SuperSites Data Portal

Leaf Area Index Data, Calperum Mallee SuperSite, Core 1 ha, 2015

Citation

Meyer, W (): Leaf Area Index Data, Calperum Mallee SuperSite, Core 1 ha, 2015. TERN Australian SuperSite Network. http://supersites.tern.org.au/knb/metacat/supersite.682.5/html

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Identifier
docid
supersite.682.5
Data Creators
Individual
Wayne Meyer
Organization
University of Adelaide
Abstract

Leaf area index (LAI) can be defined as the total one sided area of leaf tissue per unit area of ground and is a key derived parameter that is associated with water and light interception, radiation transfer, water and carbon exchange. Canopy cover can be defined as the fraction of ground shaded by the vertical projection of tree crowns. These measures may be used as proxies for actual canopy leaf area. Leaf area index is the preferred measure of cover for vegetation and is a key variable used in total biomass estimation and in carbon cycling prediction models. Indirect measures of LAI include digital photographic methods using flat or hemispherical images, referred to respectively as Digital Cover Photography (DCP) and (Digital Hemispheric Photography (DHP). LAI measurements are carried out at each SuperSite using the most appropriate method for the vegetation type present. Digital Cover Photography (DCP) was carried out at the Calperum Mallee SuperSite Core 1 ha.

Contacts for Questions on the Use and Interpretation of Data
Individual
Wayne Meyer
Organization
University of Adelaide
Address
Earth and Environmental Sciences
Waite Campus
Glen Osmond. SA 5064
Australia
Phone
voice
08 8313 8110
Email Address
wayne.meyer@adelaide.edu.au
Methods and Sampling Information
Methods
Method Step 1
Description
LAI Image Collection

LAI image collection was carried out generally as described in SuperSites Vegetation Monitoring Protocols, Tern Australian SuperSite Network, http://dx.doi.org/10.4227/05/56134C1310F16

Method Step 2
Description
Image processing

Images were processed as described in Macfarlane et al., 2007. Estimation of leaf area index in eucalypt forest using digital photography. Agricultural and Forest Meteorology, 143: 176-188.

Keywords and Subject Categories
anzsrc-for
  • 0501
  • 0502
  • 0602
  • 0607
  • Leaf Area Index
  • LAI
  • foliage protection cover
  • crown cover
  • cover porosity
  • Calperum
Geographic Coverage
Geographic Description
Calperum Station, Calperum Mallee SuperSite
Bounding Coordinates
West
140.71225 degrees
 
East
140.71225 degrees
 
North
-34.041974 degrees
 
South
-34.041974 degrees
 
Temporal Coverage
Date
2015
Intellectual Rights, Licence and Usage Conditions

Creative Commons Attribution 4.0 International License

Data Table
asn_clpm_veg_lai_core_1_ha_20150119.csv
Name
asn_clpm_veg_lai_core_1_ha_20150119.csv
Description
Calperum LAI Data, January 2015
Attribute Information
date
Name
date
Definition
Date measurements were made
Measurement Type
dateTime
Measurement Domain
Format
dd month yyyy
transect_start_time
Name
transect_start_time
Definition
Start time of transect photography
Measurement Type
dateTime
Measurement Domain
Format
hh:mm
transect_end_time
Name
transect_end_time
Definition
End time of transect photography
Measurement Type
dateTime
Measurement Domain
Format
hh:mm
plot
Name
plot
Definition
Plot ID
Measurement Type
nominal
Measurement Domain
Text Domain
Definition
Plot ID
transect_no
Name
transect_no
Definition
Transect number
Measurement Type
nominal
Measurement Domain
Text Domain
Definition
transect id number
lai
Name
lai
Definition
Leaf Area Index
Measurement Type
interval
Measurement Domain
Standard Unit
number
Number Type
natural
comments
Name
comments
Definition
Comments
Measurement Type
nominal
Measurement Domain
Text Domain
Definition
comments
gT
Name
gT
Definition
Total number of pixels in gaps
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
gL
Name
gL
Definition
Total number of pixels in large gaps
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
ff
Name
ff
Definition
Fraction of foliage protective cover
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
fc
Name
fc
Definition
Fraction of crown cover
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
CP
Name
CP
Definition
Fraction of Crown Porosity
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
Number Of Records
124
Physical Structure Description
Object Name
asn_clpm_veg_lai_core_1_ha_20150119.csv
Size
6043 byte
Text Format
Number of Header Lines
1
Record Delimiter
#x0A
Attribute Orientation
column
Simple Delimited
Field Delimiter
,
Distribution
Online
URL
supersite.683.1
Access
Access Control
Auth System
knb
Order
allowFirst
Allow:
PermissionPrincipal
[read] cn=allusers,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=supersite,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=meyer,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=koerber,o=unaffiliated,dc=ecoinformatics,dc=org
asn_clpm_veg_lai_core_1_ha_20150616.csv
Name
asn_clpm_veg_lai_core_1_ha_20150616.csv
Description
Calperum LAI Data, June 2015
Attribute Information
date
Name
date
Definition
Date measurements were made
Measurement Type
dateTime
Measurement Domain
Format
dd month yyyy
transect_start_time
Name
transect_start_time
Definition
Start time of transect photography
Measurement Type
dateTime
Measurement Domain
Format
hh:mm
transect_end_time
Name
transect_end_time
Definition
End time of transect photography
Measurement Type
dateTime
Measurement Domain
Format
hh:mm
plot
Name
plot
Definition
Plot ID
Measurement Type
nominal
Measurement Domain
Text Domain
Definition
Plot ID
transect_no
Name
transect_no
Definition
Transect number
Measurement Type
nominal
Measurement Domain
Text Domain
Definition
Transect
lai
Name
lai
Definition
LAI
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
comments
Name
comments
Definition
Comments
Measurement Type
nominal
Measurement Domain
Text Domain
Definition
comments
gT
Name
gT
Definition
gT
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
gL
Name
gL
Definition
gL
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
ff
Name
ff
Definition
ff
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
fc
Name
fc
Definition
Fraction of crown cover
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
CP
Name
CP
Definition
Crown porosity
Measurement Type
ratio
Measurement Domain
Standard Unit
number
Number Type
natural
Number Of Records
119
Physical Structure Description
Object Name
asn_clpm_veg_lai_core_1_ha_20150616.csv
Size
4731 byte
Text Format
Number of Header Lines
1
Record Delimiter
#x0A
Attribute Orientation
column
Simple Delimited
Field Delimiter
,
Distribution
Online
URL
supersite.684.1
Access
Access Control
Auth System
knb
Order
allowFirst
Allow:
PermissionPrincipal
[read] cn=allusers,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=supersite,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=meyer,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=koerber,o=unaffiliated,dc=ecoinformatics,dc=org
Access
Access Control
Auth System
knb
Order
allowFirst
Allow:
PermissionPrincipal
[read] public
[all] uid=supersite,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=koerber,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=meyer,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=karan,o=unaffiliated,dc=ecoinformatics,dc=org