Transcript RECTAS www.rectas.org Trends in Surveying and Mapping in Nigeria Prof. Isi A. Ikhuoria Executive Director, RECTAS, Ile-Ife, Nigeria e-mail: [email protected] +2348033712799

RECTAS
www.rectas.org
Trends in Surveying and Mapping in Nigeria
Prof. Isi A. Ikhuoria
Executive Director,
RECTAS, Ile-Ife, Nigeria
e-mail: [email protected]
+2348033712799
Colonial: 1860-1960
Post-Colonial: 1960-2011
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Mapping Authorities
Survey Framework and Techniques
Education and Training
Survey & Mapping Professionalism
Resource survey and mapping
Map & Survey Data Use:
Colonial: 1860-1960
• Mapping Authorities:
o Directorate of Overseas Surveys in UK
o Federal Surveys Department, Lagos, Nigeria
• Survey Framework and Techniques
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Traditional tools (field sketches by Dos)
Geodetic controls (analogue instruments)
Aerial survey (Canadian aid, 1940s)
Regional Survey Departments
Densification of control networks
Colonial Regime (contd.)
• Education and Training
o In-house training
o Training at DOS, UK
o Survey School, Oyo (1908)
• Professionalism of Survey & Mapping
o Survey School, Oyo (1908)
o Nigerian Institution of Surveying (1934)
o Registered Surveyors
Colonial Regime (contd.)
• Resource survey and mapping
o planimetric mapping (<1860-1930s)
o topographic mapping (>1940 1:100,000, 1:50,000)
o Geological survey and mapping
o transportation and resource projects
- roads and railway routes
- mineral resource (coal, tin, etc) mining
• Maps & Survey Data Use
- administration
- planning
- development and management
Map & Survey Data Use
• Administrative maps:
o Colony of Lagos
o Southern Protectorate [Lt Henry Cook, et al from sketches of
District officers (DOs)], 1911
o Nigeria (amalgamated)
o 3 Regions (northern, eastern and western regions)
o Provinces
Map & Survey Data Use (contd.)
• Planning
o Forest reserve and plantations demarcation
o Agricultural plantations (cocoa, oil palm, rubber, etc)
o Townships (cadastre, infrastructure)
• Development and Management
o Utilities, housing, infrastructure, etc
Post Colonial: 1960-2011
• Mapping Authorities:
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DOS (mapping of north-east till 1975)
Federal Surveys Department
Regional/State Survey Departments
Geological Survey Department
Forestry Department
National Population Commission
Private Sector (petroleum industries)
Regional Survey Departments
Densification of control networks
Post Colonial Regime (contd.)
• Survey Framework and Techniques
o Geodetic controls (analogue instruments)
o Aerial surveys (Canadian aid, 1960s, Federal & State Govts.
> 1970s. 1:2000, 1:6000, 1:10000, 1:25,000 photography)
o State Survey Departments
o Densification of control networks
o Use of satellite imagery (foreign sources)
o NASRDA Space programme (32m, 5m-2.5m)
o 13 AFREF (GNSS core stations)
o GSDI
o GIS Policy
Post Colonial Regime (contd.)
• Education and Training
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In-house training
Federal School of Surveying (ND, HND, PGD)
University Degree (ABU, UNN, Unilag + 5)
Polytechnic (Kadpoly + 4)
RECTAS (1972)
- technician
- technologist
- PGD
- MSc
Survey & Mapping Professionalism
• Professionals
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Registered Surveyors (< 3000)
Photogrammetrist
Cartographers
Yet to have official recognition at
Geographers
Federal & State Survey Offices
GIS Experts
• Professional Associations:
- NIS, SURCON
- Nigerian Cartographic Association
- Geoinformation Society of Nigeria
Resource Survey and Mapping
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Planimetric (population census)
Topographic (digital conversion of 1:50,000, 1:25,000)
Geology and mining
Forestry (plantations, landuse/landcover with radar)
Agriculture (farm settlements, etc)
Petroleum, etc
Maps & Survey Data Use
• Administration
o Nigeria
o States
o Local Councils
• Planning
o Forestry (plantations, landuse - NigSat1)
o Agriculture
o Atlases, routes & navigation
o Land administration (AGIS, Lagos, EGIS,OGIS, NGIS)
Development and Management
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Utilities, housing, infratructure, etc
Communication (mobile phone)
Tourism, web-GIS (Lagos state)
Marketing (brewery products, etc)
Oil and gas (inventory & services)
Health facilities
Land reform
Disaster management
EIA
Challenges
• Potentials
o GI technology diffusion
o Critical mass of GI expertise
% 34
Rate of adoption of
Geoinformatics
“critical mass” occurs
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Time
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• RECTAS & other Institutions’ greater relevance
 Capacity building
 Research (3D GIS , Geospatial fusion, etc)
Conclusion
• Paradigm shift
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knowledge exchange
indigenous content
e-governance
Land administration, reform (1:10000, 1:5000, 1:2000)
Decision support systems