Determination of Energy Properties of Fuelwood from Five Selected Tree Species in Tropical Highlands of Southeast Ethiopia

Table 2

Experimental results and principal component analysis (PCA) on five tree species on their density and moisture, ash, volatile matter, and fixed carbon contents.

Species name	Diameter (cm)	Density (g/cm^3)	Moisture contents (%)	Ash contents (%)	Volatile matter contents (%)	Fixed carbon contents (%)
O. africana	7.367	0.914^a	5.908^c	0.994^e	70.710^d	22.388^a
A. nilotica	6.400	0.857^b	7.030^bc	1.971^d	71.495^dc	19.503^b
A. etbaica	6.300	0.779^c	7.819^bc	2.741^c	73.644^c	15.796^c
A. seyal	6.667	0.665^d	8.279^ba	3.353^b	76.790^b	11.578^d
A. schimperi	5.800	0.553^e	9.927^a	4.445^a	79.673^a	5.954^e

Values followed by the same superscript letters in each column are not significantly different at according to Duncan’s multiple range tests.