Variation in black spruce (Picea mariana (Mill.) BSP) wood quality after thinning

Table 2 Ring characteristics and MOE variation by stand

Site	RW variation (%)	Variation in EWW proportion (%)	Variation in LWW proportion (%)	RD variation (%)	MOE variation (%)
HEB95	97.6	101.9	95.6	98.6	115.8
HEB96-1	113.0	90.0	112.0	94.6	107.1
HEB96-2	105.7	99.8	96.0	102.3	106.3
HEBC	96.8	96.7	105.2	101.6	103.8
LB95	109.0	101.4	90.6	95.2	110.8
LBC	91.4	94.1	115.3	96.5	94.9
LC96	96.9	94.9	107.8	97.3	101.7
LCC	123.1	94.4	95.4	97.7	108.2
LJ96	110.3	99.4	103.0	100.1	116.2
LJC	86.7	93.3	115.7	98.0	108.0
MV95	99.5	199.2	125.8	97.0	112.6
MV96	175.6	54.2	62.3	98.2	113.6
MVC	79.3	110.6	114.8	102.4	94.0
SL97	97.8	105.4	101.2	95.0	118.7
SLC	107.4	86.6	148.5	100.6	107.7
Mean for CT stand	111.7	105.1	99.3	97.6	111.4
Mean for C stands	97.5	95.9	115.8	99.5	102.8

The percentage corresponds to the ratio of mean values by stand of ring characteristics and MOE for the 10 years preceding thinning year on the mean values by stand of ring characteristics and MOE ring characteristics for the 10 years following thinning year
RW ring width, EWW early-wood width, LWW late-wood width, RD ring density, MOE modulus of elasticity, CT commercial thinning, C controls

ISSN: 1297-966X