Census MappingA Case of Zambia UN Workshop on Census Cartography and Management, Lusaka, 8-12th October 2007
Presentation Outline • History of Census Mapping in Zambia • Census Mapping Methodologies • Enumeration Area Demarcation Criteria • Role of GIS in the CSO • Challenges facing the Office with regards to mapping • Strategies for the 2010 Census Mapping • Urgent short term objectives of the 2010 CMP • Long term objectives of 2010 CMP • Imagery Coverage and costing • Spatial Data Availability for mapping • What we expect from the 2010 CMP
History of Census Mapping • 1977-1980 Census mapping for 1980 Census • 1987-1990 Census mapping for 1990 Census of Population and Housing • 1998-2000 Census mapping for the 2000 round of Census of Population and Housing
Census Mapping Methodology • 1980 and 1990 census mapping methods based on manual methods with prismatic compasses and drafting. • 2000 Census GPS was used to update map features but still manual plotting and drafting of maps was still employed. • 2010 Census mapping method largely GIS based with Imagery as the base map. GPS to be used to update the locality listing and community infrastructures.
Enumeration Demarcation Criteria • Household 60-100 hh or 300-500 people in rural EA’s and 100-150 hh or 600-900 people in urban EA’s • Estimates based on the average rural hh size of 5 in rural areas and 6 in urban areas • Demarcation hierarchy/coding pattern tied to Province, District, Constituency and Wards • For 2010 Census Mapping a Locality name boundary file to be created for dissemination of small areas statistics.
Role of GIS in CSO • GIS has not been used in pre census cartographic activities • Technology widely used in the 2000 census analysis to produce Census atlas and Thematic Maps • All 2000 EAs were digitized and various administrative geography created- province, district, constituency and ward. • GIS used to disseminate demographic data at these levels
Challenges facing the Office with regards to GIS use • Inadequate integrated and properly designed data warehouseand database • Inadequate awareness within the organization on use of GIS in statistical agencies • Lack of adequateinstitutional support regarding maintenance and sustainability of GIS • Inadequate accurate geographic base data and Inadequate equipment • Skills development and training is needed to realize the potential of GIS • Inadequate funding and operational assistance to make the difference
Strategy for 2010 Mapping Program • Greater GIS data analysis and dissemination possibilities • Creation of an accurate administrative and statistical boundary spatial database • Accurate, cost effective Census Mapping operations and with the end result being accurate EA demarcation and map creation. • Increasing the scope of statistics products • Further developing GIT capacity within the CSO • Fast-tracking relevant staff skills development • Acting as a corporate service provider to the CSO • Increasing the accuracy and effectiveness of census and survey data collection • Time and Cost Saving due to decreased fieldwork activities as a result of better survey and census implementation methods.
Urgent short term implementation processes for the CMP • Establish an accurate cartographic base for creation of accurate census and survey cartography • Essential to obtain high resolution satellite imagery to act as an accurate and current geographic base from which census mapping operations can be initiated. 2.5 meter and 1 meter resolution for rural and urban respectively • Procure computer equipment to equip Head office and Provincial Offices with GIS labs -14 PCs and 10 Large Format Plotters procured by UNFPA • Procure additional equipment such as the A3 printers and specifically the GIS Software for demarcation and image server. • Train staff as well as the field staff in modern demarcation methods concurrently with the database design and installation of the GIS.
Long term objectives of 2010 CMP • Providing census support during the enumeration and processing phase • Playing an essential part in analysis and dissemination of the Census 2010 information • Designing and implementing a poverty mapping program • To create a definitive Locality Name boundary set derived from the EA boundaries • Continuing to produce accurate EA maps for survey taking • Progress tracking and logistics tracking center during the 2010 census • Investigating new ways of analyzing economic and socio-demographic statistics in the spatial context • Leading the statistics advocacy campaign to the users through innovative analysis and dissemination techniques • The creation of an extensive Census Atlas for the 2010Population Census
Satellite Imagery Coverage of Zambia • 301 Spot scenes cover Zambia
Spatial Data Available for Mapping • IKONOS 1m pan sharpened satellite imagery for a part of Lusaka and the whole of Kafue towns. • The provincial, district, constituency, ward and national parks boundaries are available in digital format. • The 2000 Census EA boundaries are available in digital format. Census data is only linked to ward, constituency and district level. • No digital topographic map sheets only hard copy maps exist. • Digital point data regarding school and health facility locations are also available, as well as transport and topographic data.
What we expect from the 2010 CMP An integrated GIS that will answer current CSO Challenges: • Accurate geographic base to plan and implement census and survey operations-increase accuracy of data collection, increasing demand and profile of statistics in the user community. • Added analysis and dissemination possibilities (thematic maps, etc) will enhance decision-making & advocate the use of statistics and further increase the profile of statistics. • Institutional capacity will be increased due to the added dimension GIS brings to all the core processes within the CSO. The Unit will act as Corporate service provider for the whole organization. • Master sampling frames and updated survey methodology increasing the accuracy of surveys and census data • Socio-demographic data collected more cost and time effectively with fewer resources.
End of Presentation Thank you for your attention! email@example.com