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Bosque (Valdivia)

versión On-line ISSN 0717-9200

Resumen

SEGURA M, REINALDO  y  TRINCADO, GUILLERMO. Digital cartography of the National Reserve in Valdivia based on Landsat TM images. Bosque (Valdivia) [online]. 2003, vol.24, n.2, pp. 43-52. ISSN 0717-9200.  http://dx.doi.org/10.4067/S0717-92002003000200005.

The objective of this study was to develop and evaluate a digital classification methodology for producing thematic cartography for the National Reserve in Valdivia using multispectral Landsat TM images. A supervised classification method with a maximum likelihood decision rule was selected for processing the satellite data. The proposed methodology permitted a separation of five different types of land uses, which corresponded to old native forest, secondary growth forest, plantation, shrub and grassland. Overall, the classification accuracy was about 64%, and the accuracy for the different forest types was about 77%. The results obtained can be considered acceptable, and are promising for the preliminary mapping of areas covered with native forests.

Palabras clave : Landsat TM; supervised classification; remote sensing; Landsat TM.

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