Federal Forest Inventory and Analysis Data for Vermont: Tree Metrics Summarized to the Plot Level
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► Metadata Provider
- Forest Ecosystem Monitoring Cooperative
- 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
► Abstract
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.
► People
- Randall Morin: Principal Investigator
► Geographic Coverage
- Coordinates
► Data Table
- Title: Tree Metrics Summarized to the Plot Level
- Start Date: 2003-01-01
- Description: Custom query summarizing key data by species and by year
- Purpose: FIA reports on the status and trends in forest area and location; in the species, size, and health of trees; in total tree growth and mortality.
- Condensed Title: Z0311_FIA_PlotLevelSummaryStatistics
- Object Name: VMC.311.305
- Data Type: mySQL
- Citation: Pontius, J., and S. Wilmot. 2017. Forest Health Monitoring Tree Species Codes. FEMC. Can be found at: https://www.uvm.edu/femc/data/archive/project/forest-health-monitoring/dataset/forest-health-monitoring-tree-species-codes
- Online Distribution: https://www.uvm.edu/femc/data/archive/project/federal-forest-inventory-analysis-data-for/dataset/tree-metrics-summarized-to-plot-level
► Attribute List
- Attribute Name: cn
- Label: Sequence number
- Description: A unique sequence number used to identify a tree record.
- Storage Type: int
- Measurment Type: nominal
- Attribute Name: lat
- 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
- Attribute Name: lon
- 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
- Attribute Name: s261ba
- Label: Eastern hemlock basal area
- Description: The total basal area of eastern hemlock (Tsuga canadensis) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: s261growcf
- 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
- Attribute Name: s261vol
- Label: Eastern hemlock net volume
- Description: Net sawlog volume of eastern hemlock (Tsuga canadensis) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: s316ba
- Label: Red maple basal area
- Description: The total basal area of red maple (Acer rubrum) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: s316growcf
- 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
- Attribute Name: s316vol
- Label: Red maple net volume
- Description: Net sawlog volume of red maple (Acer rubrum) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: s318ba
- Label: Sugar maple basal area
- Description: The total basal area of sugar maple (Acer saccharum) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: s318growcf
- 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
- Attribute Name: s318vol
- Label: Sugar maple net volume
- Description: Net sawlog volume of sugar maple (Acer saccharum) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: s531ba
- Label: American beech basal area
- Description: The total basal area of American beech (Fagus grandiofola) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: s531growcf
- 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
- Attribute Name: s531vol
- Label: American beech net volume
- Description: Net sawlog volume of American beech (Fagus grandiofola) in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: totalba
- Label: Total plot basal area
- Description: The total basal area of all tree species in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: totalgrowcf
- Label: Total net annual growth
- Description: The total net annual growth of all tree species in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: totalvol
- Label: Total net volume
- Description: Net sawlog volume of all tree species in the plot
- Storage Type: decimal
- Measurment Type: ratio
- Attribute Name: invyr
- Label: Inventory year
- Description: Year the inventory was conducted
- Storage Type: datetime
- Measurment Type: datetime
► Methods
- Current Methods
- 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
► Sampling Equipment
- No sampling equipment recorded for this dataset
► Site Characteristics
- No site characteristics recorded for this dataset