Analysis of Hambanthota Coastal Zone Infringements Enforced by Coast Conservation and Coastal Resource Management Using Remote Sensing

Abstract

Sri Lanka is still a developing country. Therefore, various changes are taking place in the construction sector, both legally and illegally. Such illegal constructions are common in developing countries. With the development of the country, the number of illegal settlements is increased along the coastal zone of Sri Lanka. This process is harmful to the coastal conservation of the country. Therefore, Coast Conservation Act 1981, 1988, 2011(Amendment) was implemented by Coast Conservation and Coastal Resource Management department to protect coastal zone and reduce unauthorized constructions but there is a problem with whether the regulations of the Coast Conservation Act is properly followed or not at the coastal management zone. So, the main objective of this study was to identify infringements in the coastal zone. Locations were selected for this study by experies of this field and they were from Kudawella west to Mawella south and from Unakoratuwa west to Medaketiya in the Hambanthota district because that areas were the highly affected locations through the district. To fulfill that main objective of study, the proposed methodology was to create normalized difference build-up index maps using Landsat satellite images and final vegetation line coordinates. As final result, this study gained reclassified building index map for selected locations and this study depicts the role of remote sensing and geographic information systems to identify the sustainable development growth of an area.