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    • Pre-Delta-X: Aboveground Biomass and Vegetation Maps, Wax Lake Delta, LA, USA, 2016

    Metadata Updated: December 7, 2023

    This dataset includes aboveground biomass (AGB) and vegetation of herbaceous and forest wetland at 5.4 m resolution across the Wax Lake Delta (WLD) in Southern Louisiana, USA, within the Mississippi River Delta (MRD) floodplain. Vegetation classes were derived from Airborne Visible/Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) imagery acquired over the Atchafalaya Basin and the Terrebonne Basin in October 2016 in combination with a digital elevation model. The AVIRIS-NG surface reflectance data were also combined with L-band Uninhabited Airborne Vehicle Synthetic Aperture Radar (UAVSAR) HV backscatter and scattering component values from coincident vegetation sample sites to develop and test AGB models for emergent herbaceous and forested wetland vegetation. This study used the integrated airborne data from AVIRIS-NG and UAVSAR to assess the instruments' unique capabilities in combination for estimating AGB in coastal deltaic wetlands. The 5.4 m resolution vegetation classification map for the WLD study area was then used to apply the best models to estimate AGB across the WLD.

    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

    Estimated aboveground biomass (Mg/ha) map of herbaceous and forested wetland vegetation in the Wax Lake Delta. The gray area represents Nelumbo lutea, floating vegetation, and submerged aquatic vegetation where biomass was not estimated. Source: Jensen et al. (2019)

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2025126705-ORNL_CLOUD
    Data First Published 2021-04-03
    Language en-US
    Data Last Modified 2023-06-12
    Category Delta-X, 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 Jensen, D.J., M. Simard, R. Twilley, E. Castaneda, and A. McCall. 2021. Pre-Delta-X: Aboveground Biomass and Vegetation Maps, Wax Lake Delta, LA, USA, 2016. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1821
    Graphic Preview Description Estimated aboveground biomass (Mg/ha) map of herbaceous and forested wetland vegetation in the Wax Lake Delta. The gray area represents Nelumbo lutea, floating vegetation, and submerged aquatic vegetation where biomass was not estimated. Source: Jensen et al. (2019)
    Graphic Preview File https://daac.ornl.gov/DELTAX/guides/PreDeltaX_L3_AVIRIS_Biomass_Fig1.jpg
    Harvest Object Id 9966e9e2-cb1b-44c6-9e2c-58b640c66a7b
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1821
    Metadata Type geospatial
    Old Spatial -91.51 29.46 -91.37 29.55
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash a27e35b75373e6172f9a97405a6876c033c6dbd34c3a0e639922f7ef777d270f
    Source Schema Version 1.1
    Spatial
    Temporal 2016-10-17T00:00:00Z/2016-10-17T23:59:59Z

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