Mangrove forests are the most productive coastal ecosystems of the tropical and sub-tropical areas (Hutchings and Sanger 1987). Mangroves play a crucial role in protecting the life and properties of the coastal communities from the cyclone and tidal surges. It provides habitats for many crustaceans, fishes and marine animals and deliver plant species that can produce both the timber and non-timber forest products that supports the livelihood of the coastal people (Tomlinson 1986; Hellier 1988; Pemadasa 1996; Kathiresan and Qasim 2005).