கிளிநொச்சி மாவட்ட பூநகரி பிரதேச செயலாளர் பிரிவின் நிலப்பயன்பாட்டு மாற்றம் (2002-2020) : தொலையுணர்வு மற்றும் புவியியல் தகவல் ஒழுங்கினை அடிப்படையாக கொண்டது

Abstract

Land resources are the most valuable and significant, among the resources available within a Country. They are also basic to all other activities within that country. Land use depends on how the land is used for various purposes. When land use is undertaken with proper planning, it leads to sustainable developmental activities Kilinochchi district has undergone rapid land use changes within the last thirty years. Such changes have been due to the internal war, the Tsunami, increase in population as well as the deforestation activities in this area. The secretarial division of Poonagary has been no exception to such changes. The main purpose behind this study are to identify the changes in the land use patterns of Poonagary secretarial division, analyzing and comparatively observing the land use patterns on a periodical base and point out the changes as well as the factors that led to such changes. Geographical information system and remote sensing techniques have been used to carry out this survey of land use changes. The primary data for land use changes have been collected through direct field observation, while secondary data are from high resolution satellite images, topographical maps of the survey department and the statistical data available with the secretarial division concerned. The changes were found out through the superimposition of land use maps pertaining to the years 2002,2014 and 2020. In order to find out how a certain type of land use got converted to another, the confusion metric table was applied. A larger part of the changes had occurred in forests, home gardens, agricultural lands and water bodies. Most of the changes have been due to the increase in population. More land use changes on a regional basis are obserued in areas including Pallikkuda, Nallur, Ponnagari paramankitaai and Alankani. Thereby, this study recommends that the information collected regrading land use and land cover, provide much guidance, to understand the present land use situations, devise plans on such bases and thereafter to implement them.