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FVS
Forest Vegetation Simulator
The Forest Vegetation Simulator (FVS)
A review of the Pacific Northwest Variants
Chad Keyser
FVS
Forest Vegetation Simulator
Presentation Roadmap
1. FVS Overview
2. FVS Demonstration
3. Questions
FVS
Forest Vegetation Simulator
Forest G & Y Modeling System
• USDA Forest Service supported
• Maintained by the FMSC in Fort Collins, CO
• Maintenance, Development, and User Support
FVS
Forest Vegetation Simulator
History
• Prognosis Model for the
Inland Empire Region
• Expanded to other
Geographic Regions
• Renamed FVS
FVS
Forest Vegetation Simulator
FVS System
Components
• Pre Processors
• G & Y Model
• Post Processors
• SUPPOSE Interface
FVS
Forest Vegetation Simulator
Pre Processors
SUPPOSE
USDA FS NRIS FSVeg
FIA Mapmaker
FVS
Forest Vegetation Simulator
G & Y Model
FVS is a distance-independent individual tree
model comprised of empirical equations that
predict diameter and height growth, crown change
and mortality over time.
FVS
Forest Vegetation Simulator
Geographic Variants
• Base Model
• FVS Extensions
• Red Alder: PN WC
FVS
Forest Vegetation Simulator
Stand Information
Stand ID
Location code
Stand origin year
Slope
Aspect
Elevation
Plant Assoc. / EcoClass
Site species
Site index
Inventory year
Inventory/Cruise Design
Grouping codes
Tree Information
Plot Number
Tree Number
Tree Count
Tree History
SPECIES
DBH
Height
Crown Ratio
Damage/Severity Codes
Tree Value Class
Cut/Leave Status
Growth Increment
FVS
Stand
Data
Forest Vegetation Simulator
Perform Mgmt
Activities
Growth
(DBH & HT)
Mortality
FVS Processing
Sequence
FFE / I&D
Regeneration
Update Stand
Statistics
Crown Change
FVS
Forest Vegetation Simulator
Red Alder Diameter Growth (PN)
1,369 Growth Sample Trees
•
•
•
•
34 from the Siuslaw ’73
610 from the Olympic ’74
534 from BLM lands in Oregon
191 from BIA Quinalt
Ln(dds) = f(stand, tree, competition
measures)
FVS
Forest Vegetation Simulator
Red Alder Diameter Growth (WC)
125 Growth Sample Trees
• 14 from the Gifford Pinchot NF
• 29 from the Mt. Baker – Snoqualmie NF
• 65 from the Mt. Hood NF
• 8 from the Umpqua NF
• 9 from the Willamette NF
DG = f(BA and DBH)
FVS
Forest Vegetation Simulator
Red Alder Height Growth
1. Potential HG based on Site Index
•
•
PN (Harrington and Curtis 1986), 20 yr
BA
WC (Worthington et al 1960), 50 yr BA
2. Modified by RH and CR
HTG = POTHTG * Modifier
FVS
Forest Vegetation Simulator
Post Processors
•
stand and stock tables
• structure and habitat statistics
• fire, insect and disease hazard
ratings
• computer visualizations (SVS)
FOREST VEGETATION SIMULATOR
VERSION 6.2
-- SOUTHEAST TWIGS
**TEST**
RV:02.26.98
05-23-1998
12:59:34
----------------------------------------------------------------------------------------------------------------------------- ----OPTIONS SELECTED BY INPUT
----------------------------------------------------------------------------------------------------------------------------- ----KEYWORD
PARAMETERS:
---------------------------------------------------------------------------------------------------------------------------- -STDIDENT
STAND ID= C315S01
STDINFO
FOREST-LOCATION CODE=
ELEVATION(100'S FEET)=
DESIGN
BASAL AREA FACTOR= 10.0; INVERSE OF FIXED PLOT AREA=
1.0; BREAK DBH=
SEE "OPTIONS SELECTED BY DEFAULT" FOR PLOT COUNTS AND SAMPLING WEIGHT.
Stand C315S01 at Smokey District
THINBBA
DATE/CYCLE= 2007; RESIDUAL=
80.00; PROPORTION OF SELECTED TREES REMOVED= 1.000
DBH OF REMOVED TREES WILL RANGE FROM
0.0 TO 999.0 INCHES, AND
HEIGHT OF REMOVED TREES WILL RANGE FROM
0.0 TO 999.0 FEET.
THINABA
DATE/CYCLE= 2027; RESIDUAL=
60.00; PROPORTION OF SELECTED TREES REMOVED= 1.000
DBH OF REMOVED TREES WILL RANGE FROM
0.0 TO 999.0 INCHES, AND
HEIGHT OF REMOVED TREES WILL RANGE FROM
0.0 TO 999.0 FEET.
OPEN
DATA SET REFERENCE NUMBER =
2; BLANK=ZERO; STATUS=UNKNOWN
MAXIMUM RECORD LENGTH (IGNORED ON SOME MACHINES) = 150; FILE FORM= 1 (1=FORMATTED, 2=UNFORMATTED)
DATA SET NAME = C315S01.tre
TREEDATA
DATA SET REFERENCE NUMBER=
CLOSE
DATA SET REFERENCE NUMBER =
SPLABEL
STAND POLICY LABEL SET:
All, C315
PROCESS
PROCESS THE STAND.
80308; HABITAT TYPE= 0; AGE=
0.0; LATITUDE IN DEGREES=
0.
77; ASPECT AZIMUTH IN DEGREES=
0.; SLOPE=
0.%
0.0
2
2
----------------------------------------------------------------------------------------------------------------------------- ----OPTIONS SELECTED BY DEFAULT
----------------------------------------------------------------------------------------------------------------------------- ----TREEFMT
(I4,T1,I7,F6.0,I1,A3,F4.1,F3.1,2F3.0,F4.1,I1,3(I2,I2),2I1,I2,
DESIGN
BASAL AREA FACTOR= 10.0; INVERSE OF FIXED PLOT AREA=
1.0; BREAK DBH=
0.0
NUMBER OF PLOTS=
10; NON-STOCKABLE PLOTS=
0; STAND SAMPLING WEIGHT= 10.00000
SITE SPECIES=RO CODE=
2I3,2I1)
100
----------------------------------------------------------------------------------------------------------------------------- -----
ACTIVITY SCHEDULE
----------------------------------------------------------------------------------------------------------------------------- ----CYCLE DATE EXTENSION KEYWORD
DATE PARAMETERS:
----- ---- --------- -------- ---- -----------------------------------------------------------------------------------------1
1997
2
2007
BASE
THINBBA
2007
80.00
1.00
0.00
999.00
0.00
999.00
3
2017
4
2027
BASE
THINABA
2027
60.00
1.00
0.00
999.00
0.00
999.00
----------------------------------------------------------------------------------------------------------------------------- -----
CALIBRATION STATISTICS:
SH
----
WP
----
RO
----
NUMBER OF RECORDS PER SPECIES
6
18
77
NUMBER OF RECORDS WITH MISSING HEIGHTS
6
18
77
NUMBER OF RECORDS WITH BROKEN OR DEAD TOPS
0
0
0
NUMBER OF RECORDS WITH MISSING CROWN RATIOS
6
18
77
NUMBER OF RECORDS AVAILABLE FOR SCALING
THE DIAMETER INCREMENT MODEL
0
0
0
RATIO OF STANDARD ERRORS
(INPUT DBH GROWTH DATA : MODEL)
1.00
1.00
1.00
WEIGHT GIVEN TO THE INPUT GROWTH DATA WHEN
DBH GROWTH MODEL SCALE FACTORS WERE COMPUTED
0.00
0.00
0.00
INITIAL SCALE FACTORS FOR THE
DBH INCREMENT MODEL
1.00
1.00
1.00
NUMBER OF RECORDS AVAILABLE FOR SCALING
FVS
Forest Vegetation Simulator
SUPPOSE Interface
• Menus
• List boxes
• Radio buttons
• Scroll bars
• Text boxes
• Pop-up lists
FVS
1.
2.
Pick stands for simulation
Set the time scale
a.
3.
number of cycles (5 or 10 year)
Assign Management Actions
a.
b.
4.
5.
6.
Forest Vegetation Simulator
harvest
regeneration
Select post processors
Run the simulation
View outputs
a.
b.
c.
text files
spreadsheets
graphs
FVS
Forest Vegetation Simulator
Forest Management Service Center
2150 Centre Ave, Bldg. A, Suite 341a
Fort Collins, CO 80526
www.fs.fed.us/fmsc/fvs
FVS Hotline
970-295-5770
8:00 AM to 4:00 PM (Mountain time), M-F
Gary Dixon
Chad Keyser (295-5771)
Erin Smith-Mateja
Bob Havis
Stephanie Rebain
Don Vandendriesche
FVS
Forest Vegetation Simulator
Demonstration
• FIA Dataset
• Suppose
• PN Variant
• Post Processors