Methods to Reduce Forest Residue Volume after Timber Harvesting and Produce Black Carbon

Table 1

Mean slash pile size, soil moisture, and resulting changes in soil properties to a depth of 30 cm after slash piling burning in two seasons on two soil textures relative to the control, unburned soil at the Lubrecht Experimental Forest, Montana.

Soil texture	Burn season	Soil moisture; %	Pile size; Mg	pH	OM	C	N
				% change from unburned
Coarse	Spring	16.7	7.2	+9	−49	−50	−56
	Fall	11.8	9.8	+25	−64	−57	−63
Fine	Spring	30.0	9.6	+9	+10	+18	+17
	Fall	12.6	5.6	+12	−39	−25	−3