This appendix lists the data sources used to estimate the population figures in the GIS database and other relevant information pertaining to the demographic estimates and GIS datasets. Population data for 1990 and 2000 were provided by CIESIN. Population data for 1960, 1970, and 1980 were estimated by Andy Nelson, using UN country totals for those years and the existing population estimates by Uwe Deichmann.
This version of the population database contains improvements in spatial and population data for specific countries, but still relies heavily on the previous version, especially for spatial data which is referred to as "UNEP/GRID-WRI-NCGIA Africa Population Database, https://na.unep.net/" in the following documentation.
The previous version of this meta-database used data for the nineteen West African countries that were estimated by Benoit Ninnin for the West Africa Long Term Perspective Study (WALTPS) carried out by the Club du Sahel/OECD (see Ninnin 1994). All other figures were calculated by Uwe Deichmann. Unless otherwise stated the administrative boundaries were the same as those in the African Data Sampler (WRI 1995) or in the WALTPS database (see Brunner et al. 1995).
| Spatial data | Population data | |
|---|---|---|
| Source | Kenyan Central Bureau of Statistics (CBS), http://www.cbs.go.ke. | (1) 1999 Population Census, Kenyan Central Bureau of Statistics (CBS); see http://www.cbs.go.ke (2) Kenya Government (undated), Census of Kenya 1989, Digital File (3) Brass. W. and C.L. Jolly, eds. (1993), Population dynamics of Kenya, National Academy Press, Washington, D.C. (4) Kaplan, I., et. al. (1967), Area handbook for Kenya, U.S. Government, Washington, D.C. |
| Notes | The Ilemi Triangle belongs to Sudan by treaty but is administered by Kenya. According to a recent paper by Collins http://www.history.ucsb.edu, SPLM/SPLA, the rebel group that controls Southern Sudan, probably quietly ceded the territory to Kenya. | A district (administrative level 2) growth rate (1989-1999) used to project Sublocation (adminstrative level 5) 1999 population
to years 1990 and 2000. 1999 districts related to 1989 districts based on data from IPUMS (www.ipums.org). Areal interpolation of the 1979 figures using GIS coverages of locations for 1979 and sublocations for 1989 produced reasonable estimates only for some districts. For others, district growth rates were used to produce division figures for 1979. For 1962 division estimates growth rates by district for the 1962-79 period were used. P60-80 were computed using the resulting intercensal growth rates 1962-79 and 1979-89. |
| Spatial data | Population data | |
|---|---|---|
| Source | GIS coverage obtained from the EDC/USAID/FEWS project ans used in the UNEP/GRID-WRI-NCGIA Africa Population Database, https://na.unep.net/ | (1) Lesotho Census, 1996 data downloaded from http://www.acap.upenn.edu (2) Kingdom of Lesotho (1987), Population census 1986, Preliminary results, Bureau of Statistics, Maseru. |
| Notes |
| Spatial data | Population data | |
|---|---|---|
| Source | UNEP/GRID-WRI-NCGIA Africa Population Database, https://na.unep.net/ | (1) Etude d'une Image à Long Terme de l'Afrique. (2) Republic of Liberia: Ministry of Planning and Economic Affairs, 1983, Census of Population and Housing: Summary Population Results: Monrovia 1987. |
| Notes |
| Spatial data | Population data | |
|---|---|---|
| Source | UNEP/GRID-WRI-NCGIA Africa Population Database, https://na.unep.net/ | Estimates of 1990 population were based on (1) 1984-based census results reported in Europa (1992), Africa - South of the Sahara - 1993, 22nd edition, Europa Publications, London (2) Government of Libya (1973), Population census preliminary results, Ministry of Planning Census and Statistical Department. |
| Notes | Boundaries were digitized from the CIA map "Libya" dated 5-93. See http://www.lib.utexas.edu. Projection information was
included on the map, but the scale was not. Due to the small cartographic scale of the map, however, the accuracy of the boundaries
is very low. This may not matter much in the uninhabited desert areas, but may lead to errors in the urbanized coastal regions -
particularly around Tripolis. A note on the map says: "Presently Libya has 25 municipalities. An unconfirmed press article reports that the municipalities were replaced with 1.500 communes in 1992." (?!) |
P60-00 based on growth rates between 1973 from 2) and 1984 from 1). Data for 1964 were also available, but names in the list did not match the names in the 1984 list. Similarly, data for 1973 had to be aggregated to the 1984 units. |
| Spatial data | Population data | |
|---|---|---|
| Source | Level 3 administrative boundaries were obtained via a database produced by the National Statistical Office and the Institut National de la Statistique et de la Recherche Economique, Tananarive, in collaboration with the UN Statistics Division's Software Development Project http://www.un.org. | (1) RGPH (Recensement Général de la Population et de l'Habitat) 1993, Institut National de la Statistique, Madagascar; 2001
level 2 population estimates were from Institut National de la Statistique at http://www.cite.mg in the file estim-pop.pdf. (2) Centre scientifique et medical de l'Universite libre de Bruxelles en Afrique centrale. Madagascar. Cartes de densite et de localisation de la population. Etablies par le CEMUBAC sous la direction de Pierre Gourou, Bruxelles. (3) Repoblika Demokratika Malagasy (1975), Recensement 1975, Serie etudes et analyse, Analyse de donnees demographiques, Institut National de la Statistique et de la Recherche Economique, Tananarive. (4) Repoblika Demokratika Malagasy (1993), Preliminary results of the census of 1993 obtained from the Institut National de la Statistique et de la Recherche Economique, Tananarive, in digital form via the Software Development Project at the UN Statistics Division. |
| Notes | Pop figures and areas by administrative unit were available at the sous-prefecture level for 1966, 1975 and 1993. However,
boundaries changed, especially between the 1975 and 1993 censuses. 1966 and 1975 figures thus had to be estimated for areas created
in 1993 and figures for those units that were affected by these changes needed to be adjusted. In cases where a major urban center
was split from its surrounding area, the 66 and 75 populations of the city from a secondary source was taken for the urban part and
the residual from its total population in 66 and 75 were used for the rural areas. In cases, where areas were split, one of two
methods was used: either a simple areal interpolation, where population is distributed in proportion to area; or the 66 and 75
populations were used using average growth rates for the surrounding areas, and the resulting figures were subtracted from those
units from which the new units were created. The resulting estimates were adjusted for two reasons: - the 1966 figures appear to represent estimates (no census was taken in the 1960 census round), and - the period between 1975 and 1993 is very long, such that average annual growth rates are likely to underestimate the acceleration of population growth in the last few years. |
| Spatial data | Population data | |
|---|---|---|
| Source | Census Enumerator Area (EA) boundaries provided by the Japan International Cooperation Agency (JICA) of Harvard University, thanks to Dai Hozumi. | (1) Census Enumerator Area (EA) population data source (1998): National Statistical Office, Zomba, Malawi: 1998. Malawi
Population and Housing Census http://www.nso.malawi.net. Todd Benson, of the International
Food Policy Research Institute, provided EA shape files with 1998 population data. Region population data source (1998 and 1987):
National Statistical Office of Malawi http://www.nso.malawi.net. (2) Malawi Government (1985), Malawi Statistical Yearbook 1983, National Statistical Office, Zomba (3) Malawi Government (1991), Malawi Population and Housing Census 1987, Summary of Final Results, Vol. 1, National Statistical Office, Zomba (contains 1967, 77 and 87 figures) |
| Notes | (1) A polygon was digitized from the eastern shore of Lake Malawi to the northern part of the country in order to avoid loss of
islands and prevent the aggregation of population to the lake. (2) Boundary changes between 1966 and 1977 censuses: 1966 population for Chitipa, Karonga and Rumphi districts adjusted based on population and area figures from 1. above: P66adj = Pop66old/Land66 * Land77. |
(1) Data were projected using a artificially constructed regions. Region-level growth rates (1987-98) were applied to the EA
units to project population to 1990 and 2000. (2) P60-80 calculated by using unadjusted intercensal growth rates for 66-77 and 77-87. |
| Spatial data | Population data | |
|---|---|---|
| Source | UNEP/GRID-WRI-NCGIA Africa Population Database, https://na.unep.net/ | (1) Etude d'une Image à Long Terme de l'Afrique. (2) Atlas Jeune Afrique, le Mali, 1980. (3) Direction Nationale de la Statistique et de l'Informatique: Recensement général de la population et de l'habitat, 1987: Tome 1: Etat de la population. Tome 2: Répertoire des villages. Tome 3: Natalité, fécondité, mortalité et migrations, Principaux résultats d'analyse. (4) Bureau central de recensement: Bamako, 1991. (5) Nations Unies: World Population Prospects 1988: New York, 1989. (6) Affaires économiques et financières de la République du Mali: Perspectives de la population du Mali, 1963-1973. (7) CERPOD: Migration et urbanisation dans le Sahel: le cas du Mali, Diarra S. et M. Nadio, Rapport de recherche. (8) Lopez-Escartin N.: Données de base sur la population: Mali: CEPED, No. 13, Paris, 1992. (9) Recensement General de la Population et de L'Habitat (Avril 1998) -- Resultats Definitifs, Tome 4: Repertoire de Village |
| Notes | Spatial boundaries were aggregated to match the population data as follows: (1) Oussoubidiagna and Goundara were aggregated into one unit called Oussoubidiagna (2) the sub-units of Menaka --Tidarmene, Inekar, Anderaboukane, and Menaka-- were aggregated into one unit called Menaka (3) the sub-units of Kidal --Tinkar, Tessalit, Aquel-Hor, Annefis, Essouk, Kidal, Bouressa, Abeilara, Abiyou, Tin-Zaouatene, Tin-Essako, and Tin-Esserine-- were aggregated into one unit called Kidal. |
Due to extensive boundary changes between 1990 and 1998, region (administrative 1 level) population growth rates were calculated between these two years and applied to the 1990 cercle (administrative 2 level) data to extrapolate to 2000. |
| Spatial data | Population data | |
|---|---|---|
| Source | EDC Africa Data Dissemination Service from http://edcw2ks21.cr.usgs.gov/adds | (1) Etude d'une Image à Long Terme de l'Afrique. (2) Atlas Jeune Afrique de la Mauritanie, 1977. (3) Annuaire statistique, 1990. (4) Bureau du recensement: Résultats prioritaires du Recensement de la population et de l'habitat, 1988, Vol. I: Nouakchott 1992. (5) Ignegongba K.: Fécondité et ethnie en Mauritanie, CERPA-CERPOD, Paris 1992. (6) Groupe de démographie africaine: évolution des effectifs de la population des pays africains: Mauritanie. Paris, Septembre 1982. (7) Laborie J.P. et J.F. Langumier: Urbanisation de la Mauritanie: Enquête dans trois villes secondaires: Rosso, Kiffa, et Ajoun-El-Atrouss: Documentation française, Paris 1988. (8) Lopez-Escartin N.: Données de base sur la population, Mauritanie: CEPED, No. 14, Paris, Janvier 1992. 2000 census data from Ministere des Affaires Econommiques et du Dedeveloppement Office National de la Statistique Bureau Central du Recensement, Resultats Provisoires du Troisieme Recensement General de la Population et de L'Habitat -2000; and 1988 census data from Bureau du recensement: Resultats prioritaires du Recensement de la population et de l'habitat, 1988, Vol. I: Nouakchott 1992. (9) 2000 census data from Ministere des Affaires Econommiques et du Dedeveloppement Office National de la Statistique Bureau Central du Recensement, Resultats Provisoires du Troisieme Recensement General de la Population et de L'Habitat -2000; and 1988 census data from Bureau du recensement: Resultats prioritaires du Recensement de la population et de l'habitat, 1988, Vol. I: Nouakchott 1992. |
| Notes | Spatial data for the administrative unit (Wilaya) of Nouakchott was added via geo-rectification and drawing with shapefile provided by Piet Buys at the World Bank. The units added include the Moughataa: Toujounine, Ksar, Dar Naim, Riadh, El Mina, Sebka, Tevaragh, Zeina, Arafat, and Teyarett. |
| Spatial data | Population data | |
|---|---|---|
| Source | For the Main Island, The Central Statistics Office, LIC Centre, 1, John Kennedy Street, Port Louis, Mauritius, available from
http://ncb.intnet.mu. For the Island of Rodrigues, Digital Chart of the World (DCW). |
Mauritius in Figures 2001, population data 2000, the Central Statistics Office, LIC Centre, 1, John Kennedy Street, Port Louis, Mauritius. http://ncb.intnet.mu |
| Notes | Spatial and population data for the main Island of Mauritius is for administrative level 3. However, due to lack of spatial data for other islands, the same level of detail could not be employed for the surrounding areas. The Island of Rodrigues, however, was added at administrative level 2. This was done via coastline data (built in to polygons) extracted from the NOAA coastline extractor (http://rimmer.ngdc.noaa.gov). Arbitrary administrative IDs were assigned (unique per island in the group surrounding Rodrigues) and the population was assigned to the main island only. | 9 units confirmed by national office of statistics as having no population data. There are an additional 8 records relating to small islands with no discernable codes that could nor be formally verified. National level growth rates from 1960-2000 applied across all the administrative units |
| Spatial data | Population data | |
|---|---|---|
| Source | UNEP/GRID-WRI-NCGIA Africa Population Database: https://na.unep.net/. | (1) 1990 population estimates are based on census figures and estimates for 1982 to 1990 available from a digital file produced
by the National Statistical Office (from the Republique du Maroc, Recensement General de la Population), obtained through the UN
Statistics Division's Software Development Project. (2) Republique du Maroc (1972), Recensement General de la Population, Rabat. |
| Notes | Sidi Bernoussi-Zenata (geog code 5 in Centre) appears to be the same unit as Mohammedia-Znata. As there is no data available for Al Fida/Derb Sul, this was aggregated with Casablanca | Census figures and estimates for 1982 to 1990 were available from 1. Data for 1971 from 2. Where units were split, the population 1971 population was distributed using proportions for 1982. Population data were projected to 2000 using growth rates derived from United Nations national level estimates and projections. |
| Spatial data | Population data | |
|---|---|---|
| Source | International Food Policy Research Institute | (1)Instituto Nacional de Estatística Mozambique, Resultados Definitivos do Recenseamento Geral da População e Habitação (1997),
http://www.ine.gov.mz (2) Dirrecao dos Servicos de Economia e Estatistica Geral (1960), Anuario Estatistico 1960, Lourenco Marquez. (3) Dirrecao dos Servicos de Economia e Estatistica Geral (1973), Anuario Estatistico 1973, Lourenco Marquez. (4) Republica Popular de Mocambique (1982), Mocambique - Informacao Estatistica 1980/81, Comissao Nacional do Plano, Maputo. (5) Republica Popular de Mocambique (1983), 1o Recenseamento Geral da Populacao, Conselho Coordenador de Recenseamento, Maputo, (6) UNICEF, Digital data set with population figures of unknown origin for 1980, 91, 93 and 95. |
| Notes | (1) Province level growth rates (administrative level 1) from 1991-1997 were applied to the Posto (administrative level 3)
units for projections to 1990 and 2000. (2) 2nd level population figures were available for 1960, 70, 80, and 91. However, the district boundaries and naming of units changed significantly between 1970 and 1980 (and to a lesser extent between 1960 and 1970). Since no detailed maps of admin units for 60 and 70 were available (only listings), the data needed to be reconciled using published maps (and a fair bit of intuition!). The main map used was the 1:2 Million map of Mozambique published by Cartographia (Budapest) in 1993/94. Since Mozambique experienced significant turmoil during the last two decades, the published figures are probably not very reliable. Furthermore, unusual fluctuations in district population (large decreases between 1970 and 80 followed by large increases between 80 and 90) could either be due to data errors, sudden population movements due to civil strife, or signficant redesign of district boundaries. In interpreting the estimates for Mozambique, more than the usual amount of caution and skepticism should be used!!! |
| Spatial data | Population data | |
|---|---|---|
| Source | Atlas of Namibia: A portrait of the land and its people by John Mendelsohn, Alice Jarvis, Carole Roberts and Tony Robertson; published in 2002 by David Philip, Cape Town and Atlas of Namibia Project, 2002, Directorate of Environmental Affairs, Ministry of Environment and Tourism. http://www.dea.met.gov.na | (1) 2001 population data from Census Preliminary Results In Brief, Namibia National Planning Commission, Central Bureau Of
Statistics, March 2002; (2) 1991 data from Republic of Namibia (1993), Statistical Abstract 1993, Number 2, National Planning Commission, Center of Statistics Office, Windhoek, Namibia. (3) South-West Africa (1981), Population Census 1981, Report 01-01, Geographical Distribution, Directorate Development Co-ordination, Windhoek. (4) Republic of Namibia (1993), Statistical Abstract 1993, Number 2, National Planning Commission, Center of Statistics Office, Windhoek, Namibia. |
| Notes | Walvis Bay urban boundary amended as per new spatial data. | (1) Data were projected using 3 artificially-constructed 'super regions' by aggregating units so that there was
correspondence between the spatial units across time. These rates of growth were then applied to the 2001 population distribution
to estimate population in 1990and 2000. (2) Data were available for 1970, 81 and 91 censuses. 1980 and 90 data were derived using average annual 70-81 and 81-91 growth rates. The Namaland district was created between 1970 and 1981. Estimates for this district were derived for 1970 assuming the same share of it contained the same share of population of the three districts in which it was included previously - Mariental, Bethanien, and Keetmanshoop. A corresponding number of people were subtracted from these for 1970. (3) Due to lack of data, 1960 estimates had to be derived using average 1970-80 growth rates applied to the 70 figures. |
| Spatial data | Population data | |
|---|---|---|
| Source | Famine Early Warning Systems Network (FEWS NET) in partnership with the United States Agency for International Development (USAID), 1996. Data retrieved via the Africa Data Dissemination Service (ADDS): http://edcw2ks21.cr.usgs.gov. | (1) 2001 Population: Préliminaire du Recensement Général de la Population et de l'Habitat, 2001 - Bureau Central du
Resensement, Ministère du Plan Préparer de Stone Environmental, Inc. 20 Avril 2002. Online linkage: https://customer.stone-env.com (2) 1998 Population: Atlas Préliminaire de la Pauvreté/Vulbérabilte, République du Niger CD. Préparé pour le Gouvernement du Niger, Secrétariat Permanent du DSRP. Stone Environmental Inc. (3) Etude d'une Image à Long Terme de l'Afrique. (4) République du Niger: Recensement général de la population 1988. Résultats et analyses. (5) Ministère du Plan: Annuaire statistique séries longues: Niamey, 1991. (6) Atlas Jeune Afrique, 1981. (7) Lopez-Escartin N.: Données de base sur la population, Niger: CEPED, Paris, Décembre 1992. (8) Rapport final du Séminaire National sur la Population et le Développement: Formulation d'un plan d'action: Niamey 1986. (9) Venard J.L.: Mission d'appui méthodologique pour l'armature urbaine du Niger. (10) CERPOD: Migrations et urbanisation au Sahel: cas du Niger, Wright Mell I. et K. Alichina Idrissa: Rapport de recherche. |
| Notes | Population data at the canton level are only available for year 2001, thus arrondissement-level growth rates (1988-2001), were used to project the canton-level population to 1990. |
| Spatial data | Population data | |
|---|---|---|
| Source | Famine Early Warning Systems Network (FEWS NET) in partnership with the United States Agency for International Development (USAID), 1996. Data retrieved via the Africa Data Dissemination Service (ADDS): http://edcw2ks21.cr.usgs.gov. | (1) Etude d'une Image à Long Terme de l'Afrique. (2) Institute for Resource Development: Demographic and Health Survey (DHS), 1986: Ondo State, Nigeria. Maryland, 1989. (3) Federal Bureau of Census Nigeria (1991): Census of population, population by sex by state and local government: Lagos, 1992. (4) Population association of Nigeria: Population data assesment in Nigeria: Benin City, 1986. (5) Egunjobi L: Urban growth and housing policy dilema in Nigeria, 1988. (6) Adepoju A: Medium size towns in Nigeria: Research and policy prospects, 1983. (7) Orubuloye I.O. and O.Y. Oyeneye: Population and development in Nigeria: Nigeria Institute of Social and Economic Research, Ibadan. (8) Government of Nigeria (1994): Annual Abstract of Statistics, 1993. (9)Federal Office of Statistics, Lagos (1991): Provisional Population Figures by Local Government Areas. |
| Notes |
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United Nations Environment Programme Global Resource Information Database Division of Early Warning & Assessment - North America |
Page Modified: September 2004
