ECOSAT

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ECOSAT

• A New Generation of Eco-landscape Descriptors
  Derived From Satellite Imagery
• Dymond, Shepherd Ausseil

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Introducing ECOSAT

• Landscape and ecosystem descriptors
• High resolution 15m pixels
• Regional and national coverage
• Satellite based

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The WAK model
 
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Digital Elevation Model - DEM
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TM Image
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TM Image Flattened
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TM Image
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TM Image Flattened
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Vegetation Woody or Not
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Riparian Vegetation
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Basic Land Cover
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Forest Composition
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Forest Composition
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Ecosat forests
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Ecosat forests
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EcoSat Applications

• Wetland Mapping and Prioritisation
• Erosion Risk February Storm
• High Country Condition
• Lowland Possum Habitat Spatial TB Model
• Indigenous Forest Possum Density

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Wetland mapping
ETM satellite image
Ancillary data
GPS location
Flattening spectral rules
Region growing
Estuarine
Lacustrine
Riverine
Palustrine
Marine
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Map results
Satellite image
Wetland map
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Land pressure analysis
Total catchment area 440 ha
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Riparian analysis
Total riparian area 194 ha
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Estimating biodiversity value
Criteria
Ranking Weighted sum
Representativeness V1
4
å

V
w
V
Areal extent V2
i
i

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Surrounding naturalness V3
Terrestrial V4a
Connectivity V4
Aquatic V4b
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Estimating the value of representativeness

• Data input
• Environmental Domain
• (LENZ level III) A
• Current area a
• Historical area Ha

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R

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H
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R
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ErosionRisk
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High Country Condition
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Living Vegetation (r2 0.76)
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Bare Ground (r2 0.64)
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Possum TB Model
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ECOSAT in Summary

• Landscape and ecosystem descriptors
• High resolution 15m pixels
• Regional and National coverage
• Satellite based
• http//www.landcareresearch.co.nz/services/ecosat