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GIS Products Available for Download
by Coverage Type

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From the Central African GIS dataset, we have selected some layers that can be downloaded in ARCVIEW and ARCINFO formats. The output from these datasets can be downloaded seperately as color postscript files.

GIS datalayers list by coverage type:

  • Population data
    • Democratic Republic of Congo (formerly Zaire)
    • Gabon
    • Cameroon
  • Vegetation Maps
    • Congo
    • Democratic Republic of Congo (formerly Zaire)
    • Gabon
    • Cameroon
  • Climate
    • Precipitation Datasets
  • Protected Areas
    • Protected area map fromWCMC
  • Satellite Derived Products
    • GAC Continental Landcover Classification from AVHRR data (1982-87)
    • LAC Fires - 1989 from AVHRR
    • GAC Burns, Northern Central Africa, 1986-1987 from AVHRR
    • GAC Burns, Southern Central Africa, 1989 from AVHRR
    • Vegetation Map of Central Africa from AVHRR LAC and GAC
    • Forest Types of Central Africa from GAC data (1982-87)


The following table contains downloadable arc/info/view data layers in a zip format that is readable by both PC and UNIX machines. Each .zip package contains the .shp, .shx, .e00, .dbf and .tbl files that correspond to the product layers. The .doc and/or .txt files contain legends and source information. PC users can use PKZIP from www.pkware.com to unpack .zip files. UNIX users can use the unzip command. Postscript files (.ps) can be downloaded seperately for printing to a color postscript printer. Jpegs are for illustration.


Population Data


Population of Democratic Republic of Congo 1958, 1970, 1984

Reference: Ngondo de Saint Moulin et Tambashe, 1992, La population du Zaire a la veille des elections de 1993 et 1984, Zaire-Afrique #268, p. 488.

  • 1958 census: source unknown, probably Gourou P.
  • 1970 estimate: Atlas des collectivites, de Saint-Moulin, Kinshasa 1976
  • 1984 census: Recensement scientifique de la population, juillet 1984

"Definitive totals", Institut National de la Statistique, Republique du Zaire, Kinshasa 1991

Downloadable Files:

Source/Remarks: Administrative unit boundaries and tabular data from University of Louvain, Belgium


uclpop.ps.jpg



Population of Gabon, 1993
Preliminary Results from Census Bureau

Reference: Recensement General de la population et l'Habitat, 1993

Republique Gabonaise - Ministere de la Planification de l'Economie et de L'Amenagement du Territoire. Direction generale de la Statistique et des Etudes Economiques.

Downloadable Files:

Source/Remarks: Tabular data compiled at University of Maryland. Spatial data (points) obtained from Digital Chart of the World.


gabpoint.ps.jpg



Population density in Southern Cameroon from ONADEF, 1987

Population densities of southern Cameroon from the 1987 census, spatial extrapolations are based on Landsat images, produced at the National Forest Service (CETELCAF)

Reference: "Zone d'Influence de l'Occupation Humaine ", Ministry of Environment and Forests, Office National de Developpement des Forets (ONADEF), October 1992.

Map Scale: 1:500,000

Downloadable Files:

Source/Remarks: Map from Forest Service Cameroon (CETELCAF) Remote Sensing Unit. Digitized at University of Maryland.

Delineation of zones of population density against a background of "0 density". Based on 1987 census.


camdensrds.ps.jpg



Vegetation Maps


Phytogeography of Congo from DesCoings, 1969

Reference: B. Descoings, 1969, "Phytogeography of Congo", Office de la Recherche Scientifique et Technique Outre-Mer, Bondy, France.

Map Scale: 1:2,000,000

Downloadable Files:

Source/Remarks: Based on J. Koechlin, B. Descoings, and B. Rollet.

Digitized at University of Maryland at College Park.


congphyto.ps.jpg



Vegetation of Democratic Republic of Congo from Devred,1958

Reference: Devred, R., 1958, La vegetation du Congo Belge et du Ruanda-Urundi, Bulletin de la Societe Royale Botanique de Belgique, (65), 409-468.

Map Scale: 1:5,000,000

Downloadable Files:

Source/Remarks: Digitized at the University of Maryland. Map based on the compilation of documents from R, Devred, P. Duvigneau, C. Evrad , P. Gerard, R.Germain, G.Gilbert, J. Gillardin, J. Lebrun, J. Leonard. L. Liben , A. Michel, W. Mullenders, W. Robyns, A Shmitz, A.Taton, J.Wagemans.


devred.ps.jpg



Phytogeography of Gabon from Caballe, 1978

Reference: Guy Caballe,1978, Essai Phytogeographique sur la Foret dense du Gabon, Annales de l'Universite Nationale du Gabon, No. 2 , mars 1978. pp 87-101

Map Scale: original scale unknown

Downloadable Files:

Source/Remarks: Departement de Biologie de l'Universite Nationale du Gabon. BP 911. Libreville (Gabon).

Digitized at the Department of Geography, University of Maryland at College Park, August 1996. Original document of bad quality, size: (3 inches by 3 inches) Digitized map should not be used for quantitative work.


gabphyto.ps.jpg



Ecological Map of the Vegetation Cover of Cameroon

Reference: National Center for Forestry Development (CENADEFOR), Cameroon, "Ecological Map of the Vegetation Cover of Cameroon", 1985. (NOTE: CENADEFOR's name has been changed to Centre de Teledetection et de Cartographie Forestiere (CETELCAF))

Map Scale: 1:1,000,000

Downloadable Files:

Source/Remarks: Based on interpretation of Landsat images, 1973-1976, and air and ground surveys. Digitized at the University of Maryland. The only legend is on the map itself (cameco.ps).


cameco.ps.jpg



Climate

Monthly Precipitation 1980-1990 & Average Monthly Precipitation 1941-1980

Reference: Sharon E. Nicholson, Jeeyoung Kim, Jon Hoopingarner, 1988, "Atlas of African Rainfall and Its Interannual Variability", Department of Meteorology, the Florida State University, Tallahassee, FL 32306

Downloadable Files:

Source/Remarks:This dataset consists of 1040 station records, obtained on diskette from Sharon Nicholson. The original Nicholson dataset has records for 1338 stations. The standard reference period for monthly long-term means was 40 years, 1941-1980. Monthly rainfall for years 1980 - 1990 (the coverages "nich1980" through "nich1990") is fairly complete for earlier part of decade, but spotty for later years.



nichols_rain.ps.jpg


Protected Areas




Protected area map from World Conservation Monitoring Center

Reference: World Conservation Monitoring Center (WCMC), 1993, United Nations List of National Parks and Protected Areas, United Nations Environment Program, International Union for the Conservation of Nature, http://www.wcmc.org.uk/protected_areas

WCMC, "WCMC Biodiversity Map Library - Closed Moist Tropical Forests and Managed Areas Data", February 1992.

Gillian Bunting, Corinna Ravilious, "Tropical Managed Areas Assessment (TMAA), Africa" World Conservation Monitoring Centre, version 1.0, July 1992

Map Scale: unknown

Downloadable Files:

Source/Remarks:



protected.ps.jpg



Satellite Derived Products


GAC Continental Landcover Classification of Africa from AVHRR GAC Images, 1982-1987

Vegetation Map of the Region derived from the AVHRR-Global Area Coverage (GAC) dataset from 1982-1987.

Reference: N. Laporte, C. Justice, M. Heinicke, B. Lawrence, 1997, "The Use of Time-Series Satellite Data for Characterization and Monitoring of the Seasonal Forests and Savannas of Central Africa"Executive Summary, Biodiversity Support Program, Washington, DC, September1997.

Map Scale:pixel resolution = 6.5 x 6.5 km

Downloadable Files:

Source/Remarks: This is a GRID [raster] dataset.



allgac.ps.jpg



Distribution of Active Fires - Southern Hemisphere 1989

Fire distributions map derived from AVHRR - Local Area Coverage (LAC) data.

Reference: Jackie Kendall, Godard Space Flight Center, NASA

Map Scale:not yet available

Downloadable Files:not yet available

Source/Remarks: This image for illustration purposes only.


fires.jpg



GAC Burns, Northern Central Africa, 1986-1987

Extent of uncontrolled burnt areas for the northern hemisphere (dry seaon 1986-87) derived fron the AVHRR-Global Area Coverage (GAC) dataset.

Reference: N. Laporte, C. Justice, M. Heinicke, B. Lawrence, 1997, "The Use of Time-Series Satellite Data for Characterization and Monitoring of the Seasonal Forests and Savannas of Central Africa"Executive Summary, Biodiversity Support Program, Washington, DC, September1997.

Map Scale: pixel resolution = 6.5 x 6.5 km

Downloadable Files:

Source/Remarks: This dataset was derived for the dry season 1986-1987. This time period was chosen because of access to Landsat MSS scenes suitable for validation.


norburns.ps.jpg



GAC Burns, Southern Central Africa, 1989

Extent of uncontrolled burnt areas for the southern hemisphere (dry season 1989) derived fron the AVHRR-Global Area Coverage (GAC) dataset.

Reference: N. Laporte, C. Justice, M. Heinicke, B. Lawrence, 1997, "The Use of Time-Series Satellite Data for Characterization and Monitoring of the Seasonal Forests and Savannas of Central Africa"Executive Summary, Biodiversity Support Program, Washington, DC, September1997.

Map Scale:pixel resolution = 6.5 x 6.5 km

Downloadable Files:

Source/Remarks: This dataset was derived for the dry season 1989. This time period was chosen because of access to Landsat MSS scenes suitable for validation.


soburns.ps.jpg



Vegetation Map of Central Africa from AVHRR LAC and GAC images used in CARPE map

Landcover map of central Africa derived from LAC data for the Forest domain and GAC data for the savannas (1990's).

Reference: N. Laporte and M. Heinicke,C. Justice , S. Goetz, 1997, "A New Land Cover Map of Central Africa Derived from Multiresolution, Multitemporal AVHRR Data", IJRS (in press)

Map Scale:1:5,000,000

Downloadable Files:

Source/Remarks: Combined LAC and GAC; classification used in 1996 CARPE map


smallcomb.ps.jpg



Forest Types of Central Africa

Map of the forest types of central Africa using temporal series of GAC data (1982-87).

Reference: Mapping Forest types of Central Africa using GAC NDVI time series (1982-1987) and ancillary information from the UMD Central Africa GIS N. Laporte, September 1996, Report to Biodivertsity Support Program, Washington, DC, 25 pages, + map at scale (1:5,000,000),

Map Scale:1:5,000,000

Downloadable Files:

    forestype.ps.zip - Map only

Source/Remarks:


forsetype.ps.jpg



White Vegatation Dataset, 1983

Reference: F. White, 1983, "The Vegetation of Africa", UNESCO, LaChaux-de-fonds, Switzerland.

Map Scale:1:5,000,000

Downloadable Files:

Source/Remarks: Digitized and reprojected to lat/long at CSIR, South Africa (original projection is Miller Oblated Stereographic).


white.ps.jpg

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