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Catalog of Long Term Research Conducted by the Northeastern Research Station

Catalog #9

Permanent Growth Plots on the Fernow Experimental Forest
1) To evaluate the effect of 3 cutting treatments on the diameter growth, height growth, length of clear stem and butt-log grade of several individual Appalachian hardwood trees. 
2) To provide permanently numbered study trees for other research such as the measurement of crown characteristics, height,/d.b.h. relationships and stand value.
Fernow Experimental Forest
Completely random with 5 0.5-acre plots as the experimental unit in each of 19 compartments for a total of 82 plots. Plot information is extrapolated to the whole compartment.
3 cutting treatments: 1) clear-cut, 2) diameter limit >5.0" d.b.h., and 3) uneven-age management selection for a) sawlogs and b) sawlogs and pulpwood. 
1 control/unmanaged area.
All trees >1.0"d.b.h. were identified, permanently marked, and periodically measured.

Tree measurements included: 
a) diameter (nearest 1/10" using a standard diameter tape) every 5 years. 
b) butt-log grade for all trees >11.0" d.b.h. determined according to Fernow Operating Procedures. 
c) clear stem total height: based upon subsamples.

All ingrowth trees were wired using the standard tree wire technique. In growth trees were assigned numbers starting at 501 for each plot. No single plot had more than one ingrowth tree. The threshold for ingrowth was 1.0".

Independent: cutting treatment (individual tree selection, clear-cut, control), site index classes 60, 70, and 80.

Dependent: diameter at 4.5', crown class (dominant, codominant, intermediate, overtopped, butt-log), total height, length of clear stems, basal area per plot, plot volume, plot stand value.

Remeasurements occurring every 5 years which varies according to compartment establishment date. 
Diameters of all marked trees were remeasured in 1983.

Data are visually compared to previously collected data. Accuracy assessments are completed after each data-collection period. Permanent employee continually supervises temporary employees.
All data were keyed into DG computer and stored on disk and magnetic tape. Standard growth plot programs were used for analyses. DG-based computer programs were written to print out field data forms and the growth results of species by crown class by d.b.h. groups.
Studies of Ecosystem Processes
partially 1994
Study plan. Neil Lamson. and Clay Smith. 1979. 
Establishment report: Neil Lamson. 1980. 
Progress report: Neil Lamson. 1984, 1988. 
The above are office reports of U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, Parsons, WV.
Thomas Schuler,  USDA Forest Service,  P.O. Box 404, Parsons WV 26287. (304) 478-2000 ext. 110.



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