Mangrove Species Diversity, Stand Structure, and Zonation - A Case Study at Pahawang Kecil Island

Abstract

Pesawaran Regency is an administrative area of Lampung Province which has the potential marine tourism with mangrove resources in Pahawang Kecil Island. Pahawang Kecil island is a coastal natural tourist destinations located in Punduh Padada District, Pesawaran Regency. The mangrove ecosystem is a community of mangrove vegetation associated with fauna and microorganisms. There are various components of life in the ecosystem. In addition, the main function of mangroves is to protect stability of the shoreline from sea waves. In fact, the conversion of mangrove ecosystems become a tourist area and fish pond area continues. This impact to the local government and community members to rehabilitation mangroves. However, this prefentive activity to rehabilitation are failed. This failure caused by not according to the mangrove planting area. Planting mangrove is not in the green belt area. Thus, it is necessary to have a preliminary study of landscape typology mangrove vegetation. In accordance with the presidential regulation Number 37 of 2012 which explains that the preservation of mangrove ecosystems is by accommodating deep mangrove ecosystems Regional Spatial Planning and zoning of coastal areas and small islands. The purpose of this study was to identify the condition of mangrove vegetation and create the mapping typology of mangrove vegetation on Pahawang Kecil Island. The research was carried out on vegetation parameters using the combination method of lines and checkered lines with measurement of diameter, height and number of individuals. In addition, measurements of the inundation height of each were carried out in research sites. Pahawang Kecil has the Rhyzophora stylosa species with the highest volume level of mangrove vegetation, namely 3.2538.15 m3 / ha. The location of Pahawang Kecil Island was identified in 10x10 meter dominance species mangrove Rizophora stylosa with a relative density with a value of 94.12%, relative frequency value of 8.47%, and an important value of 105.96%.