Attachment 2.pdf

Monongahela National Forest

Common Stand Exam Field Guide Procedures

Field Data Collection Procedures Field data collection procedures are based upon Region 9 Common Stand Exam (CSE) protocols that have been modified for the Monongahela National Forest. This handbook addresses only those data elements that are included in the MNF inventory. A complete listing of CSE data fields are available from the FS VEG web page http://fsweb.nrm.fs.fed.us/applications/fsveg/fieldguides.shtml. Data collection should be done electronically using a device that has a Windows Mobile platform. This handbook is divided into the following sections:

Section Description 1 General Information 2 Setting 3 Sample Design 4 Plot Data 5 Tree Data

Inspections Appendices

Section 1: General Information

Stand Examination

Quick Plot – A quick plot exam may group trees by species, diameter, heights and/or damage classes on both large and small plots. These exams collect stand structual data in an efficient manner. Measurement tolerances are relaxed to allow for occular estimation of many parameters. Diameters of live trees are estimated by 2 inch DBH class and standing dead tree heights are recorded in 10 foot classes when collected. Limited tree defect information (tree quality) is collected, growth data is not collected. By limiting the information gathered and reducing measurement accuracy standards, significant cost savings are realized. The main uses of a quick plot are:

- cover and stand structure estimates by vegetative layer,

- exams in single species or single storied stands,

- timber stand improvement inspections,

- post treatment examinations,

- general surveys

Required Fields The following fields are required. Some items are automatically populated.

Setting: Proclaimed Region

Proclaimed Forest Number Ranger District Location (compartment) Stand ID Number Administrative Region Administrative Forest Number Project Name Owner (USFS) State

Date Exam Level Exam Purpose Examiner Prec. Protocol Lat-Long Datum http://fsweb.nrm.fs.fed.us/applications/fsveg/fieldguides.shtml

Stand Remarks Damage Species of Management Interest

Design: Selection Method Expansion Factor

Sub Filter Variable Minimum Variable Maximum Variable

Plot Data: Latitude Longitude Aspect Slope %

Tree Data:

The following fields are required.

Field Quick Plot Plot Number X Tag Number X Tree Status X Site/GST Tree Site index tree only Tree Species X Tree Count X

DBH/DRC X

Height Site index and fixed radius plot trees

Age Site index only Damage Category not required Damage Agent not required Damage Severity not required Remarks not required

Section 2: Setting

A setting is usually a stand, site, or vegetation polygon in which the stand examination is being collected. The combination of fields 1-5 and the date field are used to uniquely identify each setting. The date field is used to identify surveys in the same location over time. Multiple stand surveys, from the same location, are stored in the database. For each setting complete one Setting Form.

The accuracy standard is listed with the inspection forms.

Proclaimed/Administrative Region (2-digit) Required Record the proclaimed Region where the stand is located.

Code

Description

Region Nine - Eastern Region

Proclaimed/Administrative National Forest (2-digit) Required Record the proclaimed National Forest where the setting is located.

Code Description 21 Monongahela

District (2-digit) Required Record the Ranger District number where the setting is located.

01 Cheat RD 02 Gauley RD 03 Greenbrier RD 04 Marlinton –White Sulphur RD 05 Potomac RD

Location (5-digit) Required Use the 3-digit compartment code. Leading zeros are required. Example: 00999

Stand Number (4-digit) Required Record the stand number consistent with the current vegetative polygon map layer. Leading zeros are required. Example: 0098, 0008, 0023

Project Name (25-character) Record the provided project name. Multiple settings may use the same project name. The project name will be provided and will be a default.

Ownership (4-character) Record the following ownership code:

USFS US Forest Service (default)

State (2-character) Record the State in which the setting is located. A setting cannot cross state boundaries.

WV West Virginia (default)

County (3-digit) Record the County in which the majority of the setting is located. A setting can cross county lines.

001 Barbour County 023 Grant County 025 Greenbrier County 027 Hampshire County 031 Hardy County 063 Monroe County 067 Nicholas County 071 Pendleton County 075 Pocahontas County 077 Preston County 083 Randolph County 093 Tucker County 101 Webster County

Date (8-digit) Required Record the calendar month, day, and year the stand examination was completed. The format is MMDDYYYY.

07071977 July 7, 1977 12272004 December 27, 2004

Exam Purpose (2-character) Record the purpose of the exam.

SE Stand Exam - determine stand composition. (default)

Examiner (12-character) Record the individual(s) responsible for data collection. If the full name is longer than 12 characters, use only the last name. When using a Portable Data recorder, do not use reserved characters such as +, /, -, or * in this field.

The following fields can be accessed from the “Setting Data” drop down menu

Setting Damage Category (2-digit) Record damage seen within the setting. Use the following damage categories Damage Category 10-general insects 12-defoliators 19-general diseases 30-fire 40-animal 50-abiotic damage 60-competition 70-human activity 80-mulit-damage (insect/disease) 90-unknown 99-physical effects

Example of codes and descriptions.

Code Category Description

10 general insects 30 Fire

Accuracy Standard: No Errors if found in setting/stand.

Setting Damage Agent (3-digit) Record the damage agent. Damage agents will vary with damage category. Use 000 if unknown.

Example of codes and descriptions.

Category Agent Code Agent Description 30 032 human caused fire 10 008 weevil

Accuracy Standard: Locally specified if found in setting.

Setting Damage Severity (5-digit) Record the damage severity. Damage agents will vary with damage category.

Example of codes and descriptions.

Category Agent Code Severity Severity Description 30 032 2 Severe 10 008 1 Minor

Accuracy Standard: Locally specified if found in setting.

Settings - Species of Management Interest (8-character) Record plant species of management interest which occurs in the setting, but does not occur on any of the plots. Species of management interest may include noxious weeds, threatened, endangered, or sensitive plants, or management indicator species. Multiple species codes may be entered, the PDR allows 10 species per setting

The following are species that are of particular interest on the Monongahela.

JUCI Juglans cinerea – Butternut – Sensitive

PIRU Picea rubens- red spruce

The presence of Non-native invasive species (plants, insects and pathogens), Threatened and Endangered Species (TES), etc. will be indicated by simply stating the name of the species seen in a setting along with GPS coordinates, in the species of interest Record name of plant along with a GPS coordinate, where either of these species are seen growing in a setting in any abundance.

The table below shows species of interest on the Forest. If any of the life form identified below are in the stand, record in the setting remarks.

Life form Description (Code)

Scientific Name Common Name Species Code

Woody Tree (TR) Acer pensylvanicum striped maple ACPE Woody Tree (TR) Ailanthus altissima tree of heaven AIAL Woody Tree (TR) Fagus grandifolia American beech FAGR Woody Tree (TR) Prunus pensylvanica fire (pin) cherry PRPE2 Woody Tree (TR) Tsuga canadensis eastern hemlock TSCA Woody Shrub (SH) Rhododendron L. rhododendron RHODO Woody Shrub (SH) Berberis thunbergii Japanese barberry BETH Woody Shrub (SH) Kalmia latifolia mountain laurel KALA Woody Shrub (SH) Lonicera L. honeysuckle LONIC Herbs (HB) na fern 2FERN Herbs (HB) na grass 2GRAM Herbs (HB) Alliaria petiolata garlic mustard ALPE4 Herbaceous Vine (VI) na woody vine 2VW Herbaceous Vine (VI) na herbaceous vine 2VH Herbaceous Vine (VI) Vitis L. wild grape VITIS Herbaceous Vine (VI) Rosa multiflora multiflora rose ROMU

Setting Remarks (255 Characters maximum)

Section 3: Sample Design (preset in MNF CSE template)

The accuracy standard is listed in Section 7 within the inspection forms.

The standard sample designs for common MNF inventories are provided below.

Sample Design for Trees.

Form Type Sample Selection Method

Sample Expansion Factor

Subpop Filter

Selection Criteria Number

Subpop.

Variable

Subpop.

Minimum Value

Subpop Maximum Value

Remarks

TREE BAF 20 ALL 1 DBH 5.0 999 overstory

TREE FRQ 385 LIVE 2 DBH 0.01 4.9 understory

LIVE 3 HGT 0.5 4.49

Description of each form type:

1st) sample all (live and dead) trees 5.0” + DBH with a 20 BAF 2nd) sample all (live) seedlings 0.01”- 4.9” DBH AND 0.1’ - 4.5’ HGT on a 1/385th acre Fixed plot

Section 4: Plot Data

The Plot Data Form contains information about a sample plot or transect. There can be several plots in a Setting. This information is independent of the information collected in other sections. Record a separate set of plot data for each plot in the stand.

The accuracy standard is listed in Section 7 within the inspection forms.

Plot Number (3-digit) Required Record plot number for each sample plot within a setting. Plots do not have to be numbered consecutively. The total number of plots for each Setting will be provided, along with the GPS coordinates for each Plot location.

Plot Latitude (8-character) Required Record the plot latitude as measured by a Global Positioning System (GPS). Latitude consists of a 3-digit “degree”, a 2-digit “minute”, and a 3-digit “second” (the “second” value is in the form XX.X).

Plot Longitude (8-character) Required Record the plot longitude as measured by a Global Positioning System (GPS). Longitude consists of a 3-digit “degree”, a 2-digit “minute”, and a 3-digit “second” (the “second” value is in the form XX.X).

ASP (2-character) Required Aspect

%slope (3-character) Required slope

Note: Upon arrival at the measure plot, a GPS will be setup and GPS data shall be initiated as soon as possible at the plot center. The GPS will continue to operate while the field personnel are collecting other site data. Every effort should be made to maximize GPS data. If something obstructs GPS data collection, the GPS unit shall be moved to a place where data can be collected, within a 30 foot radius of plot center, and bearing and horizontal distance to plot center recorded. If GPS data cannot be collected due to satellite availability or other factors, the reason for the failure should be recorded along with documentation of attempts to relocate the GPS point as stated above. The exact time and date of the failure will also be recorded in the plot remarks. A distance and bearing to the last known location will be recorded. If signal failure occurs on successive plots, bearings and distances between plots must be recorded. Those GPS data files will be utilized to best approximate the location of reference points and plot centers.

GPS settings are as follows:

Coordinate System: UTM Datum: NAD 1983 Zone: 17N Distance Units: Meters Minimum Number of Satellites: 4 Correction: WAAS, Real Time or Differential Correction (if available) Accuracy Standard: Plot location + 33 feet of GPS’d Lat./Long

Plot Remarks (242-character) can be accessed from the “Plot Data” drop down menu.

Enter remarks relevant to the plot.

Section 5: Tree Data

OVERSTORY PLOT DATA - The overstory plot consists of gathering the following information; species, size, and quality information on a plot. A 20 Basal Area Factor wedge prism or Relaskop may be used to determine tally trees.

Tally trees of all species which are larger than 5-inch DBH in 2” diameter classes. Site Index trees should be recorded to the nearest tenth of an inch

UNDERSTORY DATA COLLECTION - A 6-foot radius plot will be used to tally the number of seedlings and saplings of all tree species which are less than 5.0" DBH (see the Appendix H for species codes). The actual number of stems will be recorded by species code for each species counted.

Count all live seedlings taller than 6 inches and less than 4.5’ tall. Seedlings that are less than 6 inches tall should not be counted.

Saplings > 4.5’ tall (has a minimum DBH .01”) and <5.0 inch DBH shall have diameters recorded according to the guidelines below under DBH.

Count all striped maple and beech from seedling or sucker origin, even if they are shorter than 6 inches or have fewer than two normal-sized leaves. Striped maple, beech, birch are very important to tally since they are primary species which interfere with tree seedling establishment and growth.

Count clumps of these species that originate from the same spot as one stem.

The required fields for tree data by exam type are in the following Table.

Field Quick Plot

Plot Number X Tag ID # X- automatically populates Tree Status X Site/Growth Trees X Tree Species X Tree Count X

DBH X

Height Site trees and fixed radius plot trees

Tree Age X- Site Trees Tree Damage Category X - not required Tree Damage Agent X - not required Tree Damage Part X- not required Tree Damage Severity X - not required

The accuracy standard is listed in Section 7 within the inspection forms.

Plot Number (3-digit)

Tag ID Number (4-digit) Record the tag ID number. This number, in conjunction with Plot Number, uniquely identifies every line of tree data.

Tag ID number is the consecutive numbering of the tree data lines for each plot beginning with "01" from true North. The numbering sequence is repeated on each plot. Each Tag ID is associated with a tree or a group of trees.

T- Tree Status (1-character)

L Live - includes all standing trees that have at least one green point of growth. This includes deciduous trees that have lost their foliage for the season, and trees that have recently lost their leaves to defoliators, but will reflush.

D Dead - standing trees without a green point of growth. Note: many of the tree fields are not used if the tree is a dead tree.

S - Site Trees

Site Tree Selection Criteria

Record the plot number for each line of tree data. Plot numbers shall be unique within a setting. Do not duplicate plot numbers.

A site tree is measured for diameter to the nearest 1/10 inch, age, and total height to determine site index and yield capacity for a stand. Site trees have never experienced any overstory competition or damage that would have reduced height growth during any period of their life. Freedom from height growth suppression is the single most important selection criteria for site trees. A number of descriptive guidelines may be used to indicate this condition. Site trees must be of a species for which site index relationships have been studied. Designate 1 site trees per setting/stand. Use the following as a summary of site tree selection criteria:

1. Freedom from height growth suppression

• Choose dominants or co-dominants trees.

• No evidence of top damage, past or present, which has influenced height growth.

• No pronounced period of radial growth suppression.

• No Veneer quality of any species will be bored to determine age.

2. Select trees from a locally defined species list. Species preference is based on the quality of the associated site index-yield study.

3. Similar age class, preferably middle-aged, avoiding old growth and young age classes, typically > 50 years and < 120 years.

4. Select one site tree per stand or setting.

If a sample tree does not meet site tree criteria, select the nearest suitable site tree to the sample plot. Use code “S” to designate site trees located on the plot. Use code “F” to designate off-plot site trees. For all site trees measure DBH, age, and height. If there are not any on-plot site trees that meet site tree criteria, do not select a site tree from the plots, select an off-plot site tree. For off-plot site trees, give bearing and distance to the site tree from the nearest plot.

Site/Growth Trees

S On plot site tree F Off plot site tree

Site Species - To accurately reflect present stand productivity, select a site tree species which is a major component in the stand.

Tree Species (8-character) Record the species of every sampled tree. See Appendix H for a complete listing of common tree species codes

Code Description QURU Northern red oak (Quercus rubra) TIAM American basswood (Tilia americana) MAAC Cucumber-tree (Magnolia acuminata)

TCnt - Tree Count (3-digit) Record the number of sampled trees represented by each line of tree data. Record sample trees and site trees individually. Trees with less than 1.0'' DBH, of the same tree status and species may be grouped by height classes.

Record trees ≥ 4.9'' DBH individually. (BAF 20 prism plot)

The height grouping reflects age class distribution. Distinguishing characteristics other than tree status, species, and height may warrant further grouping or individual tree recording.

There is zero tolerance for recording a tree ≥ when none are actually present. The recording of a fixed plot tree when none are present will result in a single discrepancy. The recording of a variable plot tree when none are present will result in an unacceptable error.

DBH (3,1-digit) (maximum 3 digits, decimal may be included)

6’ Radius Plot (understory) Live Saplings > 4.5’ tall and < 5.0-inch DBH shall have diameters recorded according to the table below.

Variable Plot (overstory) Measure DBH to nearest 2 inches.

Code Actual Tree DBH .5 .1 to .5 inches diameter

1.0 .6 to 1.4 inches diameter

2.0 1.5 to 2.4 inches diameter

3.0 2.5 to 3.4 inches diameter

4.0 3.5 to 4.4 inches diameter

DBH

DBH is outside bark diameter at 4.5 feet above the forest floor on the uphill side of the tree. To determine breast height, the forest floor includes the duff layer that may be present, but does not include unincorporated woody debris that may rise above the ground line. If a dead tree (snag) is missing bark, measure the DBH without the bark and record that measurement. Do not attempt to estimate the bark thickness into the DBH measurement.

Some trees have substantial bole irregularities at breast height such as branches, swellings, or depressions. In such cases, take the diameter measurement as close as possible to breast height, but above or below the deformity. If this is not possible, because of the vertical extent of the irregularity, then adjust the DBH measurement to better reflect the diameter of a regular bole. See Appendix H for examples on where to measure DBH.

Tally trees that fork below breast height will be measured as two separate trees. Record the DBH for each fork at 4.5 feet above the forest floor.

#Hgt - Height (3-digit)

6’ Radius Plot On the six foot radius fixed plot, record seedlings within one on the following height groups based on where they fall within height ranges listed in the table below:

Height Group Height Range (feet) 1 0.5’ (6”) – 1.4’ 2 1.5’ – 2.4’ 3 2.5’ – 3.4’ 4 3.5’ – 4.4’

Record height of saplings >4.5’ tall and < 5.0” DBH to nearest foot.

Trees with a DBH of > 5.0” DBH do not require heights unless it is a site tree.

Record the Diameter at Breast Height (DBH) for each tree or group of trees. When measuring individual trees, measure trees .01 inch to .5” as .5. For trees > .5 inch DBH, measure to the nearest 1 inch class and to nearest tenth of an inch for site trees. Examples of coding for the quick plot exams are listed below.

Variable Plot (overstory) Record tree height for site index trees only, in feet, from ground line on the uphill side to the uppermost tip. Select Site Index trees with intact crowns. See Appendix I for details on measuring tree heights.

#Age - Tree Age (3-digit) Age is determined from an increment boring made at DBH and is the annual ring count to the pith of the tree. See Appendix J for details on how to determine tree age from increment borings. If age cannot be determined due to extensive heartrot, select another tree. Select a desirable site index tree of the proper species for the Forest Type and is one of the dominant or codominant trees within the stand. The age shall be determined by using an increment bore. Any veneer quality tree will not be bored to determine age. If a veneer tree is the best site tree, it can be used to determine height and diameter but the age will be obtained from a neighboring non-veneer tree. Diameter of site trees shall be measured to a tenth of an inch. Age shall be the total rings from pith to bark. The increment bore should reach the pith of the tree.

Section 6: Inspection Forms

COMMON STAND EXAM INSPECTION FORM

Monongahela NF

FOREST / UNIT

Project Name

DATE INSPECTED INSPECTORS

NUMBER OF STANDS IN

INSPECTION BLOCK: NUMBER OF STANDS INSPECTED:

> 5” DBH TREE RECORDS INSPECTED :

NUMBER OF PLOTS IN

BLOCK: NUMBER OF PLOTS INSPECTED: < 5 “ DBH TREE RECORDSINSPECTED:

OFFICE INSPECTION

ACCEPTABLE UNACCEPTABLE N/A

ALL REQUIRED MATERIALS RETURNED IN GOOD CONDITION

CORRECT NUMBER OF PLOTS COMPLETED IN EACH STAND

ALL REQUIRED FORMS AND FIELDS COMPLETED AND LEGIBLE

SITE/GROWTH TREES COLLECTED FOR EACH SITE

ELECTRONIC DATA COMPLETE AND ACCEPTABLE

FIELD INSPECTION

ACCEPTABLE UNACCEPTABLE N/A

ALL REFERENCE POINTS AND PLOT CENTERS RELOCATABLE

ALL PLOT LOCATIONS CORRECT AND UNBIASED

SUFFICIENT ERRORS ACCUMULATE TO INDICATE A DISCREPANCY TREND

ALL INFORMATION ON SAMPLE DESIGN FORMS COMPLETE AND CORRECT

ALL STANDS AND PLOTS HAVE CORRECT STAND ID (LOCATION, STAND)

Setting Data Inspection Form A B C

Field Name

Accuracy Standard

Point Value # of Lines

# of Errors

Total (A x B)

Deduct (A x C)

Header Information* No Error Unacceptable

District No Error 10 1 10 County No Error 10 1 20 Location No Error 20 1

Stand No Error 20 1 10

Date No Error 10 1 10

Examiner No Error 10

1 10

Remarks1 N/A only positive points may be awarded

Damage Category (see appendix 1)

No Error 10

Damage Agent (see appendix 1)

No Error 10

Damage Severity (see appendix 1)

No Error 5

Tree Part (see appendix 1)

No Error 5

Species of Management concern1

N/A only positive points may be awarded

Subtotal for Setting Data Form

Setting Score: (Deduct Points / Total Points) X 100 = percent error

Inspectors signature:

Date:

Plot/Tree Data Inspection Form A B C

Field Name

Accuracy Standard

Point Value # of Lines

# of Errors

Total (A x B)

Deduct (A x C)*

Header Information No Error Unacceptable Plot Number No Error 10 Plot Latitude

±33 feet 10

Plot Longitude Aspect ±45o feet 5 Slope ±10% 5

Tag ID No Error 20 Tree Status (live/dead) No Error 20 Site Tree -1 per stand

No Error 20

Tree Species No Error 20 Tree count > 5” dbh No Error 50 Tree Count (only on trees <5” dbh)

± 25% on seedlings;

±1 sapling

DBH ± 10% , SI

± .2 in.

Height (site tree only) ± 10% 50 Height – fixed plot ± 1 height group

Tree Age (site tree only)

± 10% 50

Remarks No error NA Subtotal for Tree Data Sheet

Plot Score: (Deduct Points / Total Points) X 100 = percent error

Inspectors signature:

Date:

Appendices

To

Field procedures

Appendix A: Administrative and Proclaimed Forest Code

Administrative Number

Administrative Forest Name

Proclaimed Number

Proclaimed Forest Name

21 Monongahela 21 Monongahela

Appendix B: District Codes

Forest Code District Monongahela 1 Cheat 2 Gauley 3 Greenbrier 4 Marlinton-White Sulphur 5 Potomac

Appendix C: State Codes

WV – West Virginia

Appendix D: County Codes

State Code County West Virginia 001 Barbour County

023 Grant County

025 Greenbrier County

027 Hampshire County

031 Hardy County

063 Monroe County

067 Nicholas County

071 Pendleton County

075 Pocahontas County

077 Preston County

083 Randolph County

093 Tucker County

101 Webster County

Appendix E: List of Species

Species that have an “X” in one or more of the columns to the right of the table below, are “Species of Management Interest”. The abbreviated column headings are defined as follows:

Abbreviation Definition LF Life Form PETS Proposed, Endangered, Threatened federally listed species and Regional Forester

Sensitive species INT Introduced INV Invasive NOX Noxious Weeds

Note: To find codes for other species, check the plants website at: http://plants.usda.gov

Scientific Name Common Name Code LF PETS INT INV NOX Trees Tree, deciduous tree, deciduous 2TD Tree Tree, evergreen tree, evergreen 2TE Tree Abies balsamea balsam fir ABBA Tree Acer negundo boxelder ACNE2 Tree Acer nigrum black maple ACNI5 Tree

Scientific Name Common Name Code LF PETS INT INV NOX

Trees (cont.)

Acer pensylvanicum striped maple ACPE Tree Acer platanoides Norway maple ACPL Tree X X Acer rubrum red maple ACRU Tree Acer saccharinum silver maple ACSA2 Tree Acer saccharum sugar maple ACSA3 Tree Acer spicatum mountain maple ACSP2 Tree Aesculus hippocastanum horse chestnut AEHI Tree X Aesculus buckeye AESCU Tree Ailanthus altissima tree of heaven AIAL Tree X X Albizia julibrissin Silktree X X Alnus incana ssp. rugosa speckled alder ALINR Tree Alnus alder ALNUS Tree Amelanchier arborea common serviceberry AMAR3 Tree

Amelanchier serviceberry AMELA Tree Aralia elata Japanese angelica tree AREL8 Tree X

Aralia spinosa devil's walkingstick

ARSP2 Tree

Betula alleghaniensis yellow birch BEAL2 Tree Betula lenta sweet birch BELE Tree Betula nigra river birch BENI Tree Betula papyrifera paper birch BEPA Tree Betula populifolia gray birch BEPO Tree http://plants.usda.gov/ http://plants.usda.gov/java/profile?symbol=ABBA http://plants.usda.gov/java/profile?symbol=ACNE2 http://plants.usda.gov/java/profile?symbol=ACNI5 http://plants.usda.gov/java/profile?symbol=ACPE http://plants.usda.gov/java/profile?symbol=ACPL http://plants.usda.gov/java/profile?symbol=ACRU http://plants.usda.gov/java/profile?symbol=ACSA2 http://plants.usda.gov/java/profile?symbol=ACSA3 http://plants.usda.gov/java/profile?symbol=ACSP2 http://plants.usda.gov/java/profile?symbol=AEHI http://plants.usda.gov/java/profile?symbol=AESCU http://plants.usda.gov/java/profile?symbol=AIAL http://plants.usda.gov/java/profile?symbol=ALINR http://plants.usda.gov/java/profile?symbol=ALNUS http://plants.usda.gov/java/profile?symbol=AMAR3 http://plants.usda.gov/java/profile?symbol=AMELA http://plants.usda.gov/java/profile?symbol=AREL8 http://plants.usda.gov/java/profile?symbol=ARSP2 http://plants.usda.gov/java/profile?symbol=BEAL2 http://plants.usda.gov/java/profile?symbol=BELE http://plants.usda.gov/java/profile?symbol=BENI http://plants.usda.gov/java/profile?symbol=BEPA http://plants.usda.gov/java/profile?symbol=BEPO

Carya alba mockernut hickory

CAAL27 Tree

Carpinus caroliniana American hornbeam

CACA18 Tree

Carya cordiformis bitternut hickory CACO15 Tree Castanea dentata American chestnut CADE12 Tree

Carya glabra pignut hickory CAGL8 Tree Carya laciniosa shellbark hickory CALA21 Tree

Carya ovata shagbark hickory

CAOV2 Tree

Carya hickory CARYA Tree Cercis canadensis eastern redbud CECA4 Tree Celtis occidentalis common hackberry CEOC Tree

Cornus florida flowering dogwood

COFL2 Tree

Cornus dogwood CORNU Tree Cornus sericea Redosier dogwood COSE16 Tree

Crataegus hawthorn CRATA Tree Fagus grandifolia American beech FAGR Tree Fraxinus americana white ash FRAM2 Tree Fraxinus nigra black ash FRNI Tree Fraxinus pennsylvanica green ash FRPE Tree Gleditsia triacanthos honeylocust GLTR Tree X

Scientific Name Common Name Code LF PETS INT INV NOX

Trees (cont.)

Hamamelis virginiana American witchhazel HAVI4 Tree

Ilex montana mountain holly ILMO Tree Ilex opaca American holly ILOP Tree X Ilex verticillata common winterberry ILVE Tree

Juglans cinerea butternut JUCI Tree Juglans nigra black walnut JUNI Tree Juniperus virginiana eastern redcedar JUVI Tree Kalmia angustifolia sheep laurel KAAN Tree Kalmia latifolia mountain laurel KALA Tree Larix laricina tamarack LALA Tree Larix larch LARIX Tree Liquidambar styraciflua sweetgum LIST2 Tree Liriodendron tulipifera tuliptree LITU Tree Magnolia acuminata cucumber-tree MAAC Tree Nyssa sylvatica blackgum NYSY Tree Ostrya virginiana hophornbeam OSVI Tree Picea abies Norway spruce PIAB Tree X Picea glauca white spruce PIGL Tree Picea mariana black spruce PIMA Tree Pinus resinosa red pine PIRE Tree Pinus rigida pitch pine PIRI Tree Picea rubens red spruce PIRU Tree http://plants.usda.gov/java/profile?symbol=CAAL27 http://plants.usda.gov/java/profile?symbol=CACA18 http://plants.usda.gov/java/profile?symbol=CACO15 http://plants.usda.gov/java/profile?symbol=CADE12 http://plants.usda.gov/java/profile?symbol=CAGL8 http://plants.usda.gov/java/profile?symbol=CALA21 http://plants.usda.gov/java/profile?symbol=CAOV2 http://plants.usda.gov/java/profile?symbol=CARYA http://plants.usda.gov/java/profile?symbol=CECA4 http://plants.usda.gov/java/profile?symbol=CEOC http://plants.usda.gov/java/profile?symbol=COFL2 http://plants.usda.gov/java/profile?symbol=CORNU http://plants.usda.gov/java/profile?symbol=COSE16 http://plants.usda.gov/java/profile?symbol=CRATA http://plants.usda.gov/java/profile?symbol=FAGR http://plants.usda.gov/java/profile?symbol=FRAM2 http://plants.usda.gov/java/profile?symbol=FRNI http://plants.usda.gov/java/profile?symbol=FRPE http://plants.usda.gov/java/profile?symbol=GLTR http://plants.usda.gov/java/profile?symbol=HAVI4 http://plants.usda.gov/java/profile?symbol=ILMO http://plants.usda.gov/java/profile?symbol=ILOP http://plants.usda.gov/java/profile?symbol=ILVE http://plants.usda.gov/java/profile?symbol=JUCI http://plants.usda.gov/java/profile?symbol=JUNI http://plants.usda.gov/java/profile?symbol=JUVI http://plants.usda.gov/java/profile?symbol=KAAN http://plants.usda.gov/java/profile?symbol=KALA http://plants.usda.gov/java/profile?symbol=LALA http://plants.usda.gov/java/profile?symbol=LARIX http://plants.usda.gov/java/profile?symbol=LIST2 http://plants.usda.gov/java/profile?symbol=LITU http://plants.usda.gov/java/profile?symbol=MAAC http://plants.usda.gov/java/profile?symbol=NYSY http://plants.usda.gov/java/profile?symbol=OSVI http://plants.usda.gov/java/profile?symbol=PIAB http://plants.usda.gov/java/profile?symbol=PIGL http://plants.usda.gov/java/profile?symbol=PIMA http://plants.usda.gov/java/profile?symbol=PIRE http://plants.usda.gov/java/profile?symbol=PIRI http://plants.usda.gov/java/profile?symbol=PIRU

Pinus strobus eastern white pine

PIST Tree

Pinus sylvestris Scots pine PISY Tree X Platanus occidentalis American sycamore PLOC Tree

Populus balsamifera balsam poplar POBA2 Tree Populus deltoides eastern cottonwood PODE3 Tree

Populus grandidentata bigtooth aspen POGR4 Tree Populus tremuloides quaking aspen POTR5 Tree Prunus alleghaniensis Allegheny plum PRAL5 Tree Prunus avium sweet cherry PRAV Tree X Prunus pensylvanica pin cherry PRPE2 Tree Prunus serotina black cherry PRSE2 Tree Prunus virginiana chokecherry PRVI Tree Pyrus calleryana Bradford Pear X Quercus alba white oak QUAL Tree Quercus bicolor swamp white oak QUBI Tree

Quercus coccinea scarlet oak QUCO2 Tree Quercus oak QUERC Tree Quercus palustris pin oak QUPA2 Tree Quercus prinus chestnut oak QUPR2 Tree Quercus rubra northern red oak QURU Tree Quercus shumardii Shumard's oak QUSH Tree X Quercus velutina black oak QUVE Tree

Scientific Name Common Name Code LF PETS INT INV NOX

Trees (cont.)

Rhamnus buckthorn RHAMN Tree X Rhamnus cathartica common buckthorn RHCA3 Tree X X

Robinia locust ROBIN Tree Robinia pseudoacacia black locust ROPS Tree Sassafras albidum sassafras SAAL5 Tree Salix willow SALIX Tree Sambucus nigra ssp. canadensis common elderberry SANIC4 Tree

Sambucus racemosa red elderberry SARA2 Tree Taxodium distichum bald cypress TADI2 Tree Thuja occidentalis arborvitae THOC2 Tree Tilia americana American basswood TIAM Tree

Tsuga canadensis eastern hemlock TSCA Tree Ulmus americana American elm ULAM Tree Ulmus elm ULMUS Tree Ulmus rubra slippery elm ULRU Tree Viburnum viburnum VIBUR Tree Viburnum dentatum southern arrowwood VIDE Tree

Viburnum lentago nannyberry VILE Tree Viburnum nudum var. cassinoides withe-rod VINUC Tree Viburnum opulus var. americanum American cranberrybush VIOPA2 Tree X http://plants.usda.gov/java/profile?symbol=PIST http://plants.usda.gov/java/profile?symbol=PISY http://plants.usda.gov/java/profile?symbol=PLOC http://plants.usda.gov/java/profile?symbol=POBA2 http://plants.usda.gov/java/profile?symbol=PODE3 http://plants.usda.gov/java/profile?symbol=POGR4 http://plants.usda.gov/java/profile?symbol=POTR5 http://plants.usda.gov/java/profile?symbol=PRAL5 http://plants.usda.gov/java/profile?symbol=PRAV http://plants.usda.gov/java/profile?symbol=PRPE2 http://plants.usda.gov/java/profile?symbol=PRSE2 http://plants.usda.gov/java/profile?symbol=PRVI http://plants.usda.gov/java/profile?symbol=QUAL http://plants.usda.gov/java/profile?symbol=QUBI http://plants.usda.gov/java/profile?symbol=QUCO2 http://plants.usda.gov/java/profile?symbol=QUERC http://plants.usda.gov/java/profile?symbol=QUPA2 http://plants.usda.gov/java/profile?symbol=QUPR2 http://plants.usda.gov/java/profile?symbol=QURU http://plants.usda.gov/java/profile?symbol=QUSH http://plants.usda.gov/java/profile?symbol=QUVE http://plants.usda.gov/java/profile?symbol=RHAMN http://plants.usda.gov/java/profile?symbol=RHCA3 http://plants.usda.gov/java/profile?symbol=ROBIN http://plants.usda.gov/java/profile?symbol=ROPS http://plants.usda.gov/java/profile?symbol=SAAL5 http://plants.usda.gov/java/profile?symbol=SALIX http://plants.usda.gov/java/profile?symbol=SANIC4 http://plants.usda.gov/java/profile?symbol=SARA2 http://plants.usda.gov/java/profile?symbol=TADI2 http://plants.usda.gov/java/profile?symbol=THOC2 http://plants.usda.gov/java/profile?symbol=TIAM http://plants.usda.gov/java/profile?symbol=TSCA http://plants.usda.gov/java/profile?symbol=ULAM http://plants.usda.gov/java/profile?symbol=ULMUS http://plants.usda.gov/java/profile?symbol=ULRU http://plants.usda.gov/java/profile?symbol=VIBUR http://plants.usda.gov/java/profile?symbol=VIDE http://plants.usda.gov/java/profile?symbol=VILE http://plants.usda.gov/java/profile?symbol=VINUC http://plants.usda.gov/java/profile?symbol=VIOPA2

Viburnum prunifolium blackhaw VIPR Tree Zanthoxylum americanum common pricklyash ZAAM Tree

Zanthoxylum pricklyash ZANTH Tree

Scientific Name Common Name Code LF PETS INT INV NOX

Shrub Shrub shrub 2SHRUB Shrub Berberis thunbergii Japanese barberry BETH Shrub X X

Berberis vulgaris common barberry

BEVU Shrub X X

Elaeagnus elaeagnus ELAEA Shrub X Elaeagnus umbellata autumn olive ELUM Shrub X X Elaeagnus angustifolia Russian olive X Ligustrum privet LIGUS2 Shrub X Lonicera japonica Japanese honeysuckle LOJA Shrub X X

Lonicera maackii Amur honeysuckle

LOMA6 Shrub X X

Lonicera morrowii Morrow's honeysuckle

LOMO2 Shrub X X

Lonicera tatarica Tatarian honeysuckle

LOTA Shrub X X

Malus apple MALUS Shrub Rhododendron rhododendron RHODO Shrub Vines Hedera helix English ivy HEHE Vine X X Pueraria montana kudzu PUMO Vine X X Rosa multiflora multiflora rose ROMU Vine X X X Vinca major bigleaf periwinkle VIMA Vine X X

Vinca minor common periwinkle

VIMI2 Vine X X

Vinca periwinkle VINCA Vine X X Vitis grape VITIS Vine X Forbs Ajuga bugle AJUGA Forb X Alliaria petiolata garlic mustard ALPE4 Forb X X Carduus acanthoides spiny plumeless thistle CAAC Forb X X

Centaurea jacea brownray knapweed

CEJA Forb X X

Celastrus orbiculatus Oriental bittersweet

CEOR7 Forb X X

Cirsium arvense Canada thistle CIAR4 Forb X X X Cirsium vulgare bull thistle CIVU Forb X X X Euphorbia esula leafy spurge EUES Forb X X Frangula alnus glossy buckthorn FRAL4 Forb X X X

Heracleum mantegazzianum giant hogweed HEMA17 Forb X X X Hieracium hawkweed HIERA Forb X Lythrum salicaria purple loosestrife LYSA2 Forb X X X http://plants.usda.gov/java/profile?symbol=VIPR http://plants.usda.gov/java/profile?symbol=ZAAM http://plants.usda.gov/java/profile?symbol=ZANTH http://plants.usda.gov/java/profile?symbol=BETH http://plants.usda.gov/java/profile?symbol=BEVU http://plants.usda.gov/java/profile?symbol=ELAEA http://plants.usda.gov/java/profile?symbol=ELUM http://plants.usda.gov/java/profile?symbol=LIGUS2 http://plants.usda.gov/java/profile?symbol=LOJA http://plants.usda.gov/java/profile?symbol=LOMA6 http://plants.usda.gov/java/profile?symbol=LOMO2 http://plants.usda.gov/java/profile?symbol=LOTA http://plants.usda.gov/java/profile?symbol=MALUS http://plants.usda.gov/java/profile?symbol=RHODO http://plants.usda.gov/java/profile?symbol=HEHE http://plants.usda.gov/java/profile?symbol=PUMO http://plants.usda.gov/java/profile?symbol=ROMU http://plants.usda.gov/java/profile?symbol=VIMA http://plants.usda.gov/java/profile?symbol=VIMI2 http://plants.usda.gov/java/profile?symbol=VINCA http://plants.usda.gov/java/profile?symbol=VITIS http://plants.usda.gov/java/profile?symbol=AJUGA http://plants.usda.gov/java/profile?symbol=ALPE4 http://plants.usda.gov/java/profile?symbol=CAAC http://plants.usda.gov/java/profile?symbol=CEJA http://plants.usda.gov/java/profile?symbol=CEOR7 http://plants.usda.gov/java/profile?symbol=CIAR4 http://plants.usda.gov/java/profile?symbol=CIVU http://plants.usda.gov/java/profile?symbol=EUES http://plants.usda.gov/java/profile?symbol=FRAL4 http://plants.usda.gov/java/profile?symbol=HEMA17 http://plants.usda.gov/java/profile?symbol=HIERA http://plants.usda.gov/java/profile?symbol=LYSA2

Malaxis brachypoda white adder's-mouth orchid

MABR5 Forb X

Panax quinquefolius American ginseng

PAQU Forb X

Polygonum cuspidatum Japanese knotweed

POCU6 Forb X X X

Polygonum sachalinense giant knotweed POSA4 Forb X X Securigera varia crownvetch SEVA4 Forb X X http://plants.usda.gov/java/profile?symbol=MABR5 http://plants.usda.gov/java/profile?symbol=PAQU http://plants.usda.gov/java/profile?symbol=POCU6 http://plants.usda.gov/java/profile?symbol=POSA4 http://plants.usda.gov/java/profile?symbol=SEVA4

MNF Field Procedures Handbook for Common Stand Exam

Appendix F: Fixed Radius Plot

1.

Determine the slope limiting distance to borderline trees by using the "Slope Correction Table" (The slope being corrected is the slope from plot center to the tree, not the overall plot slope.). Measure the distance parallel to the ground line to the borderline tree. This method always results in an oval plot on the slope.

Following is a list of fixed plot sizes and the specific radius for each:

Plot Size Plot Radius Plot Size Plot Radius Plot Size Plot Radius 1/1000 3.7 feet 1/200 8.3 feet 1/5 52.7 feet 1/500 5.3 feet 1/150 9.6 feet 1/4 58.9 feet 1/400 5.9 feet 1/100 11.8 feet 1/3 67.6 feet 1/385 6.0 feet 1/50 16.7 feet 1/2 83.3 feet 1/300 6.8 feet 1/20 26.3 feet 1 117.1 feet 1/250 7.4 feet 1/10 37.2 feet

To determine the slope limiting distance, multiply the plot radius for the appropriate plot size by the appropriate slope correction factor.

Example 1 1/300 acre fixed plot with a borderline tree on a 45 percent slope. A 1/300-acre plot equals a 6.8-foot radius and the slope correction factor for a 45 percent slope is 1.10. 6.8 x 1.10 = 7.48; thus, a tree on a 1/300 acre fixed plot at a 45 percent slope can be 7.5 feet from plot center.

Example 2 The same plot has another borderline tree on a 25 percent slope. The slope correction factor for a 25 percent slope is 1.03. 6.8 x 1.03 = 7.0; thus, a tree on a 1/300 acre fixed plot at a 25 percent slope can be 7.0 feet from plot center.

Slope Correction Table Percent Degree of Correction Percent Degree Correction Percent Degree of Correction of Slope Slope Factor of Slope Slope Factor of Slope Slope Factor

0 to 9 0-6 1.00 78 to 79 38 1.27 117 49 1.54 10 to 17 7-10 1.01 80 39 1.28 118 to 119 50 1.55 18 to 22 11-12 1.02 81 to 82 39 1.29 120 50 1.56 23 to 26 13-14 1.03 83 40 1.30 121 50 1.57 27 to 30 15-17 1.04 84 to 85 40 1.31 122 51 1.58 31 to 33 18 1.05 86 41 1.32 123 to 124 51 1.59 34 to 36 19-20 1.06 87 to 88 41 1.33 125 51 1.60 37 to 39 21 1.07 89 42 1.34 126 52 1.61 40 to 42 22 1.08 90 to 91 42 1.35 127 to 128 52 1.62 43 to 44 23 1.09 92 43 1.36 129 52 1.63 45 to 47 24 1.10 93 to 94 43 1.37 130 52 1.64 48 to 49 25-26 1.11 95 44 1.38 131 53 1.65 50 to 51 27 1.12 96 to 97 44 1.39 132 to 133 53 1.66 52 to 53 28 1.13 98 44 1.40 134 53 1.67 54 to 55 29 1.14 99 to 100 45 1.41 135 53 1.68

56 to 57 29 1.15 101 45 1.42 136 54 1.69 58 to 59 30 1.16 102 46 1.43 137 to 138 54 1.70 60 to 61 31 1.17 103 to104 46 1.44 139 54 1.71 62 to 63 32 1.18 105 46 1.45 140 54 1.72 64 to 65 33 1.19 106 to107 47 1.46 141 55 1.73 66 to 67 34 1.20 108 47 1.47 142 to 143 55 1.74 68 to 69 34 1.21 109 47 1.48 144 55 1.75

70 35 1.22 110 to 111 48 1.49 145 55 1.76 71 to 72 36 1.23 112 48 1.50 146 56 1.77 73 to 74 37 1.24 113 48 1.51 147 56 1.78

75 37 1.25 114 to 115 49 1.52 148 to 149 56 1.79 76 to 77 38 1.26 116 49 1.53 150 56 1.80

Appendix G: Variable Radius Plot

Measurement of Borderline Trees to Determine “In or Out” Status In variable plot sampling, the plot radius varies according to the DBH or DRC of each tree. To determine whether a tree is to be sampled requires measurement of its DBH or DRC and its distance from plot center. Table 2 displays limiting distances (the maximum horizontal distance from plot center to the face of the tree at breast height for a tree to be considered “in”) for various tree diameters and basal area factor (BAF) 20.

Once the DBH or DRC of the borderline tree is taken, the limiting distance is found by entering the table appropriate for the specified BAF. This limiting distance is then compared to the horizontal distance between plot center and the nearest face of the tree at breast height. If the measured horizontal distance from plot center is less than or equal to the limiting distance from the table, the tree in question is “in” and is tallied as a sample tree. However, if measured horizontal distance from plot center is greater than the limiting distance, then the tree in question is “out” and is not tallied.

1. Measure the diameter to the nearest tenth of an inch

2. Measure the percent slope from the face of the tree at DBH or DRC to plot center

If the slope is less than ten percent look up limiting distance in Table 2 or use the BAF correction factors listed in Table 1 below.

Table 1: BAF correction factors

Type Correction Factors

BAF 10 15 20 25 30 35 40 50 60

Plot Radius Factor* 2.708 2.203 1.902 1.697 1.546 1.428 1.333 1.188 1.081

* This is a corrected plot radius factor, corrected for determining the limiting distance to the face of the tree. A standard plot radius factor was used to determine limiting distance to the center of a tree, and is computed by 8.696/SQR(BAF). A corrected PRF subtracts 1/24 (0.041666) from the standard plot radius factor.

Example:

BAF = 40; DBH = 20.9 inches; Slope = 5% Limiting Distance = Plot Radius Factor * DBH, 1.333 * 20.9 = 27.9 feet

3. If the slope is greater than ten percent, first determine the slope correction factor. The slope correction factor and the slope corrected plot radius factor can be obtained by using the formula below or by referring to Table 3.

Then, multiply the slope correction factor by the plot radius factor identified in step #3 above to obtain the slope corrected plot radius factor. Finally, multiply the slope corrected plot radius factor by the diameter to obtain the limiting distance.

Example:

BAF = 40; DBH = 20.9 inches; Slope = 20% Slope Correction Factor = SQR (1 + (slope/100)2) = SQR (1 + (20/100)2) = 1.0198 Slope Corrected Plot Radius Factor = Slope Correction Factor * Plot Radius Factor = 1.0198 * 1.333 = 1.359 Limiting Distance = Slope Corrected Plot Radius Factor * DBH = 1.359 * 20.9 = 28.4 feet

4. Measure the distance from plot center to the face of the tree, nearest plot center, at DBH or DRC. Both the slope measurement and distance measurement must be taken at plot center. If the measured distance is less than the limiting distance, the tree is “in.”

Figure 1: Determining limiting distance on a slope

Example:

BAF = 40; DBH = 15.0; Slope = 50%; Slope Distance = 21.0 feet Referring to Table 3, the Combined Factor for a slope of 50% with a 40 BAF is 1.490.

Limiting Distance = DBH * Combined Factor = 15.0 * 1.490 = 22.35 Since 21.0 is less than or equal to the limiting distance of 22.35 feet, the tree is “in” and is tallied as a sample tree.

Measuring “In” or “Out” Down Trees Down trees are “in” or “out” of the variable plot radius based on where the DBH or DRC now lies, not on where the tree once stood. The distance measurement is taken from plot center to the nearest face of the tree at breast height.

Table 2: BAF 20 Plot Radii in Feet and Tenths of Feet from Plot Center to Face of Tree at DBH for 0% Slope

Inches 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

5 9.5 9.7 9.9 10.1 10.3 10.5 10.7 10.8 11.0 11.2

6 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 12.9 13.1

7 13.3 13.5 13.7 13.9 14.1 14.3 14.5 14.7 14.8 15.0

8 15.2 15.4 15.6 15.8 16.0 16.2 16.4 16.6 16.8 16.9

9 17.1 17.3 17.5 17.7 17.9 18.1 18.3 18.5 18.6 18.8

10 19.0 19.2 19.4 19.6 19.8 20.0 20.2 20.4 20.6 20.7

11 20.9 21.1 21.3 21.5 21.7 21.9 22.1 22.3 22.5 22.6

12 22.8 23.0 23.2 23.4 23.6 23.8 24.0 24.2 24.4 24.5

13 24.7 24.9 25.1 25.3 25.5 25.7 25.9 26.1 26.3 26.5

14 26.6 26.8 27.0 27.2 27.4 27.6 27.8 28.0 28.2 28.4

15 28.5 28.7 28.9 29.1 29.3 29.5 29.7 29.9 30.1 30.3

16 30.4 30.6 30.8 31.0 31.2 31.4 31.6 31.8 32.0 32.2

Inches 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

17 32.4 32.5 32.7 32.9 33.1 33.3 33.5 33.7 33.9 34.1

18 34.3 34.4 34.6 34.8 35.0 35.2 35.4 35.6 35.8 36.0

19 36.2 36.3 36.5 36.7 36.9 37.1 37.3 37.5 37.7 37.9

20 38.1 38.3 38.4 38.6 38.8 39.0 39.2 39.4 39.6 39.8

21 40.0 40.2 40.3 40.5 40.7 40.9 41.1 41.3 41.5 41.7

22 41.9 42.1 42.2 42.4 42.6 42.8 43.0 43.2 43.4 43.6

23 43.8 44.0 44.1 44.3 44.5 44.7 44.9 45.1 45.3 45.5

24 45.7 45.9 46.1 46.2 46.4 46.6 46.8 47.0 47.2 47.4

25 47.6 47.8 48.0 48.1 48.3 48.5 48.7 48.9 49.1 49.3

26 49.5 49.7 49.9 50.0 50.2 50.4 50.6 50.8 51.0 51.2

27 51.4 51.6 51.8 52.0 52.1 52.3 52.5 52.7 52.9 53.1

28 53.3 53.5 53.7 53.9 54.0 54.2 54.4 54.6 54.8 55.0

29 55.2 55.4 55.6 55.8 55.9 56.1 56.3 56.5 56.7 56.9

30 57.1 57.3 57.5 57.7 57.9 58.0 58.2 58.4 58.6 58.8

31 59.0 59.2 59.4 59.6 59.8 59.9 60.1 60.3 60.5 60.7

32 60.9 61.1 61.3 61.5 61.7 61.8 62.0 62.2 62.4 62.6

33 62.8 63.0 63.2 63.4 63.6 63.8 63.9 64.1 64.3 64.5

34 64.7 64.9 65.1 65.3 65.5 65.7 65.8 6.0 66.2 66.4

35 66.6 66.8 67.0 67.2 67.4 67.6 67.7 67.9 68.1 68.3

36 68.5 68.7 68.9 69.1 69.3 69.5 69.6 69.8 70.0 70.2

37 70.4 70.6 70.8 71.0 71.2 71.4 71.6 71.7 71.9 72.1

38 72.3 72.5 72.7 72.9 73.1 73.3 73.5 73.6 73.8 74.0

39 74.2 74.4 74.6 74.8 75.0 75.2 75.4 75.5 75.7 75.9

40 76.1 76.3 76.5 76.7 76.9 77.1 77.3 77.5 77.6 77.8

41 78.0 78.2 78.4 78.6 78.8 79.0 79.2 79.4 79.5 79.7

42 79.9 80.1 80.3 80.5 80.7 80.9 81.1 81.3 81.4 81.6

43 81.8 82.0 82.2 82.4 82.6 82.8 83.0 83.2 83.4 83.5

44 83.7 83.9 84.1 84.3 84.5 84.7 84.9 85.1 85.3 85.4

45 85.6 85.8 86.0 86.2 86.4 86.6 86.8 87.0 87.2 87.3

46 87.5 87.7 87.9 88.1 88.3 88.5 88.7 88.9 89.1 89.3

47 89.4 89.6 89.8 90.0 90.2 90.4 90.6 90.8 91.0 91.2

48 91.3 91.5 91.7 91.9 92.1 92.3 92.5 92.7 92.9 93.1

49 93.2 93.4 93.6 93.8 94.0 94.2 94.4 94.6 94.8 95.0

50 95.2 95.3 95.5 95.7 95.9 96.1 96.3 96.5 96.7 96.9

Prepared by multiplying the BAF 20 Plot Radius Factor 1.902 * DBH. For example, if DBH = 14.3 inches, then 14.3 * 1.903 = 27.

Table 3: Limiting Distances to Face of Tree and Slope Correction Factors for Various Basal Area Factors This table provides an expanded list of slope correction factors to the face of the tree for use with various basal area factors. To use the table, measure the slope and distance from plot-center to the face of the tree at DBH.

To obtain the corrected limiting distance to a tree, multiply the tree’s DBH by the “combined factor” shown under the appropriate BAF heading.

Slope Factor 5 BAF 10 BAF 15 BAF 20 BAF 30 BF 40 BAF

1 1.00000 3.847 2.708 2.203 1.902 1.546 1.333

2 1.00020 3.848 2.709 2.203 1.902 1.546 1.333

3 1.00045 3.489 2.709 2.204 1.903 1.547 1.334

4 1.00080 3.850 2.710 2.205 1.904 1.547 1.334

5 1.00125 3.852 2.711 2.206 1.904 1.548 1.335

6 1.00180 3.854 2.713 2.207 1.905 1.549 1.335

7 1.00245 2.856 2.715 2.208 1.907 1.550 1.336

8 1.00319 3.859 2.717 2.210 1.908 1.551 1.337

9 1.00404 3.863 2.719 2.212 1.910 1.552 1.338

10 1.00499 3.866 2.722 2.214 1.911 1.554 1.340

11 1.00603 3.870 2.724 2.216 1.912 1.555 1.341

12 1.00717 3.875 2.727 2.219 1.916 1.557 1.341

13 1.00841 3.879 2.731 2.222 1.918 1.559 1.344

14 1.00975 3.884 2.734 2.224 1.921 1.567 1.346

15 1.01119 3.890 2.738 2.228 1.923 1.563 1/348

16 1.01272 3.896 2.742 2.231 1.926 1.566 1.350

17 1.01435 3.902 2.747 2.235 1.921 1.568 1.352

18 1.01607 3.909 2.752 2.238 1.933 1.571 1.354

19 1.01789 3.916 2.756 2.245 1.936 1.574 1.357

20 1.01980 3.923 2.762 2.245 1.940 1.577 1.359

21 1.02181 3.931 2.767 2.251 1.943 1.580 1.362

22 1.02391 3.939 2.773 2.256 1.947 1.583 1.365

23 1.02611 3.947 2.779 2.261 1.952 1.586 1.368

24 1.02840 3.956 2.785 2.266 1.956 1.590 1.371

25 1.03078 3.965 2.791 2.271 1.967 1.594 1.374

26 1.03325 3.975 2.798 2.276 1.965 1.597 1.377

27 1.03581 3.985 2.805 2.282 1.970 1.601 1.381

28 1.03846 3.995 2.812 2.288 1.975 1.605 1.384

Slope Factor 5 BAF 10 BAF 15 BAF 20 BAF 30 BF 40 BAF

29 1.04120 4.005 2.820 2.294 1.980 1.610 1.388

30 1.04403 4.016 2.827 2.300 1.986 1.614 1.392

31 1.04695 4.028 2.835 2.306 1.991 1.619 1.396

32 1.04995 4.039 2.843 2.313 1.997 1.623 1.400

33 1.05304 4.051 2.852 2.320 2.003 1.628 1.404

34 1.05622 4.063 2.960 2.327 2.009 1.633 1.408

35 1.05948 4.076 2.869 2.334 2.015 1.638 1.412

36 1.06283 4.089 2.878 2.341 2.022 1.643 1.417

37 1.06626 4.102 2.887 2.349 2.028 1.648 4.421

38 1.06977 4.115 2.897 2.357 2.035 1.654 1.426

39 1.07336 4.129 2.907 2.365 2.042 1.659 1.431

40 1.07703 4.143 2.917 2.373 2.049 1.665 1.436

41 1.08079 4.158 2.927 2.381 2.056 1.671 1.441

42 1.08462 4.173 2.937 2.389 2.063 1.677 1.446

43 1.08853 4.188 2.948 2.398 2.070 1.683 1.451

44 1.09252 4.203 2.959 2.407 2.078 1.689 1.456

45 1.09659 4.219 2.970 2.416 2.086 1.695 1.462

46 1.10073 4.235 2.981 2.425 2.094 1.702 1.467

47 1.10494 4.251 2.992 2.434 2.102 1.708 1.473

48 1.10923 4.267 3.004 2.444 2.110 1.715 1.479

49 1.11360 4.284 3.016 2.453 2.118 1.723 1.484

50 1.11803 4.301 3.028 2.463 2.126 1.728 1.490

51 1.12254 4.318 3.040 2.473 2135 1.735 1.496

52 1.12712 4.336 3.052 2.483 2.144 1.743 1.502

53 1.13177 4.354 3.065 2.493 2.153 1.750 1.509

54 1.13649 4.372 3.078 2.504 2.162 1.757 1.515

55 1.14127 4.390 3.091 2.514 2.171 1.764 1.521

56 1.14612 4.409 3.104 2.525 2.180 1.772 1.528

57 1.15104 4.428 3.117 2.536 2.189 1.780 1.534

58 1.15603 4.447 3.131 2.547 2.199 1.788 1.541

59 1.16108 4.467 3.144 2.558 2.208 1.795 1.548

60 1.16619 4.486 3.158 2.569 2.218 1.803 1.555

61 1.17137 4.506 3.172 2.581 2.228 1.811 1.561

62 1.17661…