Cristin-resultat-ID: 904193
Sist endret: 24. november 2016 09:33
NVI-rapporteringsår: 2012
Resultat
Vitenskapelig artikkel
2012

Vegetation mapping of Svalbard utilising Landsat TM/ETM+ data

Bidragsytere:
  • Bernt Johansen
  • Stein Rune Karlsen og
  • Hans Tømmervik

Tidsskrift

Polar Record
ISSN 0032-2474
e-ISSN 1475-3057
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2012
Volum: 48
Hefte: 244
Sider: 47 - 63

Importkilder

Isi-ID: 000298543600008

Beskrivelse Beskrivelse

Tittel

Vegetation mapping of Svalbard utilising Landsat TM/ETM+ data

Sammendrag

The overall objective of this paper is to present and discuss the most recently developed vegetation map for Svalbard, Arctic Norway. The map is based on satellite images in which several Landsat TM/ETM+ images were processed through six operational stages involving: (1) automatic image classification, (2) spectral similarity analysis, (3) generation of classified image mosaics, (4) ancillary data analysis, (5) contextual correction, and (6) standardisation of the final map products. The developed map is differentiated into 18 map units interpreted from 37 spectral classes. Among the 18 units separated, six of the units comprise rivers, lakes and inland waters, glaciers, as well as non- to sparsely vegetated areas. The map unit 7 is a result of shadow effects and different types of distortions in the satellite image. The vegetation of the remaining eleven units varies from dense marshes and moss tundra communities to sparsely vegetated polar deserts and moist gravel snowbeds. The accuracy of the map is evaluated in areas were access to traditional maps have been available. The vegetation density and fertility is reflected in computed NDVI values. The map product is in digital format, which gives the opportunity to produce maps in different scales. A map sheet portraying the entire archipelago is one of the main products from this study, produced at a scale of 1:500,000.

Bidragsytere

Bernt Johansen

  • Tilknyttet:
    Forfatter
    ved NORCE Teknologi ved NORCE Norwegian Research Centre AS

Stein Rune Karlsen

  • Tilknyttet:
    Forfatter
    ved NORCE Teknologi ved NORCE Norwegian Research Centre AS

Hans Tømmervik

  • Tilknyttet:
    Forfatter
    ved NINA Tromsø ved Norsk institutt for naturforskning
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