| Title: |
The Effect of Several Intensities
on Cutting Advanced Regeneration
|
| Objective: |
To determine the effect of 4 levels of cutting on advanced
regeneration present prior to cutting and on the establishment
and growth of additional regeneration. |
| Year Established: |
1970 |
| Year Completed: |
1975 |
| Site Description: |
Kane Experimental Forest |
| Statistical Design: |
12 circular 0.001-acre plots are located in each of 4 3-acre
cutting blocks. |
| Likelihood of Locating Study Areas: |
100% |
| Experimental Treatments: |
Each of the 4 cutting blocks received one of the following
treatments during 1970: 1) uncut/no treatment, 4) removal of
33% of the overstory basal area, 3) removal of 67% of the overstory
basal area, 4) removal of 100% of the overstory basal area.
12 plots were randomly placed within each block and the center
of each plot was permanently marked with a stake. |
| Sampling Methods: |
During 1970, all vegetation on the 0.001-acre plot were tallied
for the following: 1) number of stems of all woody species present,
by species and age class, 2) percent coverage of all non-woody
plants present, by species or species group, 3) the species
and height of the dominant stem on the plot, 4) the height of
the tallest stems of black cherry, sugar maple, red maple, white
ash, and other commercial species. The overstory species composition
and density was recorded by tallying the number of trees intercepted
by a 10-factor prism, by species. The understory or reproduction
tallies above are repeated each year for 5 years to determine
changes that occur in the vegetation under each of the 4 density
levels. |
| Variables and Sampling Frequency: |
Independent:
Overstory stand density - as measured by treatment (cutting
block), or by prism counts of overstory at each milacre.
Overstory species composition - as measured by prism counts.
Initial regeneration stocking - as measured at first tally.
Many uncontrolled and unmeasured variables such as soil conditions,
seed crops, weather, etc. These are expected to be reasonably
uniform throughout the study area.
Dependent:
Number of stems of desirable species.
Number of stems of undesirable species.
Coverage of non-woody species.
Average height of tallest stem of each species.
Average height of the dominant stem.
|
| QA/QC Practices: |
Area has remained fenced since 1970. |
| Data Storage: |
Raw data by plot reside on DG and tally sheets are kept with
written instructions and detailed maps to each stand.
Annually, the raw data are transformed using the REGEN1 program
in DG Info. System. Summarized data by plot and by stand reside
in a DG-based program that can output to ASCII text files. |
| Global Change Research Applications: |
Studies of Ecosystem Processes |
| Data Availability: |
1981 |
| Publications and Reports: |
Study plan. October 1970. David Marquis.
Establishment and Progress report. February 1972. David Marquis.
Progress report. March 1973. David Marquis.
Final report. April 1977. David Marquis.
Marquis, D. A. 1973. The Effect of Environmental Factors
on Advance Regeneration of Allegheny Hardwoods, A Dissertation
presented to the Faculty of the Graduate School of Yale University
in Candidacy for the Degree of Doctor of Philosophy.
The above are office reports of U.S. Department of Agriculture,
Forest Service, Northeastern Forest Experiment Station, Warren,
PA.
|
| Contact: |
Susan Stout, USDA, Forest Service, P.O. Box 267, Irvine PA
16329. (814) 563-1040 |
| Cooperation: |
none |
