Species Composition and Tree Structure at Various Altitudes in Gunung Halimun Salak National Park

Istomo
Hartoyo, Adisti Permatasari Putri
Azizah, Ummiati

Jurnal Silvikultur Tropika (JST)
Vol. 15 No. 02 (2024): Jurnal Silvikutur Tropika

rainforest ecosystems. This study aimed to estimate the species composition and tree structure at various altitudes in GHSNP. The study used vegetation analysis through plots measuring 100 m × 20 m with three replications at three altitude ranges: <1000 masl (lowland), 1000-1500 masl (sub-montane), and >1500 masl (montane). At altitudes <1000 and 1000-1500 masl, Pinus merkusii and Schima wallichii are the dominant species, while Dacrycarpus imbricatus dominates at altitudes >1500 masl. The total volume of trees at each altitude range is 473.9 m3/ha, 221.67 m3/ha, and 201.11 m3/ha, respectively. As altitude increases, tree volume decreases. The species diversity index (H') value at all three altitudes is classified as medium, with a 1≤H'≤3 value. Keywords: Dacrycarpus imbricatus, Pinus merkusii, Schima wallichii, West Java