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Harvard Forest Data Archive

HF037

Vegetation Inventory of Harvard Forest 1986-1993

Related Publications

Data

Overview

  • Lead: Ernest Gould, David Foster
  • Investigators: Emery Boose, John Edwards
  • Contact: Emery Boose
  • Start date: 1986
  • End date: 1993
  • Status: completed
  • Location: Harvard Forest
  • Latitude: +42.45 to +42.55
  • Longitude: -72.23 to -72.16
  • Elevation: 205 to 420 meter
  • Taxa:
  • Release date: 2003
  • Revisions:
  • EML file: knb-lter-hfr.37.17
  • DOI: digital object identifier
  • Related links:
  • Study type: short-term measurement
  • Research topic: large experiments and permanent plot studies
  • LTER core area: populations
  • Keywords: inventories, permanent plots, vegetation dynamics
  • Abstract:

    The three main tracts of the Harvard Forest (3000 acres) in Petersham MA have been sampled every 10-30 years since 1907. Though methods have varied, each survey has involved mapping forest stands followed by intensive sampling. This inventory was completed in 1986-1993.

  • Methods:

    Stands were identified using color infared maps taken in fall 1985 for the Massachusetts Department of Environmental Management. Stand boundaries were verified on the ground. A minimum of three randomly located, variable radius, permanent plots were established in each stand. Each plot was measured using a standard forestry prism.

  • Use:

    This dataset is released to the public under Creative Commons license CC BY (Attribution). Please keep the designated contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement.

  • Citation:

    Gould E, Foster D. 2003. Vegetation Inventory of Harvard Forest 1986-1993. Harvard Forest Data Archive: HF037.

Detailed Metadata

hf037-01: stand data

  1. stand: stand number. First character indicates the Harvard Forest tract (P = Prospect Hill, S = Slab City, T = Tom Swamp). Second character indicates compartment number (A = 10). Third and fourth characters indicate stand number.
  2. plot: plot number
  3. tree: tree number
  4. species: species abbreviation
    • BA: Black Ash
    • BB: Black Birch
    • BC: Black Cherry
    • BE: Beech
    • BL: Black Locust
    • BO: Black Oak
    • BS: Black Spruce
    • BW: Basswood
    • CH: Chestnut
    • CO: Chestnut Oak
    • EL: Elm
    • GB: Gray Birch
    • HO: Hornbeam
    • IW: Ironwood
    • LA: Largetoothed Aspen
    • LR: Larch
    • MM: Mountain Maple
    • NS: Norway Spruce
    • OT: Other
    • PC: Pin Cherry
    • PH: Pignut Hickory
    • PP: Pitch Pine
    • RM: Red Maple
    • RO: Red Oak
    • RP: Red Pine
    • RS: Red Spruce
    • SH: Shagbark Hickory
    • SM: Sugar Maple
    • SO: Scarlet Oak
    • SP: Scotch Pine
    • ST: Striped Maple
    • TA: Trembling Aspen
    • TP: Tulip Popular
    • TS: Hemlock
    • WA: White Ash
    • WB: White Birch
    • WO: White Oak
    • WP: White Pine
    • WS: White Spruce
    • YB: Yellow Birch
  5. dbh: diameter-at-breast-height class
    • 1: sawtimber
    • 2: poletimber
    • 3: seedling/sapling
  6. pieces: number of usable 8-foot pieces (unit: number / missing value: NA)
  7. form: form class
    • 1: good
    • 2: poor
  8. crown: crown class
    • 1: dominant & codominant
    • 2: intermediate
    • 3: overtopped
  9. note: field notes
    • B: broken
    • D: dead but salvageable
    • F: forked
    • M: moribund but salvageable
    • O: other
    • R: rot
    • S: scars
    • W: wolf tree
    • X: sawlog size but usable only as cordwood

hf037-02: summary data

  1. stand: stand number. First character indicates the Harvard Forest tract (P = Prospect Hill, S = Slab City, T = Tom Swamp). Second character indicates compartment number (A = 10). Third and fourth characters indicate stand number.
  2. acres: number of acres in stand (unit: acre / missing value: NA)
  3. plots: number of plots in stand (unit: number / missing value: NA)
  4. type: predominant forest type, based on basal area of dominant and intermediate trees, not dead, not moribund
    • H: hardwood if 75% basal area is hardwood
    • S: softwood if 75% basal area is softwood
    • M: mixed
  5. size: tree size. Based on volume of dominant and intermediate trees, not dead, not moribund.
    • S: sawtimber if 50% volume is sawtimber
    • P: poletimber if 50% volume is poletimber
    • D: seedling/sapling
  6. form: tree form. Sawtimber stands only. Based on volume of dominant and intermediate sawtimber trees, not dead, not moribund.
    • G: good if 75% volume is good
    • P: poor if 75% volume is poor
    • F: fair
    • -: stand is not a sawtimber stand
  7. spec1: predominant species
    • BB: Black Birch
    • BC: Black Cherry
    • BO: Black Oak
    • BS: Black Spruce
    • GB: Gray Birch
    • LA: Largetoothed Aspen
    • NS: Norway Spruce
    • PH: Pignut Hickory
    • RM: Red Maple
    • RO: Red Oak
    • RP: Red Pine
    • SH: Shagbark Hickory
    • SM: Sugar Maple
    • TA: Trembling Aspen
    • TS: Hemlock
    • WA: White Ash
    • WB: White Birch
    • WO: White Oak
    • WP: White Pine
    • WS: White Spruce
    • YB: Yellow Birch
    • --: Previous elements in list have accounted for 75% of basal area
  8. spec2: predominant species. Based on basal area of dominant and intemediate trees, not dead, not moribund. Species are listed in order of basal area, until five are listed or until the species listed account for 75% of the basal area, whichever comes first.
    • BB: Black Birch
    • BC: Black Cherry
    • BE: Beech
    • BO: Black Oak
    • CH: Black Spruce
    • EL: Elm
    • GB: Gray Birch
    • LA: Largetoothed Aspen
    • NS: Norway Spruce
    • PH: Pignut Hickory
    • RM: Red Maple
    • RO: Red Oak
    • RP: Red Pine
    • RS: Red Spruce
    • SH: Shagbark Hickory
    • SM: Sugar Maple
    • SO: Scarlet Oak
    • TS: Hemlock
    • WA: White Ash
    • WB: White Birch
    • YB: Yellow Birch
    • --: Previous elements in list have accounted for 75% of basal area
  9. spec3: Predominant species. Based on basal area of dominant and intemediate trees, not dead, not moribund. Species are listed in order of basal area, until five are listed or until the species listed account for 75% of the basal area, whichever comes first.
    • BB: Black Ash
    • BC: Black Cherry
    • BE: Beech
    • BO: Black Oak
    • BW: Basswood
    • GB: Gray Birch
    • LA: Largetoothed Aspen
    • LR: Larch
    • NS: Norway Spruce
    • RM: Red Maple
    • RO: Red Oak
    • SH: Shagbark Hickory
    • SM: Sugar Maple
    • SO: Scarlet Oak
    • TA: Trembling Aspen
    • TS: Hemlock
    • WA: White Ash
    • WB: White Birch
    • WO: White Oak
    • WP: White Pine
    • YB: Yellow Birch
    • --: Previous elements in list have accounted for 75% of basal area
  10. spec4: Predominant species. Based on basal area of dominant and intemediate trees, not dead, not moribund. Species are listed in order of basal area, until five are listed or until the species listed account for 75% of the basal area, whichever comes first.
    • BB: Black Birch
    • BC: Black Cherry
    • BE: Beech
    • BO: Black Oak
    • GB: Gray Birch
    • HO: Hornbeam
    • PH: Pignut Hickory
    • RM: Red Maple
    • RO: Red Oak
    • SM: Sugar Maple
    • TS: Hemlock
    • WA: White Ash
    • WB: White Birch
    • WO: White Oak
    • WP: White Pine
    • YB: Yellow Birch
    • --: Previous elements in list have accounted for 75% of basal area
  11. spec5: Predominant species. Based on basal area of dominant and intemediate trees, not dead, not moribund. Species are listed in order of basal area, until five are listed or until the species listed account for 75% of the basal area, whichever comes first.
    • BB: Black Birch
    • BC: Black Cherry
    • BO: Black Oak
    • RO: Red Oak
    • SM: Sugar Maple
    • TA: Trembling Aspen
    • TS: Hemlock
    • WO: White Oak
    • WP: White Pine
    • YB: Yellow Birch
    • --: Previous elements in list have accounted for 75% of basal area
  12. barea1: Basal area per acre of dominant and intermediate trees, not dead, not moribund (unit: meterSquaredPerHectare / missing value: NA)
  13. barea2: Basal area per acre of dominant and intermediate trees, not dead, not moribund. (unit: meterSquaredPerHectare / missing value: NA)
  14. cubft: volume per acre of all trees (unit: footCubed / missing value: NA)
  15. cfsal: volume per acre of dead or moribund trees (unit: footCubedPerAcre / missing value: NA)
  16. boardft: thousand board feet (mbf) per acre, based on volume of sawtimber trees, not X (sawlog size but usable only as cordwood), not dead, not moribund (unit: boardFoot / missing value: NA)
  17. cords: cords per acre based on volume of poletimber and X trees (sawlog size but usable only as cordwood), not dead, not moribund, plus 80% mbf (unit: cordPerAcre / missing value: NA)
  18. mbftot: total board feet (unit: boardFoot / missing value: NA)
  19. cdstot: total cords (unit: cord / missing value: NA)
  20. stderrv: standard error, based on volume of all trees
  21. stderrb: standard error, based on basal area of trees not dead