Landscape drainage modelling to enhance Landsat classification accuracies

Autor:	K. O. Niemann
Rok vydání:	1991
Předmět:	Geography Topographic relief Geography Planning and Development Taiga Multispectral image Elevation Vegetation Drainage Topographic map Digital elevation model Water Science and Technology Remote sensing
Zdroj:	Geocarto International. 6:13-30
ISSN:	1752-0762 1010-6049
DOI:	10.1080/10106049109354289
Popis:	Studies integrating digital elevation models (DEMs) with multispectral digital satellite data have typically concentrated on geographic areas characterized by moderate to high topographic relief. Variables such as elevation, slope gradient and aspect contribute most significantly to the zonation of vegetation in these environments. In areas where relief is low, vegetation zonation is based not on individual form elements but rather on physical processes. The purpose of this research was to investigate the potential of integrating multispectral and ancillary process data in such a low relief environment. For this a study area was chosen in the Boreal forest of west central Alberta where the zonation of vegetation is based, to a large extent, on landscape drainage. An initial classification of forest cover based on Landsat multispectral data yielded overall classification accuracies of 58%. A DEM was developed from a digitized 1:50,000 topographic map sheet. The differential geometry of the DEM was...
Databáze:	OpenAIRE
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