Fundamentals

Changes in canopy cover

The following images illustrate the detection of a change in canopy cover between August 2004 and August 2005 along the Daly River, Northern Territory, Australia.

Pan sharpened Quickbird image
Pan-sharpened QuickBird image showing parts of the Daly River, Northern Territory.
Percentage canopy cover map
Map of plant projective cover based on models developed using field and image derived information on canopy cover.
Percentage canopy cover change
Change map with yellow and red colours indicating a decrease in canopy cover and green colours indicator an increase in canopy cover between August 2004 and August 2005 along the Daly River.

Reference:

Johansen, K., Phinn, S., Lowry, J., and Douglas, D., 2008. Quantifying indicators of riparian condition in Australian tropical savannas: integrating high spatial resolution imagery and field survey data. International Journal of Remote Sensing. Vol. 29, No. 3, pp. 7003-7028.