KOMPOSISI DAN KEANEKARAGAMAN TUMBUHAN BAWAH PADA TEGAKAN AKASIA DI TAMAN NASIONAL BALURAN JAWA TIMUR
ABSTRACT: The research was
done in Baluran National Park, Banyuwangi East Java in April to June 2004. The
objectives of this research are to determine species composition, importance value
of species, diversity index and evenness index, similarity index, distribution
pattern of species, and species association. This research used quadratic
method. The determination of the species distribution was calculated using
Poisson distribution formula. The determination of association was calculated
using contingency table and classification of community using similarity index
formula and cluster analysis. The results of this research indicated that,
there were 63 species of plants including 18 family. The importance value was
between 0, 97-42,58 and species with high and medium importance value are
Brachiaria reptans, Tespesisa lanpas, Oplismenus burmanii, Dichantium
coricosum, Axonopus compressus, and Synedrella nudiflora. The diversity index
was between 1, 1504-2, 7556 and evenness index was between 1, 1067-1, 7854. The
distribution pattern of species indicated that 16 species were distributed in a
clumped, 5 species were in a reguler, and 4 species were at random distribution
pattern. The grass-group tend to have a clumped distribution pattern, and
non-grass-group tend to have a reguler or random distribution pattern. The
determine association indicated that 6 species had very high association index
:: Brachiaria reptans, Dichantium coricosum, Tespesia lanpas, Achyrantes
aspera, Stachytarpeta indica, Axonopus compressus and Oplismenus burmanii. The
result of classification community indicated that savanna Baluran National Park
can be devided three group (a). Open savanna no A. nilotica stand, (b). Savanna
with density of A. nilotica stand 1500-3000 individuals/ha, and (c). savanna
with dense A. nilotica stand > 3000 individuals/ha.
KEYWORDS: Acacia nilotica;
Species Composition; Importance Value; Diversity Index; Similarity Index;
Evenness Index; Distribution Pattern; Life Form; Association; Cluster Analysis;
Savanna; Baluran National Park
Penulis: Djufri
Kode Jurnal: jpbiologidd100060
