Tree Growth Prediction in Relation to Simple Set of Site Quality Indicators for Six Native Tree Species in the Philippines

Table 6

Stepwise multiple regressions analysis to explain growth performance in relation to site indicators.

Site Indicators				Adjusted 𝑅^2 (%)
Landscape; Position	Soil Type	Soil Texture	Soil Chemistry	S. contorta	V. parvifora	P. indicus	A. heterophyllus	D. dao	A. rhomboidea
X				5.9	1.9	29.3	9.7	6.6	31.3
	X			3.6	4.7	24.5	9.7	2.7	11.3
		X		9.5	2.3	7.4	46.1	1.5	3.5
			X	30.5	9.7	6.5	71.8	18.1	26.4
X	X			9.2	9.5	35.7	23.0	6.0	37.5
X		X		11.7	2.9	36.8	72.7	5.2	35.5
X			X	33.2	14.0	38.0	75.0	22.3	50.0
	X	X		10.9	5.2	23.8	62.7	9.4	8.5
	X		X	32.0	13.1	24.6	75.7	20.3	33.9
		X	X	38.6	8.7	16.4	71.0	20.9	24.6
X	X	X		12.1	9.7	39.4	72.7	4.9	32.7
X	X		X	33.2	13.8	37.6	70.0	21.8	44.8
X		X	X	39.8	13.3	40.0	75.6	26.3	48.0
	X	X	X	38.7	12.3	42.1	75.6	22.9	32.7
X	X	X	X	39.5	12.9	39.4	74.2	25.6	50.5