Komposisi Dan Struktur Komunitas Tumbuhan Bawah Di Areal Kebakaran Gunung Masigit Dan Studi Awal Regenerasi Alami Di Areal Kebakran Gunung Masigit, Taman Nasional Gunung Gede Pangrango.

Peneliti: Siagian, Reinhard

Topik : Flora

Tahun : 2000

No. Pustaka:

Abstrak
The objective of the research is to find out thye composition and structure of undergrowth forest a community after forest fire in Gunung Masigit, GPNP. Data colection were caried out between April and September 1999 at the three areas, i.e. upper slope, ridge. Four transect of  275 m were established within each site; each two transect established in burnt and unburnt forest. A Long the each 275 m transect 25 plots of 1 x 1 m were established with the interval of 10 m. A total of 43 species belong to 39 genera and 35 families were recorded within 150 plots of unburnt site. The dominant species of the unburnt site were Dipteris conjugata, Blechnum Finlaysonianum,Impatiens javensis, Urena lobalata, Pteris sp, Vitis adnanta, Dendrochyllum sp, Cyperus sp. Based on the their important value indices (I V I) the plant communities in lower and upper slopes were called Dipteris conjugata community, while in ridge site was in ridge site was an association of I Dipteris conjungata and Blechnum finlaysonianum. The composition of undergrowth forest community observed during this study clearly indicated that G.Masigit has experienced some kind of disturbance before the fire in the late 1997. Field water capacities of the dominant plants of the undergrowth forest were about 30%. It is believed that this condition makes the forest is under high risk of fires . the species richness of born site was  higher than in uburnt sites due to occurent of the socondary species such as Melastoma balatrichum and Omalanthus populneus, that were not found in the unburnt site. There were 38 species found on the ridge, as the richest site, followed by upper slope 33 species, and the lower slope 21 species. Based on the life form, the undergrowth species in burning area can be classified to 18 species of trees, 6 species of shrubs, 9 species of lianas, 15 species of herbs, and 5 species of ferns. The undergrowth forest community in burnt site was dominated by herbs and ferns indicated that the comunity was still in an early succession. The IVI of plant comunities in burnt site showed that the lower slope was the association of pteris sp-Elastostemma sp, the upper slope was a community of Cyperus sp, and the ridge was the associatiton of Cyperus sp-Pteris sp.