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    • Post-fire Recovery of Soil Organic Layer Carbon in Canadian Boreal Forests, 2015-2018

    Metadata Updated: February 12, 2024

    This dataset provides site moisture, soil organic layer thickness, soil organic carbon, nonvascular plant functional group, stand dominance, ecozone, time-after-fire, jack pine proportion, and deciduous proportion for 511 forested plots spanning ~140,000 km2 across two ecozones of the Northwest Territories, Canada (NWT). The plots were established during 2015-2018 across 41 wildfire scars and unburned areas (no burn history prior to 1965), with 317 plots in the Plains and 194 plots in the Shield regions. At each plot, two adjacent 30-m transects were established 2 m apart, running north from the plot origin. Soil organic layer (SOL) depth (cm) was measured every 3 m and the mean was taken from the 10 measurements to calculate a plot-level SOL thickness. Three soil organic layer profiles were destructively sampled at 0, 12, and 24 m using a corer that was custom designed for NWT soils. Within the transects, all stems taller than 1.37 m were identified to species to calculate tree density (stems / m2). Nonvascular plant percent cover was identified to functional group at five, 1-m2 quadrats spaced 6 m apart along the belt transect. A subset of 2,067 of 5,137 total increments from 1,803 profiles from 421 plots were analyzed for total percent C using a CHN analyzer. Time-after-fire was established using fire history records. For older plots where no known fire history is recorded, tree age was used. Data are for the period 2015-06-11 to 2018-08-24 and are provided in comma-separated values (CSV) format.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date February 12, 2024
    Metadata Updated Date February 12, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Locations of plots (n =511) in the Northwest Territories, Canada where soil organic layer thickness and total carbon stocks were measured. Plots were sampled along a chronosequence of time-after-fire, stratified by ecozone, and constrained by accessibility. Fire history from 1965-2014 was determined from the fire year associated with mapped fire scars (NWT Centre for Geomatics, 2012). For plots not within any recorded fire, time-after-fire was determined by tree ring analysis.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date February 12, 2024
    Metadata Updated Date February 12, 2024
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2854211353-ORNL_CLOUD
    Data First Published 2024-02-01
    Language en-US
    Data Last Modified 2024-02-06
    Category ABoVE, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Bill, K.E., C. Dieleman, J.L. Baltzer, G.E. Degre-timmons, M.C. Mack, S.G. Cumming, X.J. Walker, and M.R. Turetsky. 2023. Post-fire Recovery of Soil Organic Layer Carbon in Canadian Boreal Forests, 2015-2018. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2235
    Graphic Preview Description Locations of plots (n =511) in the Northwest Territories, Canada where soil organic layer thickness and total carbon stocks were measured. Plots were sampled along a chronosequence of time-after-fire, stratified by ecozone, and constrained by accessibility. Fire history from 1965-2014 was determined from the fire year associated with mapped fire scars (NWT Centre for Geomatics, 2012). For plots not within any recorded fire, time-after-fire was determined by tree ring analysis.
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/Post_Fire_SOC_NWT_Fig1.png
    Harvest Object Id cda16733-a6ea-4579-a537-7cce1b9eb960
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2235
    Metadata Type geospatial
    Old Spatial -132.67 59.79 -104.19 68.33
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 9178b8eca01a5ce402d77ae5c8e7f5c2d038c089e37a6f91f313e6e7d6949236
    Source Schema Version 1.1
    Spatial
    Temporal 2015-06-11T00:00:00Z/2018-08-24T23:59:59Z

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