The integration of physical and biological environments is an application
approach used with objective of identifying a spatial diversity of the terrestrial
ecosystem. The study area, Northeast Thailand, covers an area of about 170,000 km2 or
one-third of the kingdom area. The main components of ecosystem in the Northeast was
synthesized and categorized to define the possible classification. As a result, the components
defined include landform, rainfall, slope and elevation, vegetation and soil. Landsat data and
topographic map was used to formulate the landform layer. Analysis of daily rainfall of the past
years provides the rainfall layer. Digital Elevation Model (DEM) interpolated from elevation
contour map was analyzed to generate the slope and elevation layers. Normalized Difference
Vegetation index (NDVI) of Landsat data and ground survey offer information on the spatial
vegetation cover and type. Spatial soil layer was performed using soil series group of
Department of Land Development. Each of the identified layers with their associate attribute
was digitally encoded in GIS database to eventually create the thematic layers. The integration
of those layers was performed as the criteria set from which the spatial diversity of the
ecosystem could be identified. Overall terrestrial ecosystem includes natural ecosystem which
located in the forest conservation areas whereas agricultural systems are restricted to the high,
medium and low alluvial terraces. The flood plain ecosystem was found as narrow strips and
isolated depression areas in the Mun, Chi and Mekhong watershed. In conclusion, with the
advent of digital satellite data and GIS capability the spatial diversity can be effectively
identified. The result obtained can be made available to support the strategic management of the
ecosystem.
The integration of physical and biological environments is an applicationapproach used with objective of identifying a spatial diversity of the terrestrialecosystem. The study area, Northeast Thailand, covers an area of about 170,000 km2 orone-third of the kingdom area. The main components of ecosystem in the Northeast wassynthesized and categorized to define the possible classification. As a result, the componentsdefined include landform, rainfall, slope and elevation, vegetation and soil. Landsat data andtopographic map was used to formulate the landform layer. Analysis of daily rainfall of the pastyears provides the rainfall layer. Digital Elevation Model (DEM) interpolated from elevationcontour map was analyzed to generate the slope and elevation layers. Normalized DifferenceVegetation index (NDVI) of Landsat data and ground survey offer information on the spatialvegetation cover and type. Spatial soil layer was performed using soil series group ofDepartment of Land Development. Each of the identified layers with their associate attributewas digitally encoded in GIS database to eventually create the thematic layers. The integrationof those layers was performed as the criteria set from which the spatial diversity of theecosystem could be identified. Overall terrestrial ecosystem includes natural ecosystem whichlocated in the forest conservation areas whereas agricultural systems are restricted to the high,medium and low alluvial terraces. The flood plain ecosystem was found as narrow strips and
isolated depression areas in the Mun, Chi and Mekhong watershed. In conclusion, with the
advent of digital satellite data and GIS capability the spatial diversity can be effectively
identified. The result obtained can be made available to support the strategic management of the
ecosystem.
การแปล กรุณารอสักครู่..
