Hardwood-Pine Mixedwoods Stand Dynamics following Thinning and Prescribed Burning

Fire Ecology

Table 5 Stem density ha⁻¹ for stems of all species by three size classes for all trees ≥3.8 cm dbh under three thinning (0 = no thinning, light = residual basal area 17.2 m² ha⁻¹, and heavy = residual basal area 11.5 m² ha⁻¹) and three prescribed burning regimes (0Rx = no fire, 1Rx = 1 fire in 7 yr, 3Rx = 3 fires in 7 yr) on the William B. Bankhead National Forest, Alabama, USA. Time 0 reflects pre-treatment, Time 1 is post thin and post first burn, Time 2 is post second burn, Time 3 is post third burn.

Treatment	Dbh size class (cm)	Time 0	Time 1	Time 2	Time 3	T3 to T0 change (%)
	3.8 to 5.2	336	257	173	128	−61.8
0/0Rx	5.3 to 10.2	524	504	405	311	−40.6
	≥10.3	865	865	830	776	−10.3
	3.8 to 5.2	351	292	193	89	−74.6
0/1Rx	5.3 to 10.2	781	751	603	410	−47.5
	≥10.3	1043	988	914	840	−19.3
	3.8 to 5.2	405	336	232	143	−64.6
0/3Rx	5.3 to 10.2	791	751	642	489	−38.1
	≥10.3	1181	1161	1102	1058	−10.5
	3.8 to 5.2	217	74	40	15	−93.2
Light/0Rx	5.3 to 10.2	430	143	99	79	−81.6
	≥10.3	885	346	336	326	−63.1
	3.8 to 5.2	331	84	40	20	−94.0
Light/1Rx	5.3 to 10.2	776	237	99	40	−94.9
	≥10.3	1053	361	331	301	−71.4
	3.8 to 5.2	400	69	49	35	−91.4
Light/3Rx	5.3 to 10.2	667	193	133	94	−85.9
	≥10.3	959	311	301	292	−69.6
	3.8 to 5.2	247	35	15	10	−96.0
Heavy/0Rx	5.3 to 10.2	593	104	59	49	−91.7
	≥10.3	1043	247	237	237	−77.3
	3.8 to 5.2	272	89	5	0	−100.0
Heavy/1Rx	5.3 to 10.2	682	213	133	99	−85.5
	≥10.3	998	242	232	222	−77.7
	3.8 to 5.2	262	44	20	15	−94.3
Heavy/3Rx	5.3 to 10.2	514	104	44	35	−93.3
	≥10.3	964	287	282	262	−72.8