Change Detection and Health Assessent Modelling of Pichavaram Mangroves by the Application of Remote Sensing And GIS

Abstract — In the coastal environment, mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropical tidal areas, including estuaries and shorelines. Mangroves form an essential part of the coastal environment as they act as a barrier against cyclonic storms, floods; they help avoid coastal erosion; mangroves prevent the extinction of distinct and vital species of flora and fauna thriving in their ecosystems; they improve the production of coastal fisheries; they balance the coral reef and sea grass bed ecosystems; they enable the recharge of ground water; they retain nutrients and filter sediments. The World's mangroves span over 30 countries with a total area of 99,300 sq. km. World-wide mangroves are disappearing at an alarming rate. In some developing countries about 80 % of mangroves wer