Change in Soil and Forest Floor Carbon after Shelterwood Harvests in a New England Oak-Hardwood Forest, USA

Table 1

ANOVA of soil, litter, and coarse woody debris (CWD) carbon mass per area by treatment.

	df	Surface soil		Litter		CWD		Total
		F value	P	F value	P	F value	P	F value	P
Treatment	1	28.273	0.000***	5.5742	0.020*	25.314	0.000***	0.024	0.877
Site	14	5.188	0.000***	1.5889	0.099	3.868	0.000***	2.977	0.001***
Treatment × site	14	4.649	0.000***	1.2263	0.272	2.041	0.024*	3.887	0.000***

Significance codes are as follows: ***0.001, **0.01, and *0.05. Treatment refers to shelterwood harvest versus control. Site refers to replicate sites examined that span a 20-year period since harvest.