Table 3. The soil characteristics at the five measurement points in the Arboretum of the Faculty of Forestry and Environment, IPB University, Bogor, Indonesia

Measurement point	pH	C-organic (%)	Three main fractions (%)			Soil texture
			Sand	Silt	Clay
North	4.78	2.63	8	12	80	Clay
East	4.60	1.96	10	10	80	Clay
South	4.58	1.91	10	13	77	Clay
West	4.54	2.66	12	12	76	Clay
Center	4.55	2.14	14	10	76	Clay
Average	4.61	2.26	10.3	13.8	77.8	Clay