Landcare Research - Manaaki Whenua

Landcare-Research -Manaaki Whenua

Specifications

Pan sharpened ortho-rectified imagery

Sensor ETM+
Satellite Landsat 7
Spectral bands blue (.45–.52 μm)
  green (.52–.60 μm)
  red (.63–.69 μm)
  near infrared (.76–.90 μm)
  first short-wave infrared (1.55–1.75 μm)
  second short-wave infrared (2.08–2.35 μm)
Pixelsize 15m
File description Imagine format, 8 bits per pixel (x 6 bands)
Equivalent scale 1:50000
Geo-registration accuracy 10m
Date range September 1999 - February 2003

Standardised reflectance imagery

Sensor ETM+
Satellite Landsat 7
Spectral bands blue (.45–.52μm)
green (.52–.60 μm)
red (.63–.69 μm)
near infrared (.76–.90 μm)
first short-wave infrared (1.55–1.75 μm)
second short-wave infrared (2.08–2.35 μm)
Pixel size 15m
File description Imagine format, 32 bits per pixel (x 6 bands)
Equivalent scale 1:50000
Geo-registration accuracy 10m
Date range September 1999 - February 2003
Comments Topographically flattened. Standardised to sun elevation of 50 degrees.

Woody layer

Sensor ETM+
Satellite Landsat 7
Classes woody vegetation
herbaceous vegetation
water
bare ground
snow
cloud
Pixel size 15m
File description Imagine format, 8 bits per pixel
Equivalent scale 1:50000
Geo-registrationaccuracy 10m
Overall classification accuracy 95%
Date range September 1999 - February 2003

Basic land cover

Sensor ETM+
Satellite Landsat 7
Classes water
bare ground
indigenous forest
herbaceous vegetation
cloud
sea
narrow-leaved scrub
planted conifer forest
mangroves
unspecified woody vegetation
urban bare ground
tussock grassland
Pixelsize 15m
File description Imagine format, 8 bits per pixel
Equivalentscale 1:50,000
Overall classification accuracy 95%
Geo-registrationaccuracy 10m
Daterange September 1999 - February 2003
Comments This product is a true land cover map and takes no account of land use. For example, if a woodlot in the middle of a production forest has just been cleared, it is mapped as bare ground rather than planted forest.

Indigenous  forest classes

Sensor ETM+
Satellite Landsat 7
Classes Podocarp-broadleaved forest
Beech forest
Broadleaved forest
Podocarp-broadleaved-beech forest
Beech-broadleaved forest
Podocarp forest
Kauri forest
Coastal forest
Subalpine shrubland
Pixel size 15 m
File description Imagine format, 8 bits per pixel
Equivalent scale 1:50,000
Overall classification accuracy Unknown
Geo-registration accuracy 10 m
Date range September 1999 – February 2003
Algorithm Evidential reasoning combining EcoSat standardised reflectance, EcoSat woody layer, and NZLRI

15 m DEM

Data source 20 m digital contoursand spot heights (NZMS260), NIWA digital stream network
Interpolation algorithm Arc/Info Topogrid with drainage enforcement on.
Pixel size 15 m
File description Imagine format,32 bit per pixel
Comments This DEM has been optimised for slope to produce accurate standardised reflectance. It is hydrologically consistent with the NIWA digital stream network. It is useful for automatically producing catchment boundaries on flat areas. For national applications it is more convenient to use the LandcareResearch 25-m DEM.