Forest Ecosystem Monitoring Cooperative

Federal Forest Inventory and Analysis Data for the Northeast: VT FIA Derived Structural Diversity

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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 Northeast. 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 northeastern forests.

People

  • Matthias Nevins: Content Provider

Organizations

  • United States Department of Agriculture (USDA), Forest Service : lead

Geographic Coverage

  • Coordinates

    Data Table

    • Title: VT FIA Derived Structural Diversity
    • Start Date: 1997-01-01
    • End Date: 2024-01-01
    • Description: Using the USFS Forest Inventory and Analysis Program population estimate data on Phase 2 plots accessed via the FIA Datamart1, we computed tree size class diversity using a Shannon-Weiner Diversity Index calculation (see equation below). The first available data year was 1997. We divided all sampled trees into 5 inch classes and tallied the total proportion of each size class measured in the plots. To compute the annual score, we used FIA’s plot evaluation group panels to create population estimates for each year. The target for this dataset was set as the maximum value plus 10% of the range. The target was set as the upper scoring bounds (dataset maximum plus 10% of the range), and the current year is scored for where it falls between the lower scoring bounds (dataset minimum minus 10% of the range) and the target, scaled to be between 1 and 5.

    • Purpose: Provide long term trend data for stand structural complexity on the Forest Indicators Dashboard

    • Condensed Title: Z1384_4052_LLWCK1

    • Object Name: VMC.1384.4052

    • Data Type: mySQL
    • Citation: Donisvitch, S (2025) VT FIA Derived Structural Diversity . FEMC. Available online at: https://www.uvm.edu/femc/data/archive/project/federal-forest-inventory-analysis-data-northeast/dataset/vt-fia-derived-structural-diversity

    • Online Distribution: https://vmc.w3.uvm.edu/vmcdevel/data/archive/project/federal-forest-inventory-analysis-data-northeast/dataset/vt-fia-derived-structural-diversity

    Attribute List

      Attribute Name: ClassCount1
      • Label: ClassCount1
      • Storage Type: decimal
      Attribute Name: ClassCount10
      • Label: ClassCount10
      • Storage Type: decimal
      Attribute Name: ClassCount11
      • Label: ClassCount11
      • Storage Type: decimal
      Attribute Name: ClassCount12
      • Label: ClassCount12
      • Storage Type: decimal
      Attribute Name: ClassCount13
      • Label: ClassCount13
      • Storage Type: decimal
      Attribute Name: ClassCount14
      • Label: ClassCount14
      • Storage Type: decimal
      Attribute Name: ClassCount2
      • Label: ClassCount2
      • Storage Type: decimal
      Attribute Name: ClassCount3
      • Label: ClassCount3
      • Storage Type: decimal
      Attribute Name: ClassCount4
      • Label: ClassCount4
      • Storage Type: decimal
      Attribute Name: ClassCount5
      • Label: ClassCount5
      • Storage Type: decimal
      Attribute Name: ClassCount6
      • Label: ClassCount6
      • Storage Type: decimal
      Attribute Name: ClassCount7
      • Label: ClassCount7
      • Storage Type: decimal
      Attribute Name: ClassCount8
      • Label: ClassCount8
      • Storage Type: decimal
      Attribute Name: ClassCount9
      • Label: ClassCount9
      • Storage Type: decimal
      Attribute Name: EVAL_GRP_DESCR
      • Label: EVAL_GRP_DESCR
      • Storage Type: text
      • Measurment Type: nominal
      Attribute Name: totalCount
      • Label: totalCount
      • Storage Type: decimal
      Attribute Name: Year
      • Label: Year
      • Storage Type: int

    Methods

    • No methods recorded for this dataset

    Sampling Equipment

    • No sampling equipment recorded for this dataset

    Site Characteristics

    • No site characteristics recorded for this dataset