DIAMETER GROWTH OF NATURALLY REGENERATED <em>DRYOBALANOPS</em> <em>AROMATICA</em> IN PENINSULAR MALAYSIA
Keywords:Periodic annual diameter increment — thinning
This paper discusses the overall diameter growth of naturally regenerated Drfobalanops aromalica trees using results obtained from measurements taken for a period of 61 years (1915 till 1976). The plot was located at Kancing Forest Reserve, Selangor, Peninsular Malaysia. After 61 years, the achieved mean DBH was 61.4 + 2.0 cm. The periodic annual diameter increment was 0.91 + 0.01 cm year-1 (ranging from 0.4 -£ 0.01 to 1.3 + 0.07 cm year-1). Stands of plantation grown D. aromatica at Bukit Lagong Forest Reserve (5 km away) were used as comparison for growth. The growth at Kancing was significantly higher compared with that of plantation grown D. aromatica at Bukit Lagong. The thinning down to a low stocking at dancing were largely responsible for the high diameter growth of the species.