Long Term Study

Long Term Study

Aspen/Spruce Stand Development The design of the Long-Term Study involves planting white spruce seedlings in recently clearcut areas where aspen regeneration had already been established. Spruce seedlings were planted in both the plot and buffer areas. For the first 5 years, vegetation is controlled by clipping or using plastic mulch mats within a 40 to 50 cm radius of the spruce. After 5 years, both the spruce and aspen are thinned to desired treatment densities. The objectives of the thinning are to achieve desired densities but retain potential crop trees at relatively uniform spacing. The study uses a randomized block design with each agency setting up and maintaining one block, comprised of two installations. Each installation consists of two replications of a series of 15 plots

 Long Term Study Measurement Schedule

Company or Agency
Agency Code
Site
Year Spruce Established
Measurements Including 2007
Alberta Sustainable Resource Development
SRD
Med
1992
2001
15
6
Alberta-Pacific Forest Industries Inc.
ALP
High
Med
1994
2001
14
6
Canadian Forest Products Ltd.
CFR
High
Med
2000
2001
7
6
Daishowa-Marubeni International Ltd.
DMI
High
Med
1992
1992
15
15
Louisiana-Pacific Canada Ltd., Manitoba
LPC
High
Med
1998
1998
9
9
Louisiana-Pacific Canada Ltd., Dawson Creek
LPD
High
Med
2001
2004
7
4
Northwest Territories Resources, Wildlife and Economic Development
NWT
High
Med
1993
1993
14
14
Alberta Plywood
WFR
High
Med
1992
1993
13
15
Weyerhaeuser Company, Alberta Forestlands
WGP
High
Med
1991
1991
16
16
Domtar Inc., Saskatchewan
WPA
High
Med
1990
1990
17
17
Saskatchewan Environment and
Resource Management
SRM
High
Med
1992
1992
15
15