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Condition Level Variables. National Manual Version 1.56. Condition Class Number. No change Plot Center is always condition 1. Land Use. Land use codes have changed Census water is still 91 Some new land uses. Forest Land Use Codes. 01 Accessible timber land - PowerPoint PPT Presentation
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Condition Level VariablesCondition Level Variables
National Manual Version 1.56
Condition Class NumberCondition Class Number• No change
• Plot Center is always condition 1
Land Use Land Use •Land use codes have changed
•Census water is still 91
•Some new land uses
Forest Land Use CodesForest Land Use Codes01 Accessible timber land
02 Accessible other forest land
03 Inaccessible/hazardous forest land
Deleted Forest Land Use Codes:
•Reserved timberland
•Reserved other forest land
•Separate item to record if land is reserved or not
Agricultural Land UsesAgricultural Land Uses10 Other agricultural land
11 Cropland
12 Pasture (improved)
13 Idle farmland
14 Orchard
15 Christmas tree plantation
16 Maintained wildlife openings
RangelandRangelandChanged to code 20
Developed Land UsesDeveloped Land Uses30 Other developed land
31 Cultural (business, residential, etc.)
32 Right-of-way (road, railroad, utility line)
33 Recreation area
34 Mining
Other Non-Forest Land UsesOther Non-Forest Land Uses40 Other non-forest (barren land, rock)
41 Non-census water
42 Marsh
43 Beach
Non-Sampled Land UsesNon-Sampled Land Uses90 Other not sampled
91 Census water (not calculated into land base)
92 Denied access – land use not classfied
93 Hazardous – land use not classified
94 Area not in sample (Mexico)
Condition StatusCondition StatusFirst step in delineating conditions on the plot
1 Accessible forest land2 Nonforest land3 Noncensus water4 Census water5 Denied access area6 Area too hazardous to visit7 Area that is not in the sample9 Lost subplot/past condition data
NEW Past CodesNEW Past Codes• Land Use, Condition Status, Forest Type,
Regeneration Status
• Use current procedures to determine the past data as if you were applying the new rules at the time of the last survey (5 years ago for SK1)
• Previous crew notes, diagrams, and photos
• Best judgement: Only differ with old data if it is OBVIOUS that it would have been different if current procedures had been applied
OLD Land UseOLD Land Use• Record the current code that best matches the
land use that the previous cruiser recorded
• Record the most detailed code available
• Example: Previously most developed land uses were one code – 67 Urban and other. Best match for a road under current system is 32, NOT Other developed – code 30
• Only change the code if it is OBVIOUS that the previous cruiser incorrectly applied past rules
Nonforest YearNonforest Year• Only record on a landcleared forest condition• Record the year that the forest land was
converted to a non-forest condition
Similar Identified Condition ClassSimilar Identified Condition ClassLong name, but it’s actually a shortcut….
• Some conditions delineated only because they are landcleared, reverted, or procedural change
• Some may be too small to otherwise qualify as a “regular” condition
• Record the Condition Class Number of the condition that these small, broken out conditions would otherwise be “lumped” into
• Don’t need to record most of the condition level variables if there is a link to a similar condition
Similar Identified Condition ClassSimilar Identified Condition Class
• Some are large enough to stand on their own
• But are identical to another condition in every aspect except the Past Land Use
• Record the Condition Class Number of the identical condition
• Don’t need to record most of the condition level variables if there is a link to a similar condition
Long name, but it’s actually a shortcut….
• Some conditions delineated only because they are landcleared, reverted, or procedural change
Reserved StatusReserved Status0 Not reserved
1 Reserved
• Forest condition defining attribute• No change in reserved land definition• Coded separately from land use
Owner GroupOwner Group10 US Forest Service
20 Other Federal
30 State and Local Government
40 Private
• Forest condition defining attribute• Previously termed “Broad ownership category”• Forest Industry is no longer an owner group
Owner ClassOwner Class• Specific divisions within the Owner Group• Owner Class is NOT a condition defining
attribute
Owner Class CodesOwner Class CodesUS Forest Service Group
11 National Forest
12 National Grassland
13 Other Forest Service
Private Group
41 Corporate
42 Non-Gov’t Conservation/ Natural Resource Org
43 Unincorporated Partners/ Associations/ Clubs
44 Native American Reserve
45 Individual
Other Federal Land Group
21 National Park Service
22 Bureau of Land Mngmt
23 Fish and Wildlife Service
24 Dept of Defense/Energy
25 Other Federal
State and Local Gov’t Group
31 State
32 Local (County, City)
33 Other Non-Federal Public
Private Owner Industrial StatusPrivate Owner Industrial Status• Separated from the old private owner class code:• Not a condition defining attribute
0 Land is NOT owned by industrial owner with wood processing mill
1 Land IS owned by industrial owner with wood processing mill
Total Acres and Percent ForestTotal Acres and Percent ForestNo change: Still only record on NIPF land owners
Stand SizeStand Size• Condition defining attribute• One major departure from previous manual:
• Conditions that are delineated based solely on Stand Size must be at least two size classes apart
• Two exceptions to this new rule:• If another condition defining attribute (forest type,
regeneration status, etc.) is used to delineate a separate condition, then consider Stand Size as an “ancillary” attribute: Record the specific size class of each condition, even if only one class apart
• Nonstocked forest (code 0) vs. stocked forest (codes 1-4) are always delineated
Stand Size CodesStand Size Codes• Codes are now ordered from the small to large size
classes, and sawlog sizes are broken up:
0 Nonstocked
1 Up to 4.9 inches (seedlings/saplings)
2 5.0-8.9 softwoods/ 5.0-10.9 hardwoods (poles)
3 9.0-19.9 softwoods/ 11.0-19.9 hardwoods
4 20.0-39.9 inches
5 40.0+ inches
6 Cover trees (western TX/OK, ignore in AR, GA)
Regeneration StatusRegeneration Status• Formerly called “Stand Origin”• Condition defining attribute
• Codes are simplified:
0 Natural
1 Artificial
Artificial Regeneration SpeciesArtificial Regeneration SpeciesRecord species code of artificially planted stands
Tree DensityTree Density• Last condition defining attribute• Still only record change in density if it’s the only reason to
delineate a condition• Code changes:
1 Initial density class
2 Density class 2 – density different than 1
3 Density class 3 – density different than 1 and 2
Stand AgeStand Age• Stand Age is linked to Stand Size Class instead of Stand
Structure, but procedures are basically same
• Average age of trees in predominant Stand Size Class that are not overtopped
• When no single Stand Size Class is predominant, assign weights to the age of each size class
• If all of the trees in a condition class are not suitable to be bored for age, record 998
Stand StructureStand StructureNo change
DisturbanceDisturbance• Code up to three
• Most important to least important (use best judgement)
• Threshold: 25% of individual trees in condition
• Positive or negative effect
• Since last survey or within last 5 years on SK 1 plots
• Codes changed: 2 digits instead of 1 digit
Disturbance CodesDisturbance Codes00 None
10 Insects
20 Disease
30 Crown and ground fire (either prescribed or natural)31 Ground fire32 Crown fire
40 Animal other than the following:41 Beaver42 Porcupine43 Deer/ungulate45 Domestic animal/livestock (includes grazing)
Disturbance CodesDisturbance Codes50 Weather other than the following:51 Ice52 Wind (includes hurricane, tornado53 Flooding (weather induced)54 Drought
60 Vegetation (suppression, competition, vines)
70 Unknown/ not sure/ other (include a note)
80 Human – Any significant threshold human-caused damage not described by other Disturbance or Treatment codes
Disturbance YearDisturbance Year• Record the continuously over time, record 9999
• Since last year each disturbance occurred
• If occurs survey or within last 5 years on SK 1 plots
TreatmentTreatment• Code up to three
• Most important to least important (use best judgement)
• Since last survey or within last 5 years on SK 1 plots
• Codes changed
Treatment CodesTreatment Codes00 None
10 Other cutting11 Clearcut12 Partial harvest13 Seed-tree/shelterwood harvest (include final harvest of
the seed trees; don’t record as clearcut)14 Commercial thinning15 TSI
20 Site preparation
30 Artificial regeneration (no distinction between afforestation and reforestation)
40 Natural regeneration
50 Other silvicultural treatment (fertilizers, herbicides, etc.)
Treatment YearTreatment Year• Record the year each treatment occurred
• Since last survey or within last 5 years on SK 1 plots
Physiographic ClassPhysiographic Class• New codes:
• Xeric codes are grouped in the 10s• Mesic codes are grouped in the 20s• Hydric codes are grouped in the 30s
• Definitions are the same except the following four new classes have been broken out:
• Dry mountain tops and slopes category is split into:11 Dry Tops12 Dry Slopes
• Beaver and cypress ponds are broken out from the other hydric category:
34 Beaver ponds35 Cypress ponds
OperabilityOperability• No definitional change
• Codes changed:
0 No problems1 Seasonal access 2 Mixed wet and dry3 Broken terrain4 Year-round water problems5 Slopes of 20% or more
Water SourceWater Source• Not just permanent water– new intermittent code added• Added swamps, bogs and marsh
0 None1 Intermittent2 Permanent stream/canal less than 30 feet wide3 Permanent stream/canal 30-199 feet wide4 Permanent stream/canal 200 feet wide or greater5 Permanent swamp, bog, marsh less than 4.5 acres6 Permanent swamp, bog, marsh 4.5 acres or more7 Permanent lake/pond less than 4.5 acres8 Permanent lake/pond 4.5 acres or more9 Other permanent water (includes ocean)
• Record the water source that has greatest impact
Distance to Water SourceDistance to Water Source• Still water within 1000 feet
• No coding changes
Site ClassSite Class• Subtle changes
• Still estimate Site Class of condition if no site trees are collected
• No required list of site tree species, only a “preferred” list
• Can record any tree species as a site tree if no preferred species are present
• Estimate Site Class if there is not a site class curve in Appendix 4 for the site tree species recorded on plot
Fire and GrazingFire and Grazing• No changes
• Simple presence or absence on the condition
Condition Level NotesCondition Level Notes
Record any pertinent notes for each condition
Old Condition Level ItemsOld Condition Level ItemsTwo groups of items are no longer recorded at the condition
level:• Individual site tree information is recorded at the
Site Tree Level (Section 7.0)• Slope and Aspect are now recorded at the Subplot
Level (Section 4.0)
Dot count is gone:• No more subplot and microplot dots• No more 5 dot minimum on the subplot• All conditions on the plot are delineated,
regardless of area the condition occupies on the subplot
The End!The End!