Comparison of satellite imagery and infrared aerial photography as vegetation mapping methods in an Arctic study area; Jameson Land, East Greenland

[摘要] The two methods suited for mapping the vegetation of remote inaccessible terrain were compared in terms of their ability to reproduce and distinguish predefined vegetation classes, the appropriateness of their different spatial resolutions to the same end, and their cost-effectiveness. The study was carried out in Jameson Land, East Greenland (70° 30?N to 72°N). The vegetation had previously been classified and mapped by the use of false colour infrared aerial photos in the period 1982–86. The resultant vegetation maps had been drawn on aerial photo overlays at a scale of 1:25, 000.SPOT data from 8 September 1986 and Landsat TM data from 10 August 1987 were used. A supervised classification of the combined satellite data was made using a maximum likelihood algorithm. A vegetation map was produced which accurately plotted 9 of the dominant vegetation classes and 4 non-vegetation classes. The two mapping methods were then compared. The satellite-based method was found to be inadequate for the ...

[学科分类] 自然科学（综合）