ABoVE: Modeled Top Cover by Plant Functional Type over Alaska and Yukon, 1985-2020

Description

This dataset contains data files of modeled top cover estimates by plant functional type (PFT) for the Arctic and Boreal Alaska and Yukon regions. Estimates are presented for single years at 5-year intervals from 1985 to 2020. Also included are root mean square error (RMSE) and source year, which indicate the specific year from which pixels in the top cover maps were derived. Plant functional types include conifer trees, broadleaf trees, deciduous shrubs, evergreen shrubs, graminoids, forbs, and light macrolichens. Estimates were derived through the combination of two stochastic gradient-boosting models that used environmental and spectral covariates. Environmental covariates represented topographic, climatic, permafrost, hydrographic, and phenological gradients, and spectral covariates were based on Landsat Thematic Mapper (TM), Enhanced Thematic Mapper Plus (ETM+), and Operational Land Imager (OLI) data collected between 1984-2020. These maps catalog widespread changes in the distribution of PFTs occurring in the Arctic and boreal forest ecosystems, such as tundra shrub expansion, due to the intensification of disturbances such as fire and climate-driven vegetation dynamics.

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%2F2032
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/above/AK_Yukon_PFT_TopCover/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ABOVE/guides/AK_Yukon_PFT_TopCover.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/2032
33 ABoVE: Modeled Top Cover by Plant Functional Type over Alaska and Yukon, 1985-2020: AK_Yukon_PFT_TopCover.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/AK_Yukon_PFT_TopCover/comp/AK_Yukon_PFT_TopCover.pdf
21 ABoVE project site https://above.nasa.gov
22 Map of deciduous shrub top cover over the study region in 2020. https://daac.ornl.gov/ABOVE/guides/AK_Yukon_PFT_TopCover_Fig1.jpg

Tags

  • ecosystems
  • biosphere
  • vegetation
  • earth-science

Topics

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