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      4. Christmas Island Canopy Height Model (CHM) – 2011

      Christmas Island Canopy Height Model (CHM) – 2011

      A 2m by 2m canopy height model (CHM) grid developed from the 2011 aerial LiDAR survey of Christmas Island. As with the 2011 DEM, the CHM was provided to Geoscience Australia in 1km by 1km ESRI grid tiles, which were then joined together using ESRI ArcMap.

      Each grid cell (2m x 2m) contains the maximum vegetation height in metres. Canopy height was generated by subtracting the ground height from the first laser return classified as vegetation. As a guide, the data is vertically accurate to 15cm and horizontally accurate to 30cm. For a detailed description of the survey accuracy see the AAM Survey Report. The CHM grid file was provided in GDA94 MGA zone 48 and has been left in this projection.

      The CHM data can be used to find the average vegetation canopy height for defined areas. LiDAR vegetation heights, along with vegetation density values have been used in other organisations to create vegetation maps, estimate carbon content, characterise species habitats and assist in decision making.

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      Creative Commons Attribution 4.0

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      • open Christmas Island Canopy Height Model (CHM) – 2011 TIFF

        A 2m by 2m canopy height model (CHM) grid...

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      Tags
      • 2011 LiDAR Survey
      • Christmas
      • IOT
      • canopy
      • environment
      • height
      • height data
      • tree
      • vegetation
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      • australian-indian-ocean-territories-christmas-island

        Australian Indian Ocean Territories - Christmas Island

        The Australian Government, through the Department of Infrastructure, Regional...

        View Australian Indian Ocean Territories - Christmas Island
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      Activity Stream RDF JSON
      department-of-infrastructure-and-regional-development
      Key Information
      Published by
      Department of Infrastructure, Transport, Cities and Regional Development
      Information classification
      -
      Data theme
      Environment
      Data last updated
      14-06-2018
      Update frequency
      -
      Data custodian
      Geoscience
      Dataset contact
      Maintainer Not Specified
      Website
      -
      First published
      14-06-2018
      Metadata last updated
      25-05-2022
      Data source
      -
      Temporal coverage
      -
      Geospatial theme
      Plants and Animals
      Geospatial source projection
      GDA94 MGA zone 48
      Spatial coverage

      Dataset extent

      Base map and data from OpenStreetMap and OpenStreetMap Foundation
      Digital object identifier
      -
      Citation
      -
      Data usability rating How reusable and linked the data is. Learn more.

      Acknowledgement

      The Government of Western Australia respectfully acknowledges the traditional owners of country throughout Western Australia and pays its respects to Elders past, present and emerging.

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