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Wisconsin's Forest Resources, 2008
From Forest Service, US Department of
Agriculture Northern Research Station
This publication provides an overview of
forest resource attributes for Iowa based on an annual inventory (2004-2008)
conducted by the Forest Inventory and Analysis (FIA) program of the U.S. Forest
Service, Northern Research Station.
These estimates, along with web posted core tables, are updated annually.
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Table 1. - Annual estimates, uncertainty, and change,
Wisconsin, 2008 |
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2008
Estimate |
Sampling error (%) |
Change
since 2003 (%) |
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Forest Land Estimates |
| Area (1,000 acres) |
16,697 |
.5 |
5.1 |
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Number of live trees 1-inch diameter or
larger (1,000,000 trees) |
10,919 |
1.1 |
2.5 |
| Biomass of live trees
1-inch diameter or larger (1,000 tons) |
603,803 |
.9 |
4.9 |
| Net volume of live trees
(1,000,000 ft3) |
23,242 |
1.0 |
5.7 |
| Annual net growth of live
trees (1,000 ft3/year) |
607-983 |
2.3 |
na |
| Annual mortality of live
trees (1,000 ft3/year) |
279,211 |
2.7 |
na |
| Annual harvest removals of
live trees (1,000 ft3/year) |
342,334 |
5.4 |
na |
| Annual other removals of
live trees (1,000 ft3/year) |
17,507 |
17.2 |
na |
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Timberland Estimates |
| Area (1,000 acres) |
16,440 |
.5 |
5.2 |
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Number of live trees 1-inch diameter or
larger (1,000,000 trees) |
10,755 |
1.1 |
2.5 |
| Biomass of live trees
1-inch diameter or larger (1,000 tons) |
595,214 |
0.9 |
5.0 |
| Net volume of live trees
(1,000,000 ft3) |
22,911 |
1.0 |
5.8 |
| Net volume of
growing-stock trees (1,000,000 ft3) |
20,944 |
1.0 |
7.8 |
| Annual net growth of
growng-stock trees (1,000 ft3/year) |
586,150 |
2.4 |
-10.9 |
| Annual mortality of
growing-stock trees (1,000 ft3/year) |
204,072 |
3.0 |
7.0 |
| Annual harvest removals of
growing-stock trees (1,000 ft3/year) |
294,766 |
5.5 |
34.5 |
| Annual other removals of
growing-stock trees (1,000 ft3/year) |
32,299 |
18.6 |
-76.8 |
| Note: Sampling
errors and error bars shown in the tables and figures in this report
represent 68% confidence intervals for the estimated values.
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Table 2. - Top 10 tree species by
statewide volume estimates, Wisconsin, 2008 |
| Rank |
Species |
Volume
of live trees
on forest land (1,000,000 ft3) |
Sampling
error
(%) |
Change
since
2003(%) |
Volume
of sawtimber trees on timberland (1,000,000
bd ft) |
Sampling
error
(%) |
Change
since
2003 (%) |
| 1 |
Sugar Maple |
2,511.6 |
3.2 |
2.5 |
5646.3 |
4.6 |
11.7 |
| 2 |
Red Maple |
2,414.5 |
2.7 |
8.0 |
4,217.2 |
4.4 |
24.8 |
| 3 |
Northern Red Oak |
1,873.8 |
4.0 |
2.6 |
6,819.5 |
4.6 |
12.0 |
| 4 |
Quaking Aspen |
1,783.7 |
3.1 |
-4.4 |
3,344.1 |
4.7 |
9.0 |
| 5 |
Red Pine |
1,507.6 |
5.5 |
8.1 |
5,967.3 |
6.2 |
10.3 |
| 6 |
Eastern White Pine |
1,471.1 |
5.9 |
14.8 |
6,848.5 |
6.5 |
19.5 |
| 7 |
American Basswood |
1,192.3 |
4.0 |
5.2 |
3,423.5 |
4.9 |
16.0 |
| 8 |
White Oak |
844.9 |
4.7 |
2.5 |
2,680.8 |
5.8 |
11.0 |
| 9 |
Northern White Cedar |
818.2 |
6.4 |
11.7 |
2,225.9 |
7.7 |
18.8 |
| 10 |
Bigtooth Aspen |
719.5 |
6.0 |
-2.4 |
2,080.9 |
7.4 |
5.5 |
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Other softwood species |
2,028.7 |
2.9 |
4.9 |
5,370.8 |
4.2 |
4.1 |
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Other hardwood species |
6,075.9 |
1.8 |
9.1 |
12,617.8 |
2.8 |
17.7 |
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All species |
23,241.8 |
1.0 |
5.7 |
61,242.7 |
1.5 |
13.8 |
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