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Utilization of GIS for Natural Resources and Environmental Management Dr Noordin Ahmad National Space Agency (ANGKASA) QUESTION: Can the earth continue to provide and regenerate the resources we need for supporting life and encourage development?… Natural resources and environment is: an economical issue. a financial issue. a personal issue Political!. Features of Natural Resources Source of wealth Relate to environment Covers large areas (cross boundaries and administrative jurisdictions) Depleting asset and difficult to recover (Preservation, conservation, protection) Multidisciplinary, multi agencies Characteristics of the nature resource data 4 Spatial (distributed over the earth’s surface); Multiple uses (e.g. mangroves are used for forestry, fisheries, agriculture, and recreation); Subject to change with time (retreat and accretion); Affected by use (pollution of rivers by untreated discharge, reduction of water resources, siltation of rivers and sedimentation in the coastal waters by excessive land clearing). Activities and impact on Natural Resources (Depletion, Degradation) Land and Marine based Natural Resources Impacts/Effects Activities using Resources Human Settlements / Development 5 Non-Resource-based Activities (Pollution. Economic Generation) Source: IMF Country Reports with Statistics supplements DID Manual 1973 on river reserve GIS Technology GIS allows us to measure our natural resource assets Understand our patterns of change Better understand the resources we are using Identify the impact of human-induced geographic change GIS provides policy makers and planners with transparent predictable guide (planning) for management thus helping to better utilize the resources and support development These are not natural resources BUT they are important data to manage natural resources, hence the use of GIS Existing land use Geological Soil type Administrative Historical flood Environmental management data LANDUSE TRANSPORTATION Database of River Study (DOE) Administration Boundary State District Land Use Existing Landuse Water Quality Point Sources Mukim Local Authority Non Point Sources WQS-ASMA Parlimentary Committed Landuse WQS-Survey Sub-catchment 2 Future Landuse Road Railway Location WQ-Catchment WQ-river 240507 Hydrological Information Taman Hydrological Station Biological & Environmental Base Map Protection Zone Forest Reserve 1 Cadastral Lot Swamp Satellite Image River Management Topo Map Weir River Geographic Features Contour River Corridor Geology Eco-tourism site Soil Cross Section Mud Bridge Lake Retaining Wall Water Supply & Resources Major River River Bank Protection Sand Mining Analysis DEM Dam Canal Water Pipe Headwater Reach Sub-catch-q2k WHY REMOTE SENSING ? Remote sensing has these capabilities !! 1. Quick update 2. High reliability and cover large area 3. Could be used for many applications MODIS - 19 Aug 2002 NATURAL RESOURCES AND DISASTER MANAGEMENT Smoke Hot spot Damage DISASTER MANAGEMENT ENVIRONMENTAL PLANNING Use : Mapping of the extend of flood Planning of future development site- less flood prone Valuation of land Using radar image - can penetrate clouds Concept of Sentinel Asia Step2 Application of WINDS for Sentinel Asia in Step2 Sentinel Asia Information-sharing Platform Information-sharing Platform Digital Asia (Internetbased Web-GIS) is used satellite images overlaid on maps with disasterrelated information on the Internet upload data by putting them on a Digital Asia server (OGC-based) Content (Sharing Data) • Satellite images from space organizations • On-site digital camera images • Fine regional digital maps from national geography organizations, etc. • Detailed disaster information • Regional social / economic data 1 ALOR SETAR, KEDAH SPATIAL ANALYSIS CRITERIA (example) SPATAIL MODELLING (CELLULAR AUTOMATA) Unit analysis, based on pre-defined neighbourhood functions. A A A A A A A A A A A A A A A A A state at t1 state at t2 URBAN GROWTH MODELING 5 Using various settings of the growth rate factor until a target of urban growth is met