Table 2.

Soil parameters at Hubbard Brook Experimental Forest (HBEF)

Soil parameter	Ref.	Unit	Soil horizon
			O	A	E	Bhs	Bs1	Bs2	Bs3	Cd
Horizon thickness	1	M	0.07	0.07	0.03	0.04	0.1	0.1	0.55	0.11
Bulk density	2	kg/m3	177.0	351.6	997.3	666.3	658.7	795.3	874.4	1100.3
Soil surface area	3	106 m2/m3	0	0.13	0.59	0.22	0.32	0.48	0.72	1.10
Kgibb	4	log10(m6/eq2)	6.5	6.5	6.5	7.6	7.6	8.6	8.6	9.2
Cation exchange capacity	5	meq/kg	175	72.5	25.4	147.2	104.3	54.6	38.8	13.9
Base saturation	5	Fraction	0.5	0.64	0.16	0.05	0.03	0.02	0.04	0.07
Field capacity	2	m3/m3	0.79	0.47	0.12	0.2	0.23	0.17	0.17	0.14
Wilting point	2	m3/m3	0.43	0.21	0.04	0.08	0.09	0.06	0.06	0.04
Field saturation	2	m3/m3	0.87	0.88	0.61	0.72	0.72	0.67	0.65	0.58
Fine root distribution	6	% of total	26	24	10	8	16	12	4	0
Minerals	7	% of total
K-feldspar			–	15.70	15.70	13.82	6.31	7.11	9.37	12.10
Muscovite				0.52	0.52	3.85	13.43	13.13	10.37	8.51
Hornblende				1.50	1.50	1.85	1.82	3.09	3.16	3.16
Plagioclase				17.29	17.29	18.83	19.66	22.07	20.35	22.67
Fe-chlorite				0.79	0.79	6.08	3.69	2.21	2.09	2.02
Mg-vermiculite				0.17	0.17	0.26	0.23	0.32	0.35	0.41
Apatite				0.15	0.15	0.28	0.32	0.41	0.38	0.45
Kaolinite				0.30	0.30	2.25	5.31	5.93	6.06	4.97
Calcite				0.35	0.35	0.35	0.35	0.37	0.30	0.43

⁽¹⁾Bailey (personal communication), Federer (1992)

⁽²⁾Calculated according to Balland et al. (2008) from soil texture (J. Aherne, personal communication)

⁽³⁾Calculated according to Phelan et al. (2014) from soil texture (J. Aherne, personal communication)

⁽⁴⁾Warfvinge and Sverdrup (1994)

⁽⁵⁾Bailey (personal communication), Johnson et al. (1991b)

⁽⁶⁾ Yanai et al. (2006)

⁽⁷⁾J. Aherne (personal communication)