KOMPOSISI JENIS DAN STRUKTUR VEGETASI HUTAN SEKUNDER RAWA GAMBUT DI DESA SUNGAI BESAR KABUPATEN KETAPANG

Abstract

Legal and illegal logging in secondary swamp forests of Sungai Besar village of Ketapang District resulted in more severe damage, which resulted in changes in the forest composition and structure types. The problem is how the structure and composition of swamp forest types as a result of illegal and legal logging, especially on tree species that in marketable. The objectives of the study were to obtain information on species composition and vegetation structure at each growth level in secondary forest of peat swamp of Sungai Besar Village of Ketapang Regency. This research was conducted on secondary forest area of peat swamp of Sungai Besar Village of Matan Hilir Selatan District of Ketapang with field survey method in the form of printed lane. Data analysis is used to calculate the Important Value Index based on the density, frequency and dominance values and determine the forest structure. The results showed that the species composition of peat swamp forests consisted of : (a) at the level of seedlings dominated by Ubar Jambu (Syzygium sp), (b) level of sapling dominated by Jampang (Melicope lunuankenda (Gaertn) TG Hartley) (c) the level of pole by the Mentibu (Dactylocladus stenostachys Oliver), and (d) the tree level by Nyatoh Ketiu (Madhuca motleyana). The vegetation structure of the overall peat swamp forest almost entirely forms a normal stand, but the number of individuals at the seedling and stake level is still low.

Keywords: forest strutkur, peat swamp forest, species composition.