ANALISIS TINGKAT KERUSAKAN DAN VEGETASI MANGROVE DI KAWASAN PESISIR LABUHAN SAWO KABUPATEN SUMBAWA

The main cause of damage to the mangrove vegetation is the lack of attention and management are not optimal by the public and Associated Stake Holder. Some of the problems in the management of mangrove forests in Indonesia, among others, land controversy that made pond, thus causing damage to habitat and biodiversity in the region. Preliminary study findings that in coastal areas Labuhan Sawo Sumbawa most people have made the area the growth of mangrove area into ponds. One alternative to overcome these problems we need information about the composition and structure of mangroves and mangrove damage levels in the target area. This study aims to determine the composition and structure of vegetation, the extent of damage, physical and chemical parameters and morphometric structure of leaves in the mangrove ecosystem in coastal areas Labuhan Sawo Sumbawa regency. As for the planning study done in 2015 with the allocation of time from May to December Belan. The method used is the method of terraced lanes to two lanes, each lane there are four six plots, each individual tree (Plot 10 x 10 meters) to the level of 5 x 5 m saplings and seedlings to 2 x 2 m. The focus of the parameters analyzed in this study is the degree of damage to the mangrove, composition and structure, chemical and physical parameters morphometric leaf structure. The output of this research is to add insight knowledge, especially with regard to the level of damage and mangrove vegetation. After reporting the progress of the final results in this study that the findings of the field, there are four types of mangrove ie Sonneratia alba, Sonneratia casseolaris, Avicenia officinalis, and Rhizopora sp. The type of dominant vegetation is the type Sonneratia alba with important value index poho level, (IVI = ....%), Level Stake (IVI = ... ..%) Seedlings, (IVI = ...%). Results of analysis of mangrove forest vegetation density in Labuhan Sawo Sumbawa Besar classified medium category with Value (IVI = 1099.56 tree). Results of analysis of Physical and Chemical Parameters in the study area is for temperatures ranging from 30, 1 C. Salinity About 152 ppm. And PH 6.74. From the results of the study of temperature, salinity, and pH of the growth of mangroves in Labuhan Sawo still qualify optimum weeks to grow and develop properly. The results of the analysis Morphometrics leaves at four stations. At Station 1 at 16.87%, station 2 at 17.25%. Station 3 at 17.69% and 18.51% at station 4. This means that overall the value of mangrove found there was a tendency kooefesien morphometric leaf morfometriknya experienced dispersal, meaning the leaves are unhealthy. As a recommendation in this area should be the rehabilitation of mangrove ecosystems in the region Labuhan Sawo Sumbawa, then build kemitaraan or cooperation Stakeholder linked to local communities by replanting mangrove trees and make regulations concerning laragan over the puncture of land in coastal areas that could potentially damage the mangrove ecosystem ,