The accuracy and relative efficiency of Landsat data and orthophotos for determining area and volume of spruce.

Authors

  • D.A. Stellingwerf
  • S. Lwin

DOI:

https://doi.org/10.18174/njas.v33i2.16860

Abstract

Comparative estimates were made for a 12 841-ha area of Upper Austria comprising areas of pure or mixed Norway spruce and beech, young stands and non-forest. The Landsat data, classified by principal components analysis, gave very inaccurate differentiation of species, age classes and smaller non-forest areas, although the total forest area was reasonably accurate. Stand vol. of spruce was estimated by 2-stage sampling of both data sets followed by field work on sample plots. The Landsat method required 53% more primary (first-stage sampling) units, 23% more man-days and higher extra costs than the orthophoto method for the same accuracy. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Published

1985-05-01

Issue

Vol. 33 No. 2 (1985)

Section

Papers

License

© Copyright KLV All rights reserved. The copyright covers the exclusive right to reproduce and distribute the contribution, including reprints, translations, photographic reproductions, microform, electronic form (offline, online), or any other reproductions of similar nature. The Author may publish his/her contribution on his/her personal Web page provided that he/she creates a link to http://library.wur.nl/ojs/index.php/njas and that together with this electronic version it is clearly pointed out, by prominently adding "© KLV", that the copyright for this contribution is held by KLV. The full-text version may be available from the Author's Web page only after a delay of 12 months following the publication of the paper, whereas such a delay is not required for the abstract.