• Address:
  705 Spear Street
  South Burlington, Vermont 05403
  United States of America
  
  Phone: (802) 391-4135
  Email: femc@uvm.edu
  Website: www.uvm.edu/femc

A summary of the latest USDA Forest Inventory and Analysis data for the state of Vermont. The network of randomly distributed inventory plots are designed to capture broad temporal changes in the condition of the nation’s forest resource. Spatial coverages of species distribution, extent of forest cover and biomass compliment the yearly data summaries to capture an unbiased estimated of the state of Vermont's forests.

• Label: Sequence number

• Description: A unique sequence number used to identify a tree record.

• Storage Type: int

• Measurment Type: nominal

• Label: Latitude of plot

• Description: The approximate latitude of the plot in decimal degrees using NAD 83 datum. Actual plot coordinates cannot be released because of a Privacy provision enacted by Congress in the Food Security Act of 1985. Therefore, this attribute is approximately +/- 1 mile and, for annual inventory data, most plots

• Storage Type: decimal

• Measurment Type: ratio
• Standard Unit: degree
• Precision: 0.00001
• Unit: degree
• Number Type: real

• Label: Longitude of plot

• Description: The approximate longitude of the plot in decimal degrees using NAD 83 datum. Actual plot coordinates cannot be released because of a Privacy provision enacted by Congress in the Food Security Act of 1985. Therefore, this attribute is approximately +/- 1 mile and, for annual inventory data, most plot

• Storage Type: decimal

• Measurment Type: ratio
• Standard Unit: degree
• Precision: 0.00001
• Unit: degree
• Number Type: real

• Label: Eastern hemlock basal area

• Description: The total basal area of eastern hemlock (Tsuga canadensis) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Eastern hemlock annual growth

• Description: The total net annual growth of eastern hemlock (Tsuga canadensis) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Eastern hemlock net volume

• Description: Net sawlog volume of eastern hemlock (Tsuga canadensis) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Red maple basal area

• Description: The total basal area of red maple (Acer rubrum) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Red maple annual growth

• Description: The total net annual growth of red maple (Acer rubrum) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Red maple net volume

• Description: Net sawlog volume of red maple (Acer rubrum) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Sugar maple basal area

• Description: The total basal area of sugar maple (Acer saccharum) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Sugar maple annual growth

• Description: The total net annual growth of sugar maple (Acer saccharum) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Sugar maple net volume

• Description: Net sawlog volume of sugar maple (Acer saccharum) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: American beech basal area

• Description: The total basal area of American beech (Fagus grandiofola) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: American beech annual growth

• Description: The total net annual growth of American beech (Fagus grandiofola) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: American beech net volume

• Description: Net sawlog volume of American beech (Fagus grandiofola) in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Total plot basal area

• Description: The total basal area of all tree species in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Total net annual growth

• Description: The total net annual growth of all tree species in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Total net volume

• Description: Net sawlog volume of all tree species in the plot

• Storage Type: decimal

• Measurment Type: ratio

• Label: Inventory year

• Description: Year the inventory was conducted

• Storage Type: datetime

• Measurment Type: datetime

• Unnamed Method
  • Method Description: See FIA Manual in the Documents tab for full details

• Unnamed Method
  • Method Description: See FIA Manual in the Documents tab for full details

• Plot establishment
  • Method Description: Plots to be visited are selected based on stratification of remote sensing interpretation

• Plot establishment
  • Method Description: Plots to be visited are selected based on stratification of remote sensing interpretation

• Unnamed Method
  • Method Description: Plots are designed to cover a 1-acre sample area, though not all trees in the plot are measured. Recent surveys use standard fixed-radius plot, while earlier inventories used mixtures of fixed-radius and variable-radius (prism) plot design

• Unnamed Method
  • Method Description: Plots are designed to cover a 1-acre sample area, though not all trees in the plot are measured. Recent surveys use standard fixed-radius plot, while earlier inventories used mixtures of fixed-radius and variable-radius (prism) plot design

• Unnamed Method
  • Method Description: Plot locations are 'fuzzed and swapped' to protect privacy and plot integrity in accordance with Federal laws. 'Fuzzed' plots are generally within 0.5 miles of original plot center, and plots where data was 'swapped' are generally similar in nature. See FIA manual for full details

• Unnamed Method
  • Method Description: Plot locations are 'fuzzed and swapped' to protect privacy and plot integrity in accordance with Federal laws. 'Fuzzed' plots are generally within 0.5 miles of original plot center, and plots where data was 'swapped' are generally similar in nature. See FIA manual for full details

• Unnamed Method
  • Method Description: The standard plot consists of four 24.0-foot radius subplots (approximately 0.0415 or 1/24 acre), on which trees 5.0 inches and greater in diameter are measured. Within each of these subplots is nested a 6.8-foot radius microplot (approximately 1/300th acre) on which trees smaller than 5.0 inches in diameter are measured

• Unnamed Method
  • Method Description: The standard plot consists of four 24.0-foot radius subplots (approximately 0.0415 or 1/24 acre), on which trees 5.0 inches and greater in diameter are measured. Within each of these subplots is nested a 6.8-foot radius microplot (approximately 1/300th acre) on which trees smaller than 5.0 inches in diameter are measured

• Unnamed Method
  • Method Description: Conditions are defined by changes in land use or changes in vegetation that occur along more-or-less distinct boundaries. Reserved status, owner group, forest type, stand-size class, regeneration status, and stand density are used to define forest conditions. In older plot designs, plot center or subplots locations were rearranged such that the entire plot sampled a single condition, while in the current design, different conditions are “mapped” on the same plot.

• Unnamed Method
  • Method Description: Conditions are defined by changes in land use or changes in vegetation that occur along more-or-less distinct boundaries. Reserved status, owner group, forest type, stand-size class, regeneration status, and stand density are used to define forest conditions. In older plot designs, plot center or subplots locations were rearranged such that the entire plot sampled a single condition, while in the current design, different conditions are “mapped” on the same plot.

• Field attributes
  • Method Description: In addition to attributes that are collected in the field, FIADB includes attributes that are populated in the office. Examples of field attributes include tree diameter and height, and slope and aspect of the plot and subplot. Attributes that are populated in the office include assigned attributes, such as county and owner group codes, or computed attributes, such as tree and area expansion factors, and tree volumes

• Field attributes
  • Method Description: In addition to attributes that are collected in the field, FIADB includes attributes that are populated in the office. Examples of field attributes include tree diameter and height, and slope and aspect of the plot and subplot. Attributes that are populated in the office include assigned attributes, such as county and owner group codes, or computed attributes, such as tree and area expansion factors, and tree volumes

• Standards and guidelines
  • Method Description: Forest inventory plans are designed to meet sampling error standards for area, volume, growth, and removals provided in the Forest Service directive (FSH 4809.11) known as the Forest Survey Handbook (U.S. Department of Agriculture 2008). These standards, along with other guidelines, are aimed at obtaining comprehensive and comparable information on timber resources for all parts of the country

• Standards and guidelines
  • Method Description: Forest inventory plans are designed to meet sampling error standards for area, volume, growth, and removals provided in the Forest Service directive (FSH 4809.11) known as the Forest Survey Handbook (U.S. Department of Agriculture 2008). These standards, along with other guidelines, are aimed at obtaining comprehensive and comparable information on timber resources for all parts of the country