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    • NDVI, Species Cover, and LAI, Burned and Unburned sites, Interior Alaska, 2017-2018

    Metadata Updated: December 7, 2023

    This dataset provides leaf area index (LAI), tree species and canopy cover, normalized difference vegetation index (NDVI), and NDVI trends for boreal forests in interior Alaska, U.S. These data were collected to investigate NDVI trends with forest structure and composition as influenced by disturbance and succession. The data are from 102 sites surveyed in 2017 and 2018 and include locations with and without a fire since 1940. A time series of NDVI was developed from Landsat (1999-2018) to measure NDVI trends. The field data cover the period 2017-08-29 to 2018-08-20. The surveyed forest stands spanned a distance of over 425 km across interior Alaska. The sites were selected before visiting the field to include locations with and without a fire since 1940. Recently burned sites were selected to span a range of years since fire, while sites without a recent fire were selected to include a range of Landsat NDVI trends. For each year, the median NDVI during the growing season was calculated. Then, a simple linear regression trend was calculated for years 1999-2018.

    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 December 1, 2022
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Locations of boreal forest stands in interior Alaska where forest structure and composition were measured and compared to remotely-sensed NDVI trends (Fiore et al., 2020). The locations are available as a companion file. Source: Google Earth

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2162189202-ORNL_CLOUD
    Data First Published 2021-10-28
    Language en-US
    Data Last Modified 2023-06-12
    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 Fiore, N., S. Pedron, M. Tayo, C.I. Czimczik, and M.L. Goulden. 2021. NDVI, Species Cover, and LAI, Burned and Unburned sites, Interior Alaska, 2017-2018. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1797
    Graphic Preview Description Locations of boreal forest stands in interior Alaska where forest structure and composition were measured and compared to remotely-sensed NDVI trends (Fiore et al., 2020). The locations are available as a companion file. Source: Google Earth
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/NDVI_Forest_Structure_Fig1.jpg
    Harvest Object Id f71004b7-57e1-4a50-8bbf-25966129563e
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1797
    Metadata Type geospatial
    Old Spatial -149.96 63.82 -144.96 65.96
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 20c567e2c610aaba90df85f87703c0b1062d8fc9af42be16bcf1c118c12adc8d
    Source Schema Version 1.1
    Spatial
    Temporal 2017-08-29T00:00:00Z/2018-08-20T23:59:59Z

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