Long-Term Northeastern Silvicultural Treatment Evaluations
(References on
Next Page ) |
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Authors |
State |
Years |
Start Age |
Site Index |
Costs |
MVI |
Annual $/Ac
Heavy Cut |
NPV |
Annual $/Ac
Uncut |
NPV |
Annual $/Ac
Best Mgt |
NPV |
Price Year |
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Niese et al |
WI |
1971 to 1992 |
~50 |
SM 64-68 |
yes |
yes |
44 |
-247 |
72 |
0 |
100 |
542 |
1990 |
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Miller |
WV |
1950 to 1983 |
~45 |
RO 80 |
no |
no |
39 |
365 |
46 |
426 |
70 |
654 |
1983 |
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Erickson et al |
MI |
1956 to 1988 |
~25 |
SM 64-69 |
no |
no |
17 |
136 |
43 |
no data |
46 |
574 |
1988 |
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Lu & Buongiorno* |
WI |
1966 to 1984 |
unknown |
unknown |
yes |
no |
no data |
-52 |
no data |
no data |
no data |
245 |
1990 |
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Hseu & Buongiorno* |
WI |
1966 to 1984 |
unknown |
unknown |
no |
yes |
12 |
no data |
12 |
no data |
29 |
no data |
1985 |
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Solomon & Leak** |
(NH,VT) |
not stated |
unknown |
SM 70 |
no |
no |
no data |
no data |
11 |
no data |
23 |
no data |
1983 |
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Averages |
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28 |
51 |
37 |
213 |
54 |
504 |
1987 |
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COSTS & MVI NOTES: Costs include only marking and sales administration. |
MVI indicates whether or not real market value increases are included in the calculations. |
| |
HEAVY CUT NOTES: |
BEST MGT NOTES: |
Niese et al 6" DBH |
Niese et al 60 sq ft residual selection with q-value 1.3 |
Miller 5" DBH |
Miller 15.5" DBH diameter limit |
Erickson et al 5" DBH |
Erickson et al 16" DBH diameter limit |
Lu & Buorgiorno 5" DBH |
Lu & Buorgiorno 15" DBH diameter limit for high value species, 10" DBH for low value species
|
Hseu & Buongiorno all treatments |
Hseu & Buongiorno 77 sq ft residual, only grade hardwood species |
(heavy cut, uncut, other) |
Solomon & Leak quality line thinnings |
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NPV NOTES: |
Niese et al NPVs are in 1972 (start of period) @ 4% compared to uncut control. |
Miller NPVs are really FV (future value) in 1983 (end of period) @ 6%--discounted for 33 years @ 4%.
|
Erickson et al NPVs are really MFVs (managed forest values = present values of projected future returns) in 1988 @ 4%. |
Lu & Buongiorno NPVs are soil rents in 1984 @ 3%. |
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OTHER NOTES: |
Wisconsin and Michigan studies are for northern hardwoods. West Virginia study is for oak-hardwoods. |
*Results are from computer simulation models based on state-wide forest inventory data. |
**Results are from computer simulation models based on regional data for New England. |
| |
Karl Davies, Consulting Forester |
Northampton, MA |
August, 1999 |
