Observations of “coarse” root development in young trees of nine exotic species from a New Zealand plot trial

New Zealand Journal of Forestry Science

Table 2 Attributes for 0-year-old trialled species

Attribute	Oak	Eucalypt	Douglas-fir	Redwood	Cherry	Blackwood	Alder	Cypress	Radiata
Trees sampled	10	10	10	10	10	10	10	10	10
Tree height (m)	0.27 (0.02)	0.36 (0.01)	0.15 (0.00)	0.37 (0.01)	0.79 (0.02)	0.72 (0.03)	0.83 (0.04)	0.42 (0.03)	0.43 (0.03)
Canopy spread (m)	0.14 (0.02)	0.24 (0.01)	0.06 (0.00)	0.23 (0.01)	0.13 (0.02)	0.19 (0.02)	0.11 (0.03)	0.19 (0.01)	0.15 (0.01)
DBH^a (mm)	-	-	-	-	-	-	-	-	-
RCD^b (mm)	9 (0.6)	6 (0.3)	3 (0.7)	5 (0.2)	9 (0.5)	8 (0.5)	13 (0.6)	8 (0.3)	7 (0.3)
Max. root diameter (m)	0.12 (0.01)	0.17 (0.02)	0.09 (0.00)	0.16 (0.01)	0.22 (0.01)	0.15 (0.02)	0.39 (0.05)	0.21 (0.02)	0.14 (0.01)
Max. root depth (m)	0.15 (0.001)	0.12 (0.001)	0.12 (0.001)	0.12 (0.001)	0.17 (0.001)	0.13 (0.001)	0.18 (0.001)	0.13 (0.001)	0.10 (0.001)
Total AGB^c (g)	4 (0.4)	6 (0.7)	1 (0.1)	5 (0.4)	11 (0.8)	13 (1.9)	18 (2.5)	14 (1.0)	13 (1.0)
Total BGB^d (g)	7 (1.0)	1 (0.1)	1 (0.1)	1 (0.3)	11 (1.1)	3 (0.5)	20 (3.0)	3 (0.3)	2 (0.2)
Total root mass^e (g)	7 (1.0)	1 (0.1)	1 (0.1)	1 (0.3)	11 (1.1)	3 (0.5)	20 (3.0)	3 (0.3)	2 (0.2)
Total root length > 1 mm (m)	0.64 (0.11)	0.59 (0.08)	0.29 (0.05)	0.71 (0.08)	1.63 (0.19)	0.53 (0.14)	4.11 (0.43)	1.34 (0.18)	0.77 (0.11)

Data are presented as means, numbers in brackets are standard error of the mean. ^adiameter at breast height, ^broot collar diameter, ^ctotal above-ground biomass, ^dtotal below-ground biomass including stump/root bole, ^etotal root mass excluding the stump/root bole