Development and evaluation of an individual tree growth and yield model for the mixed species forest of the Adirondacks Region of New York, USA

Forest Ecosystems

Table 1 Individual tree attributes by forest, which are Dubuar Memorial Forest (DMF), Huntington Wildlife Forest (HWF), Pack Demonstration Forest (PDF), Pack Experimental Forest (PEF), and Shirley Forest (SF)

Attribute^a	N	Mean	SD	Minimum	Maximum
Dubuar Memorial Forest (DMF)
DBH	5765	28.39	9.76	12.70	79.76
HT	1058	21.22	4.95	3.96	36.58
BHT	1053	15.23	5.08	1.83	30.18
∆DBH	2423	0.24	0.16	0	1.02
∆HT	435	0.19	0.18	0	0.98
PS	2831	87.35	13.00	21.43	100.00
Huntington Wildlife Forest (HWF)
DBH	21170	31.62	13.97	11.18	100.84
HT	4302	21.45	5.01	1.52	38.10
BHT	3938	15.42	4.98	1.52	29.57
∆DBH	11357	0.28	0.17	0	1.27
∆HT	1827	0.18	0.15	0	0.91
PS	13167	88.05	11.53	0	100.00
Pack Demonstration Forest (PDF)
DBH	5795	21.17	11.64	9.14	88.39
HT	869	20.08	6.15	5.49	37.80
BHT	851	13.83	6.34	2.44	30.18
∆DBH	2083	0.18	0.13	0	0.99
∆HT	327	0.17	0.14	0	0.82
PS	2422	88.62	8.43	61.73	100.00
Pack Experimental Forest (PEF)
DBH	1706	29.12	11.61	12.70	80.01
HT	359	21.49	3.62	10.97	31.09
BHT	359	14.79	3.52	3.96	25.60
∆DBH	803	0.26	0.15	0	1.12
∆HT	147	0.24	0.24	0	0.96
PS	1037	80.12	12.08	40.00	100.00
Shirley Forest (SF)
DBH	11060	23.94	9.47	9.40	95.50
∆DBH	8772	0.31	0.24	0	1.49
PS	9334	94.72	11.80	0	100.00
Overall
DBH	45496	27.92	12.77	9.14	100.84
HT	7557	21.17	5.24	1.52	38.10
BHT	7150	14.63	5.27	1.22	30.18
∆DBH	25438	0.28	0.19	0	1.49
∆HT	2736	0.18	0.16	0	0.98
PS	28791	89.17	12.01	0	100.00

^a DBH is diameter at breast height (cm), HT is total height (m), BHT is bole height (m), ∆DBH is annual diameter increment (cm∙yr^–1), ∆HT is annual height increment (m∙yr^–1), and PS is probability of survival (here percentage of live trees per plot by measurement period, %)