Linking Soil, Vegetation and Hydrology at Lincoln University's Living Lab: III. Mapping Soil pH and Electrical Conductivity.Geographic Information Systems geographic information system (GIS) Computerized system that relates and displays data collected from a geographic entity in the form of a map. The ability of GIS to overlay existing data with new information and display it in colour on a computer screen is used primarily to (GIS) and Global positioning system Global Positioning System: see navigation satellite. Global Positioning System (GPS) Precise satellite-based navigation and location system originally developed for U.S. military use. (GPS) were used in the assessment of the spatial distribution of soil pH and Electrical conductivity (EC) at Lincoln University Lincoln University. 1 At Jefferson City, Mo.; coeducational; land-grant and state supported; founded 1866 as Lincoln Institute. The school was established for the education of freed slaves by members of the 62d and 65th U.S. Colored Regiments. Living Laboratory. The Laboratory was mapped and the coordinates of every sampling location recorded using Geo-Explorer 3 pathfinder GPS. Soil samples were collected and analyzed for pH and EC. GPS recorded data and the results of soil analysis were transferred to ARCGIS 8.3. where maps of EC and pH were produced. Results showed that soil pH varied from 5.00 to 8.00 and EC from 100.00 to 500.00 mmho. Interpolated interpolated /in·ter·po·lat·ed/ (in-ter´po-la?ted) inserted between other elements or parts. maps (by Inverse Distance Weighing method) showed distinctive patterns of EC and pH across the Living Lab. Using GIS and GPS were very useful in analyzing the distribution of these two soil chemical properties. * Rivers, J. and N.V. Nkongolo. Center of Excellence GIS & Remote Sensing Deriving digital models of an area on the earth. Using special cameras from airplanes or satellites, either the sun's reflections or the earth's temperature is turned into digital maps of the area. , Department of Agriculture and Natural Sciences, Lincoln University. |
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