Forest Ecosystem Monitoring Cooperative

Forest Condition Change in Northern Vermont: Potential causes and implications for landscape-scale analysis: BAI Lost Years Removed

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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

    The purpose of this research was to study the relationship between radial tree growth (tree-rings) and vegetation indices derived from Landsat 5 TM imagery in northeastern forests. The following questions were investigated: 1. Is there a relationship between measurements of basal area increment and vegetation indices derived from Landsat 5 TM data the same year 1984-2010? 2. If these relationships exist, are they stronger for certain vegetation indices, species types, or particular locations? 3. Is there some combination of multiple vegetation indices that can be used to model BAI across the landscape?

People

  • Jennifer Pontius: Content Provider

  • Aiko Weverka: Principal Investigator

  • Dylan Harry: Content Provider

Geographic Coverage

  • Coordinates

    Data Table

    • Title: BAI Lost Years Removed
    • Start Date: 1700-01-01
    • End Date: 2010-12-31
    • Description: Cores with measurement problems removed

    • Purpose: Generate a database of radial tree growth (tree-rings) including historic data

    • Condensed Title: Z0238_BAI_Lost_Years_Removed

    • Object Name: VMC.238.409

    • Data Type: mySQL
    • Citation: Aiko Weverka. 2010. BAI Lost Years Removed. University of Vermont. FEMC. Can be found at: https://www.uvm.edu/femc/data/archive/project/forest-condition-change-northern-vermont-potential/dataset/bai-lost-years-removed

    • Online Distribution: https://www.uvm.edu/femc/data/archive/project/forest-condition-change-northern-vermont-potential/dataset/bai-lost-years-removed

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      • Description: Diameter at breast height
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      • Label: 1703
      • Description: 1703
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      • Label: 1702
      • Description: 1702
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      • Label: 1701
      • Description: 1701
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    Methods

    • Current Methods
      • Core collection and processing
        • Method Description: At each study site two xylem increment cores were collected at ~180ยบ from 4-20 co-dominant trees present within a ~15-30m radius of plot center. Cores were dried, mounted and sanded, according to standard procedures, measured, and visually cross dated using the list method. This data was used to create the BAI. Annual vegetation indices were compared with the BAI using Landsat technology.


    Sampling Equipment

    • Current Equipment
      • Imagery from sensor
        • Sampling Description: Imagery from the Landsat 5 Thematic Mapper (TM) sensor

      • Software
        • Sampling Description: J2X software

      • Velmex sliding stage
        • Sampling Description: Velmex sliding stage

    Site Characteristics

    • Site Description: In order to capture forest growth rates across a range of species, decline condition and land use histories, we used data from 47 plots throughout northern Vermont and New Hampshire. Falling across a broad elevational gradient (96 m-1155 m above sea level), plots were dominated by red spruce (Picea rubens), balsam fir (Abies balsamea), paper birch (Betula papyrifera), yellow birch (Betula alleghensis), red maple (Acer rubrum), sugar maple (Acer saccharum), American beech (Fagus grandifolia),