Effects of Soil Compaction and Relative Light Intensity on Survival and Growth Performance of Planted Shorea macrophylla (de Vriese) in Riparian Forest along Kayan Ulu River, Sarawak, Malaysia

Table 2

Mean annual increments of height (MAIH), diameter at breast height (MAID), and volume (MAIV) of planted Shorea macrophylla in reforestation sites.

Variables	Unit	SPD96(20 years-old); (n=126)	SPD97(19 years-old); (n=116)	SPD98(18 years-old); (n=105)	SPD99(17 years-old); (n=55)
MAIH	m year^−1	0.91 ± 0.04ab	1.09 ± 0.07b	0.85 ± 0.05a	0.94 ± 0.06ab
MAID	cm year^−1	0.83 ± 0.04c	0.67 ± 0.03b	0.49 ± 0.03a	0.48 ± 0.03a
MAIV	m^3 ha^−1 year^−1	0.016 ± 0.002ns	0.011 ± 0.002ns	0.021 ± 0.011ns	0.008 ± 0.006ns

Means ± standard error: values in the same row followed by different letters indicate significant differences among sites at P < 0.05 using Scheffe’s test; ns: no significant differences.