Distribution analysis and productivity of Myristicaceae in 50-ha plot at Pasoh Forest Reserve, Negeri Sembilan, Malaysia

A study on distribution and productivity of Myristicaceae was carried out in a 50-ha plot at Pasoh Forest Reserve, Negeri Sembilan, Malaysia. Data were obtained from Forest Research Institute of Malaysia, of census from 1985 to 2000 with the focus on the 2000 data. Based on the 2000 data, a total of 15,284 stems of Myristicaceae was recorded, representing 5 genera and 30 species. Knema contains 13 species and a total of 391 new individuals were recorded whilst 1,253 individuals were observed dead compared to the 1995 data. Analysis of distribution pattern using Morisita's Index of Dispersion showed random distribution with value Id = 1.02. Estimate of total aboveground biomass for the year 2000 was at 73.35 t/ha. Knema contributed the highest biomass with an estimate of 28.28 t/ha, species-wise, Horsfieldia sucosa indicated the highest biomass estimated at 6.61 t/ha. Total basal area was 44.01 m2/50 ha or 0.88 m2/ha. Knema contributed the highest total basal area with 19.90 m2/50 ha or 0.40 m2/ha. The most dominant species in term of basal area was Knema furfuracea with an area of 4.16 m2/50 ha or 0.08 m2/ha. The most abundant genus was Knema with a total of 11,211 individuals and the most abundant species was Knema laurina with 4,722 stems. Overall, the family consists of high number of small trees based on low estimation of above ground biomass and low basal area.

Zohari Ahmad Fitri, Mohd. Nizam Mohd. Said, A. Latiff, M.N. Nur Supardi, K. Abd Rahman, & D.F. Christine
Malaysian Forester