Citation
Ahmad Zuhaidi Yahya, . and van Gardingen P. R., . and Grace J., . Tree growth and potential yield of plantation grown Dryobalanops aromatica of Peninsular Malaysia. pp. 369-386. ISSN 0128-1283
Abstract
The study focused on the growth of 50 to 70 years old planted Dryobalanops aromatica potential yield and factor affecting its growth within the research area of the Bukit Lagong Forest Reserve at the Forest Research Institute Malaysia (FRIM). Trees were evaluated on periodic annual diameter increment over a period of four years (1997-2000) consisting of six experimental plots with sizes ranging from 0.21 to 0.96 ha. The observed periodical annual diameter increments (Pobs) were significantly different between plots and years with a mean of 0.28 0.01 cm year-1 (ranging from 0.21 0.02 to O.43 0.04 cm year-1). The Pobs already falls below the mean annual diameter increment indicating that growth of the species had passed the culmination point of the mean annual increment. Two of the six plots (2 and 6) had significantly higher Pobs than the remaining plots. Both of these plots had lower stand densities (161 and 18 stem ha-1 respectively) and maintained the highest diameter increments throughout the observation period. The occurrence of a prolonged drought in 1997 did not effect these plots much. Plot 5 with the highest stocking had the lowest rate for Pobs at 0.21 0.02 cm year-1. Assuming all trees Pobs 50 cm were harvested in 2000 the potential yield ranged from 61.3 to 425.8 m3 ha-1.
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Abstract
The study focused on the growth of 50 to 70 years old planted Dryobalanops aromatica potential yield and factor affecting its growth within the research area of the Bukit Lagong Forest Reserve at the Forest Research Institute Malaysia (FRIM). Trees were evaluated on periodic annual diameter increment over a period of four years (1997-2000) consisting of six experimental plots with sizes ranging from 0.21 to 0.96 ha. The observed periodical annual diameter increments (Pobs) were significantly different between plots and years with a mean of 0.28 0.01 cm year-1 (ranging from 0.21 0.02 to O.43 0.04 cm year-1). The Pobs already falls below the mean annual diameter increment indicating that growth of the species had passed the culmination point of the mean annual increment. Two of the six plots (2 and 6) had significantly higher Pobs than the remaining plots. Both of these plots had lower stand densities (161 and 18 stem ha-1 respectively) and maintained the highest diameter increments throughout the observation period. The occurrence of a prolonged drought in 1997 did not effect these plots much. Plot 5 with the highest stocking had the lowest rate for Pobs at 0.21 0.02 cm year-1. Assuming all trees Pobs 50 cm were harvested in 2000 the potential yield ranged from 61.3 to 425.8 m3 ha-1.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Dryobalanops |
| AGROVOC Term: | Plantations |
| AGROVOC Term: | Yields |
| AGROVOC Term: | Forest reserves |
| AGROVOC Term: | Diameter increment |
| AGROVOC Term: | Drought |
| AGROVOC Term: | Stand density |
| AGROVOC Term: | Forest stands |
| AGROVOC Term: | Sandy soils |
| AGROVOC Term: | Imperata cylindrica |
| Geographical Term: | Malaysia |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 26 Apr 2025 16:54 |
| URI: | http://webagris.upm.edu.my/id/eprint/22326 |
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