Thai Application of Geographic Information System in the Analysis of Land Use Changes in the Mae Thang Sub-watershed, Phrae Province

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Kanthika Mangmool
Somnimirt Pukngam
Venus Tuankrua


 Geographic information system (GIS) were applied to analyze the land use changes in the Mae Thang sub-watershed, Phrae province during the years B.E. 2550–2562 (2007-2019). The areas at risk under consideration for land use changes were deternubed, and also to propose further guidelines for the management natural and environmental resources.

The Mae Thang sub watershed has an approximate area of about 120 square kilometers, with the area being divided into five land use categories, forest area, agricultural area, urban and built-up land areas, water body, and miscellaneous land area. The total change in land use area during B.E. 2550–2556 (2007-2013) was around 41.33 square kilometers, with forest area was mostly decreased by 24.29%. The area under agriculture was mostly increased by 68.76%. The total change in land use area during B.E. 2556–2562 (2013-2019) was 9.69 square kilometers, with that under agriculture was mostly decreased by 8.88% while the area under forest was mostly increased by 7.19%. An analysis of the area classified under forest use indicated that the levels at an intrusion risk of low, moderate, and high risk totaled to around 66.60, 16.02, and 37.80 square kilometers in area or 55.31, 13.30, and 31.39%, respectively. The guidelines proposed in this study can be used as a guideline to increase the forest area while making strategies, policies, and situations for future land management.

Keywords: Geographic information system, Land use, Mae Thang sub-watershed, Phrae province


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