anita rose usda forest service september 10 th , 2003
DESCRIPTION
Virginia’s Forests. Anita Rose USDA Forest Service September 10 th , 2003. Virginia’s Forests ~. Preliminary results from the 2001 survey. Area Trends Age Structure Trends Volume Trends Growth & Removal Trends Mortality Trends Coarse Woody Debris. Area Trends. Forest land. - PowerPoint PPT PresentationTRANSCRIPT
Virginia’s Forests
Anita RoseUSDA Forest Service September 10th, 2003
Virginia’s Forests ~
• Area Trends
• Age Structure Trends
• Volume Trends
• Growth & Removal Trends
• Mortality Trends
• Coarse Woody Debris
Preliminary results from the 2001 survey
Area Trends
Forest land
0
5
10
15
20
25
1630 1907 1940 1957 1966 1977 1986 1992 2001
Mill
ion
Ac
res
Year
Area ~ CurrentAcres of forest land by unit and land class
0.0
2.0
4.0
6.0
Coastal Plain Piedmont Mountains
Non-Forest Land Timberland Reserved Other Forest
Mill
ion
Ac
res
Area TrendsAcres of timberland by forest management type
0.0
2.0
4.0
6.0
8.0
10.0
Pine plantation Natural pine Oak-pine Uplandhardwood
Lowlandhardwood
1992
2001
Mill
ion
Ac
res
Management Type
Area TrendsAcres of timberland by ownership
0.0
2.0
4.0
6.0
8.0
10.0
12.0
National forest Other Public Forest industry Individual Corporate
1986
1992
2001
Mill
ion
Ac
res
Ownership Class
Age Structure Trends
Softwoods
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0-10 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81+
1992
2001
Age Class (years)
Mil
lio
n a
cres
Age Structure Trends
Hardwoods
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0-10 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81+
1992
2001
Age Class (years)
Mil
lio
n a
cres
Volume Trends
Live trees by survey year
0.0
5.0
10.0
15.0
20.0
25.0
1940 1957 1966 1977 1986 1992 2001
Softwoods
Hardwoods
Year
Bill
ion
cu
. ft.
Volume Trends
Live softwoods by species
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Loblolly pine Virginia pine Eastern whitepine
Other softwoods
1992
2001
Species
Bill
ion
cu
. ft.
Volume Trends
Live hardwoods by species
0.0
1.0
2.0
3.0
4.0
5.0
6.0
White oaks Red oaks Yellow-poplar
Soft maple Hickory Other
1992
2001
Bil l
ion
cu
. ft.
Species
Volume Trends
Live softwoods on timberland by diameter class
0.0
0.3
0.6
0.9
1.2
1.5
6 8 10 12 14 16 18 20 22+
1992
2001
Diameter Class (inches)
Bill
ion
cu
. ft.
Volume Trends
Live hardwoods on timberland by diameter class
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
6 8 10 12 14 16 18 20 22+
1992
2001
Diameter Class (inches)
Bill
ion
cu
. ft.
Growth and Removal Trends
Softwoods ~ growing stock
0.00
50.00
100.00
150.00
200.00
250.00
300.00
350.00
1957-66 1966-77 1977-86 1986-92 1992-01
Net growth Removals
Mill
ion
cu
. ft.
Growth and Removal Trends
Hardwoods ~ growing stock
0.00
130.00
260.00
390.00
520.00
650.00
1957-66 1966-77 1977-86 1986-92 1992-01
Net growth Removals
Mill
ion
cu
. ft.
Mortality Trends
0.00
30.00
60.00
90.00
120.00
150.00
1957-67 1967-77 1977-86 1986-92 1992-02
Softwood Hardwood
Mill
ion
cu
. ft.
Softwoods & Hardwoods ~ Growing stock
Net Annual Growth and Removals ~ 2001
Softwoods ~ all live
0.00
50.00
100.00
150.00
200.00
250.00
National forest Other public NIPF Forest industry
Growth
Removals
Ownership
Mill
ion
cu
. ft.
Net Annual Growth and Removals ~ 2001
Hardwoods ~ all live
0.00
100.00
200.00
300.00
400.00
500.00
600.00
National forest Other public NIPF Forest industry
Growth
Removals
Ownership
Mill
ion
cu
. ft.
Down Woody MaterialDown Woody Material2001 Data2001 Data
0.0
5.0
10.0
15.0
20.0
25.0
CWD
FWD
Total by Plot
To
ns
/ a
cre
Summary*Timberland Acreage – 1% decrease
*Volume – 4% increase
*Net GrowthSoftwoods – 7% decreaseHardwoods – 17% increase
*RemovalsSoftwoods – 14% increaseHardwoods – 5% increase
*MortalitySoftwoods – 105% increaseHardwoods – 25% increase
*Down Woody Material – new information to be included