tree data national manual version 1.61 section 5.0
TRANSCRIPT
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Tree DataTree Data
National Manual Version 1.61
Section 5.0
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Subplot NumberSubplot Number
1 Center subplot2 North subplot3 Southeast subplot4 Southwest subplot
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Tree Record NumberTree Record Number
• Three digit code unique on each subplot
• SK 1, 3 & 9: Start at 001
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Condition Class NumberCondition Class NumberRecord the Condition Class Number where the tree is located
Condition # 2
Pine Plantation
Condition # 1
Clearcut stand
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AzimuthAzimuth• Record the azimuth from subplot or
microplot center to the center of the base of each tally tree
• Reference all trees > 5.0 inches to the subplot
• Reference all trees > 1.0 and < 5.0 inches to the microplot
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Horizontal DistanceHorizontal Distance• Record the HORIZONTAL distance
from subplot or microplot center to the center of the base of each tally tree
• Reference all trees > 5.0 inches to the subplot
• Reference all trees > 1.0 and < 5.0 inches to the microplot
• Use slope correction table on coding summary sheets
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Present Tree StatusPresent Tree Status(formerly Tree History)(formerly Tree History)
Record the appropriate code that identifies the status of each tree on the plot:
1 Live Tree
2 Dead
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Lean AngleLean AngleNew ItemNew Item
• Record the code that describes the angle of lean from vertical of the tree from the base to top of actual length.
• Trees supported by other trees or by their own branches are considered standing.
0 Standing (less than 45 degrees of lean)
1 Down (more than 45 degrees of lean)
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SpeciesSpecies• Record the appropriate tree species code
• Use code 299 for unknown dead conifers and 999 for unknown dead hardwoods when the generic or species codes cannot be used.
• The generic codes (e.g. 400, 540) should only be used when you are sure the species is on the species list, but you cannot differentiate among acceptable species.
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Current Diameter at Current Diameter at Breast Height (DBH)Breast Height (DBH)
Measure diameter at 4.5 feet above the ground with the following exceptions:
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Current Diameter at Current Diameter at Breast Height (DBH)Breast Height (DBH)
Measure diameter at 4.5 feet above the ground with the following exceptions:
4.5’
3.5’
Diameter point
Pith intersection
Figure 11. Forked between 1.0-4.5 ft.
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Length To Diameter Length To Diameter Measurement PointMeasurement Point
• For those trees measured directly at 4.5 ft above the ground, leave this item blank
• If the diameter is measured above 4.5 ft, record the actual length from the ground, to the nearest 0.1 in
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Tree ClassTree Class Crown Class Crown Class
No changes
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Crown RatioCrown Ratio
Recorded to the nearest 1 percent
Compacted Ratio
Vs.
Uncompacted Ratio
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Tree GradeTree Grade Percent Board Foot Cull Percent Board Foot Cull
No changes
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Percent Rotten/Missing CullPercent Rotten/Missing Cull(formerly Cubic Foot Cull)(formerly Cubic Foot Cull)
• Record the percentage of rotten and missing cubic-foot volume from a 1-foot stump to the 4-inch top to the nearest 1 percent
• Do not include volume that is missing due to a broken top
• Only include volume to the top of Actual Length
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Total &Total &Actual LengthActual Length
• TOTAL LENGTH is to the nearest 1 foot from ground level to the tip of the apical meristem. If the tree has a broken or missing top, estimate what the total length would be if there were no missing or broken top.
• ACTUAL LENGTH – for trees with broken or missing tops, record the length of the remaining portion of the tree.
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Length MethodLength MethodNew ItemNew Item
Record the code that indicates the method
used to determine tree lengths:
2 Total length is visually estimated, actual length is measured with an instrument.
3 Total and actual lengths are visually estimated.
1 Total and actual lengths are field measured with a measurement instrument
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Fusiform/Comandra Fusiform/Comandra Rust/Hardwood DiebackRust/Hardwood Dieback
New ItemNew Item
Record the incidence of fusiform, comandra rust or dieback.
0 None
1 Fusiform, Comandra Rust: Only on slash and loblolly
2 Dieback: HARDWOODS ONLY
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Dieback SeverityDieback Severity
Record the severity of hardwood dieback
1 = 10 to 19%
2 = 20 to 29%
Etc….
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DamageDamage
Covered later today
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Decay Decay ClassClassNew New ItemItem
Recorded on standing dead trees only
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Tree NotesTree NotesNew ItemNew Item
Record notes to explain or describe another variable
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Remeasurement of Remeasurement of Prism PlotsPrism Plots
National Manual Version 1.61
SUPPLEMENT B
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Data Collected on Prism TreesData Collected on Prism Trees
PRISM POINT#/TREE#
PRISM TREE STATUS
PAST TREE STATUS
NEW TREE RECONCILE
LEAN ANGLE
SPECIES
CURRENT DBH
PREVIOUS DBH
DIAMETER CHECK
LENGTH TO DBH POINT
TREE CLASS
PERCENT ROTTEN/MISSING CULL
TOTAL LENGTH
ACTUAL LENGTH
LENGTH METHOD
CAUSE OF DEATH
MORTALITY YEAR
UTILIZATION CLASS
TREE NOTES
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Prism Point #/Tree#Prism Point #/Tree#
• No change
• Record the 1-digit point number and 2-digit tree number for each tree on the prism plot
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Prism Tree StatusPrism Tree Status(Formerly Prism Tree History)(Formerly Prism Tree History)
0 No status – Tree was incorrectly tallied at the previous survey or currently is not tallied due to definition or procedural change.
1 Live tree
2 Dead tree
3 Removal – tree that has been cut or killed by direct human activity relating to harvesting, silviculture or land clearing.
4 Missing – A tree was tallied in previous inventory but now is missing due to natural causes such as landslide, fire, etc.
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Past Tree StatusPast Tree Status
1 Live tree
2 Dead tree
SK = 2 Plots only: Record the past tree status of remeasured trees:
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New Tree ReconcileNew Tree Reconcile
• For remeasured locations only
• Record a NEW TREE RECONCILE for any new tally tree that was not tallied in the previous inventory
• This code is used to identify the reason a new tree appeared in the inventory.
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New Tree Reconcile CodesNew Tree Reconcile Codes1 Ingrowth – New tally tree that has grown into
the plot, and does not qualify as through growth
2 Through Growth – New tally tree 5.0 inches DBH or larger within the old co-located microplot that was a seedling at the last inventory
3 Missed Live Tree – A live tree missed at previous inventory and that is live, dead or removed now
4 Missed Dead – A dead tree missed at previous inventory and that is dead or removed now.
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DBH for Remeasured TreesDBH for Remeasured Trees• Take DBH at the same location as the previous
crew unless it is not physically possible
• Exception 1: Take diameter at the new location if the old Length to DBH is more than 12 inches from where the new rules dictate
• Exception 2: If previous DBH was estimated, take DBH at the new location even if it is within 12 inches of old diameter
• Assign a DIAMETER CHECK code of 2 whenever the point of remeasurement is moved.
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Cause of DeathCause of Death
• Record the cause of death for all trees that have died, been cut since the previous survey.
• If cause of death cannot be reliably estimated, record unknown/not sure.
10 Insect
20 Disease
30 Fire
40 Animal
50 Weather
60 Vegetation (suppression, competition, vines/kudzu)
70 Unknown/not sure/other
80 Human
90 Physical (hit by falling tree)
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Mortality YearMortality Year
• Record the estimated year that remeasured trees died or were cut
• Examples: 1998, 1999, 2000, etc.
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Utilization ClassUtilization ClassRecord the code to identify cut trees that have
been removed from the site:
00 Not utilized
11 Commercial utilization – some portion of the tree removed for commercial purposes
12 Non-commercial utilization – some portion of the tree removed for non-commercial purposes