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

Description

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.

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1797
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/above/NDVI_Forest_Structure/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ABOVE/guides/NDVI_Forest_Structure.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1797
25 NDVI, Species Cover, and LAI, Burned and Unburned sites, Interior Alaska, 2017-2018: survey_sites.kml https://data.ornldaac.earthdata.nasa.gov/public/above/NDVI_Forest_Structure/comp/survey_sites.kml
21 ABoVE project site https://above.nasa.gov
33 NDVI, Species Cover, and LAI, Burned and Unburned sites, Interior Alaska, 2017-2018: NDVI_Forest_Structure.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/NDVI_Forest_Structure/comp/NDVI_Forest_Structure.pdf
22 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 https://daac.ornl.gov/ABOVE/guides/NDVI_Forest_Structure_Fig1.jpg

Tags

  • ecosystems
  • biosphere
  • national-geospatial-data-asset
  • ngda
  • vegetation
  • earth-science

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