International Journal of Forestry Research

Research Article

Rehabilitation of Degraded Tropical Rainforest Using Dipterocarp Trees in Sarawak, Malaysia

Table 4

Correlation between soil hardness (penetrometer counts at the depth of 0–20 cm) and seedlings survivor, relative growth rate in height (RGRheight) and diameter (RGRdiameter) during 0–24 months and 24–81 months in the secondary forest and logged forest.
SpeciesSurvivorRGRheightRGRdiameter
0–24 months24–81 months0–24 months24–81 months0–24 months24–81 months
P P P P P P
Dryobalanops beccarii —ns—ns—ns—ns—ns—ns
Parashorea macrophylla —ns—ns—ns—ns—ns—ns
Shorea macrophylla —ns—ns—ns–0.61*—ns—ns
S. ovata −0.59*—ns—ns—ns−0.83**—ns
S. parvifolia —ns—ns—ns—ns—ns—ns
S. seminis —ns—ns—ns—ns—ns—ns
S. virescens —ns—ns—ns—ns—ns—ns
Different letters indicate significant differences among species in each treatment by ANOVA with Bonferroni’s test (* , ** ).