Early-Stage Thinning for the Restoration of Young Redwood—Douglas-Fir Forests in Northern Coastal California, USA

Table 1

Mean tree density (stems ha⁻¹), basal area (m² ha⁻¹), quadratic mean diameter (QMD), and stand density index (SDI) of thinned and unthinned coast redwood—Douglas-fir stands at the Mill Creek Property. Significant differences (*) were determined via two-sample 𝑡-tests at 𝛼=0.05.

	Thinned			Unthinned
	Douglas-fir	Redwood	Overall	Douglas-fir	Redwood	Overall
Density (trees ha^−1)	320 (61%)	205 (39%)	525*	664 (58%)	480 (42%)	1144
Basal area (m^2 ha^−1)	31.7 (52%)	29.0 (48%)	60.7	41.1 (55%)	33.8 (45%)	75.0
QMD (cm)	36.1*	43.2*	39.7*	27.5	27.6	27.5
SDI			383*			574