North Carolina FIA Data Update Barry New Technical Development & Planning Branch, NCDFR Retired...
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Transcript of North Carolina FIA Data Update Barry New Technical Development & Planning Branch, NCDFR Retired...
North Carolina FIA Data Update
Barry NewTechnical Development & Planning
Branch, NCDFR
Retired foresters meeting May 25, 2011
7 Periodic Surveys (Cycles)
1st 1938 2nd 1956 3rd 1964 4th 1974 5th 1984 6th 1990 7th 2002R*
8th 2003-20079th 2003-2010 rolling
average
2 of 5 panels complete as of 2010. 40% re-measured plots, averaged with complete 8th cycle previous plots
Annual Survey
Forest Inventory & Analysis – the Nation’s Forest Census
National forest7%
Other federal3%
State and local government
5%
Forest industry8%
Individual62%
Other cor-porate
15%
NC 2007 Ownership of 18 million acres of timberland
NC Trends by survey cycle
1938 1956 1964 1974 1984 1990 2002 2007 201016,500.0
17,000.0
17,500.0
18,000.0
18,500.0
19,000.0
19,500.0
20,000.0
20,500.0
21,000.0
Forestland Timberland
mill
ion
ac.
0–25
26–50
51–75
76–100
Water
Percent forest land by county
Percentage of land in forest by county, North Carolina, 2007
White-red-jack pine1%
Loblolly-short-leaf pine*
29%
Spruce-fir<1%
Longleaf-slash pine2%
Nonstocked1%
Oak-pine13%
Other hardwoods**<1%
Oak-hickory40%
Maple-beech-birch<1%
Elm-ash-cot-tonwood
3%
Oak-gum-cypress10%
Area of timberland by forest-type group, NC 2007
Sawtimber Poletimber Seedling-sapling Nonstocked0
2
4
6
8
10
12
1974 1984 1990 2002 2007
mill
ion
acre
s
Area of timberland by stand-size class and year, North Carolina
Natural Planted Natural Planted Natural Planted Natural Planted1984 1990 2002 2007
0
2
4
6
8
10
12
14
16
18Softwood Hardwood
Year and stand origin
Area
(mill
ion
acre
s)Timberland area by forest-type group and
stand origin, North Carolina, 2007
6 8 10 12 14 16 18 20+0
0.5
1
1.5
2
2.5
3
199020022007
Diameter Class
Volu
me
(bill
ion
cubi
c fe
et)
Softwood all-live volume by diameter class and year, North Carolina, 2007
Hardwood all-live volume by diameter class and year, North Carolina, 2007
6 8 10 12 14 16 18 20+0
1
2
3
4
5
6
7
199020022007
Diameter Class
Volu
me
(bill
ion
cubi
c fe
et)
Gross gro
wth
Mortality
Removals
Net chan
ge
Gross gro
wth
Mortality
Removals
Net chan
ge-200
0
200
400
600
800
1,000
1,2001990 2002 2007
Softwood Hardwood
Volu
me
(mill
ion
cubi
c fe
et p
er y
ear)
Growth, Removals, Mortality & Net Change by Species Group & Year, North Carolina
Forestland Timberland16,500.0
17,000.0
17,500.0
18,000.0
18,500.0
19,000.0
19,500.0 19,277.5
18,710.4
18,268.7
17,684.4
18,822.4
18,368.6
Published 1990 Published 2002 NIMS 4.0 2002
What about the 1+ million acres of forestland lost 1990 – 2002?
Net change 1990-2002 NIMS Reprocessed
-455,000 ac. Forestland -342,000 ac. Timberland
(150)
(100)
(50)
-
50
100
150
200
250
300
350
1964 -1974
1975 -1984
1985 -1990
1991 -2002
2003 -2007
Th
ou
sa
nd
Ac
res
Average Annual Landuse Change of Timberland in North Carolina by Survey Period
Total Timberland GainTotal Timberland LossNet Change
R. HarperSRS, FIA
(150)
(100)
(50)
-
50
100
150
200
250
300
350
1964 -1974
1975 -1984
1985 -1990
1991 -2002
2003 -2007
Th
ou
san
d A
cres
Average Annual Landuse Change of Timberland in North Carolina by Survey Period
Total Timberland GainTotal Timberland LossNet ChangeLoss to Urban/OtherLoss to Ag
R. HarperSRS, FIA
While NC timberland has experienced pressure from conversions to development and agricultural land-use, the forestry community has been able to maintain a sustainable wood volume over time. Timber inventory volume is at an all time high and has doubled over the last 50 years.
0.05.010.015.020.025.030.035.040.0
0.0
5.0
10.0
15.0
20.0
25.0
1956 1964 1974 1984 1990 2002 2007
Billi
on C
ubic
Fee
t
Mill
ion
Acr
esTimberland Area and Live Tree1 Volume
by FIA survey, North CarolinaTimberland AcresVolume
1/ 1956 and 1964 are growing stock volume.R. HarperSRS, FIA
North Carolina Survey Units
Piedmont
Mountains
Northern Coastal Plain
Southern Coastal
Plain
1938 1956 1964 1974 1984 1990 2002 20070.0
1,000.0
2,000.0
3,000.0
4,000.0
5,000.0
6,000.0
7,000.0
MountainsPiedmontN. Coastal PlainS. Coastal Plain
Survey Year
thou
sand
acr
esTimberland area trends by survey unit, North Carolina
Highlights• Forest & timberland
area continues to moderately decline.
• 85% of NC’s forests are privately held. 62% by individuals & families.
• Hardwoods dominate timberland area (68%) and all live volume (66%).
• GS volume 63% hdwd vs. 37% sftwd. 32.7 billion cu ft tot.
• GS total volume: – 25% loblolly– 14% yellow poplar– 6% sweetgum– 6% soft maple
• Positive annual net change in G/R/M 2002-2007 for both sftwd & hdwd.
• Reprocessed 2002 data shows net loss of 455,000 ac forestland & 342,000 ac timberland 1990-2002, not 1+ million acres.
Acknowledgements
USFS SRS FIAMark Brown, Forester/AnalystRichard Harper, Forester/AnalystJeff Turner, Forester/AnalystJason Meade, Forester/Analyst
DFRDon Roach, FIA CoordinatorMichael Mann, former Utilization Forester
http://www.fia.fs.fed.us/tools-data/default.asp
Data available for survey cycles 1974, 1984, 1990, 2002R, 2003-2007, 2003-2010
http://treesearch.fs.fed.us/
Barry D. New, RF, CFBranch Head, Technical Development & [email protected]