GIS and Agriculture GIS and GPS GIS- A GIS is computer system capable or capturing, storing, analyzing, and displaying geographically referenced information. GPS-The Global Positioning System (GPS) is a space-based satellite navigation system that provides location and time information anywhere on or near the Earth. Geographic Information stored in 3 layers : Points ( Wells) Lines (Stream, Canals, Roads) Polygon (Agri. fields, Ponds) Possible GIS data layers for Agri. [Canal, River, Lakes, Ground Water etc.] Hydrology Elevation Soils [1 to 90 meters above sea level from south to north-DEM] [Sandy, Sandy loam, Sandy clay, Loamy sand etc] irrigation and drainage, Infrastructure [small access road, market centers etc.] Land Use [Agricultural, Forest, Fishery] Soil Texture and Agri. Land use Source: BARC Source: Banglapedia Cropping Pattern by Land types Map source: Banglapedia Data source :CROP DIVERSIFICATION IN BANGLADESH - M. Enamul Hoque, DAE, Dhaka Major Crop Production Area Map Irrigation Coverage 100% 50%-25% Below 25% Major Crop Production How GIS data can be collected Primary Data Capture (first-hand collection) Digitizing GPS collections Aerial photographs Remote sensing data How GIS data can be collected Secondary Sources : Administrative Boundaries Water bodies Roads Land use pattern Altitude/Contour Software/Hardware used GIS and GPS Software used: •Arc GIS 10 •Arc View GIS 3.2 •Topo 4.0 (Magellan Triton 300 GPS Receiver) GIS and GPS hardware used •PC •GPS Receivers • Plotter •A3 Printer THANK YOU