Tree Diversity and Community Composition of the Tutong White Sands, Brunei Darussalam: A Rare Tropical Heath Forest Ecosystem

Table 2

Component loadings for first two principal components, PC1 and PC2, from principal component analysis of soil and environmental variables. PC1 and PC2 account for 40.0% and 28.3% of total variance, respectively. Variables with the highest loadings are indicated in bold.

Variables	PC1	PC2
Total nitrogen	0.47	−0.32
Total phosphorus	0.48	−0.14
pH	0.24	0.91
Gravimetric water content	−0.47	0.13
Canopy openness	−0.33	0.03
Litter depth	0.41	0.17