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Product pages » Tree Structural Characteristics

Tree Structural Characteristics

Last modified by Bec Trevithick on 2017/01/10 16:15

Tree structural characteristics - site measurements, ancillary data and field photography - AusCover super sites

tree structure

Figure 1: Tree Structural Measurements

Link to the data

DescriptorData linkLayer name
Persistent URLhttp://www.auscover.org.au/purl/tree-structural-characteristics-all-sites
GeoNetwork recordNot Available Yet
Data Portal (in development)http://qld.auscover.org.au/public/html/field/index.html

Data licence and Access rights

ItemDetail
RightsCopyright 2010 - 2020 JRSRP. Rights owned by the JRSRP. Rights licensed subject to Creative Commons Attribution (CC BY 4.0).
LicenceCreative Commons Attribution 4.0 License, http://creativecommons.org/licenses/by/4.0.
AccessThese data can be freely downloaded and used subject to the CC BY licence. Attribution and citation is required as described at http://www.auscover.org.au/citation. We ask that you send us citations and copies of publications arising from work that use these data.

Abstract or Summary

Field data on tree structural characteristics can be used for the calibration and validation of LiDAR derived products of tree height, canopy height profiles and allometrically derived Diameter Breast Height (DBH).

Tree structural characteristics are collected at the centre of each star. The basal wedge is first used to identify a sample of trees then direct measurements are taken of each tree, which constitute the tree structural characteristics. See Field protocols: Tree structural characteristics

Spatial and Temporal extents

ItemDetail
Typical spatial resolution1 ha
Spatial coverage (degrees)110.000000 to 155.001329 E, -10.000000 to -45.000512 N
Temporal resolution1 day
Temporal coverage2011-mm-dd to ongoing
Sensor(s)Terrestrial laser scanner
ItemDetail
Spatial representation typevector
Spatial reference systemWGS 84

Point of contact

ItemDetail
NameRebecca Trevithick
OrganisationRemote Sensing Centre - Queensland Department of Science, Information Technology and Innovation (DSITI)
PositionSenior Scientist (Remote Sensing)
Emailrebecca.trevithick@qld.gov.au
RolepointOfContact
AddressRemote Sensing Centre, DSITI, EcoSciences Precinct
Telephone(07) 3170 5679

Credit

The following organisations contributed to the data collection:

  • Joint Remotes Sensing Research Project
  • Royal Melbourne Institute of Technology
  • Curtin University
  • University of Adelaide
  • CSIRO

Keywords

ThesauriKeyword
GCMDEARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER
CFvegetation_area_fraction
FoREnvironmental Sciences > Ecological Applications = 0501

There are three main thesauri that AusCover recommends:

  1. Global Change Master Directory (http://gcmd.nasa.gov)
  2. Climate and Forecast (CF) convention standard names (http://cfconventions.org/standard-names.html).
  3. Fields of Research codes (http://www.abs.gov.au/ausstats/abs@.nsf/0/6BB427AB9696C225CA2574180004463E?opendocument).

Data quality

Some site specific issues relating to data quality may exist. Please see the ancillary data shapefile or KMZ file for specific details. 

Validation status

This is a validation data set. No validation is intended for this data set.

Related products

ItemProduct link
SLATS star transectSLATS Star Transect Data
Leaf area index (LAI)Not Available Yet
Hemispherical photographyHemispherical Photography

References

ItemDetail or link
Online infoField data collection protocol: Tree structural characteristics

Sampling strategy

Tree structural characteristics are measured around a central point. 

Product version history

Version labelDetail
1.0Initial release

Shapefile/KMZ file attributes

Data FieldDescription (units)Format
supersiteAusCover calibration/validation siteText
obs_timeDate and time of observationDate Time Stamp
longitudeLongitude of tree location. Typically refers to plot centre, standard AusCover variable radius plots. Can refer to individual tree for full surveys, as in belt and fixed radius plots (decimal degrees)Float
latitudeLatitude of tree location. Typically refers to plot centre, standard AusCover variable radius plots. Can refer to individual tree for full surveys, as in belt and fixed radius plots (decimal degrees)Float
observersNames of field observersText
factorBasal area wedge factor used for tree selection for variable radius plotsFloat
transect_typeCategorical descriptor of sampling method – variable radius refers to standard AusCover protocol, belt or fixed radius refers to full surveysText
treeTree identifierInteger
live_deadCategorical data –live/deadText
dbh_30Diameter of trunk at 30 cm height from foot of tree (cm)Integer
no_stems_130Number of stems for trees with split trunks at breast heightInteger
dbh_130Geometric mean? Calculated as the total of all stems at breast height (cm)Integer
height_first_branchHeight from ground to lowest main branch, ignoring split trunk stems (m)Float
heightHeight of tree (m)Float
crown_xDiameter of major crown axis (m)Float
crown_yDiameter of axis perpendicular to major crown axis (m)Float
trunk??Float
barkCategorical descriptor of bark (smooth, rough, peeling)Text
speciesSpecies if knownText
photoPhoto name for THREDDS imageryText
obs_keyUnique identifier of site and visit for data management purposesText

Metadata history

DateDetail
2013-03-13Metadata creation date
Tags:
Created by Bec Trevithick on 2013/03/14 10:26

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