone

  10. CSIR Landsat Study Area • Area 92100 km2 • Official Land cover map of KZN 2008 - SPOT5 (GeoTerra Image) • Training and validation data were generated from land cover map • centroids (single 30m pixel) of land cover polygons larger than 2 ha (N= 242 620 sites).

  11. Land cover map from 7 Landsat bands of 4 seasons – 78% accurate

  12. 3. National Mapping & Geo-spatial Information Programme (Land Use) • No global classification system for land sue • Methodology (work in progress) • Actual Land Use vs Zoned/ Planned Land Use • NGI initial proposal: 14 Main classes and 60 sub-classes. • 1. Agriculture & Fisheries, 2 Forestry, 3. Conservation, 4, Mining, 5. Transport, 6. Utilities & Infrastructure, 7. Residential, 8. Community Services, 9. Business & Retail, 10. Industrial & Commercial, 11. Recreation & Leisure, 12. Defense, 13. Unused Land, 14. Water •  What about leisure/holiday resorts, recreation trails, beach, recreational swimming/tidal pools etc

  13. Land Cover and Land Use- need for automation • General • There is not enough skill and capacity in industry – • Need automated classification methods Cost Time

  14. Thank You aparker@ruraldevelopment.gov.za www.ngi.gov.zav

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