UN workshop for South Asian countries on collection

UN workshop for South Asian countries on collection & dissemination of socio-economic data from population & housing censuses New Delhi, 28 -31 may 2012 Use of GIS Mapping & Spatial Analysis Country Presentation – Sri Lanka Janaka Rajapaksha Department of Census and Statistics(DCS) Sri Lanka

Outline Ø Census Mapping -Pre Enumeration Stage-Preparation of based maps - Enumeration -Post Enumeration Ø Data Dissemination using Thematic maps Ø Data Dissemination through Web-using maps Ø Spatial Analysis 2

ØCensus Mapping- Pre Enumeration Stage Technologies Used for preparing base maps in 2010 Round Census - Use GIS related software(Arc map/Arc info) - Satellite images - Digital maps - GPS Equipments - GPS Pints were taken for unclear boundaries - Digitized GN division Boundaries in 2001 census

Ø Census Mapping- Pre-Enumeration Stage - Used Satellite images

Ø Census Mapping- Pre-Enumeration Stage - Used Digital maps

Ø Census Mapping- Pre Enumeration Stage - Used Digitized GN division Boundaries in 2001 census

Ø Census Mapping- Pre-Enumeration Stage -Used GPS in census mapping

ØCensus Mapping- Pre-Enumeration Stage -prepared GN Division Map(2011)

Small Area Statistics by Census Blocks (CBs) - MRCB 9

MRCB Data Base

Enumeration Area Coding 2001 • • A 1 : Province & District: (2) A 2: Polling Division(3) A 3: DS Division: (2) A 4: GN Division(3) A 5: Sector(U/R/E)(1) A 6: MC/UC/PS: (2) A 7: Ward/Village/Estate: (3) Census Block No: (2) 2011 • A 0: (5) 1 9 1 1 0 1 2 0 9 1 2 5 2 3 2 2 0 7 0 6 0 8 0 6 1 0

ØCensus Mapping- Pre Enumeration Stage -Prepared Census Block Map(2011)

Illustration of nested Sri Lanka Administration Hierarchy of sri Lanaka Provinces (9) Districts (25) Census Blocks (65, 012) GND’s (14, 022) Divisional Secretariat Divisions (330)

Modes of Data Dissemination Printing : Departmental Publications Electronic Media (CD ROMs and DVDs) Census Info/ Dev info Geographic information systems (GIS) Internet : Web site ØStatic web pages (html, PDF, excel) ØInteractive online tools (tabulating/graphing/mapping tools, etc) Census Info

Population and pop- density Patterns by Districts-2001

Population and pop- Density Patterns by DS Divisions-2001

District Level Population By sector wise and Ethnic grups-2001 Legend Urban Rural Estate

Population density Patterns of colombo District-2001 18

Analysis using Thematic Maps. Ranking DS Divisions by Poverty -2006

Analysis using Thematic Maps-Classification of GN Divisions by Selected Unsatisfied Basic Needs(UBN): 2007

ØAnalysis using Thematic Maps-Tsunami Mapping

ØThematic Mapping- Data Dissemination through Web

ØSpatial Analysis -Multiple Buffers

ØSpatial Analysis – Use of GIS for Site Selection -Selection of Lands for Construct Southern Highway

Thank You