Linking riparian vegetation spatial structure in Australian tropical savannahs to ecosystem health indicators:

semi-variogram analysis of high spatial resolution satellite imagery
K. Johansen and S. Phinn
Canadian Journal of Remote Sensing 32, 3, 1-16, 2006
The objective of this work was to determine if the structural attributes of savannah riparian zones in northern Australia can be detected from commercially available remotely sensed image data. Two QuickBird images and coincident field data covering sections of the Daly River and the South Alligator River- Barramundie Creek in the Northern Territory were used.

http://pubs.nrc-cnrc.gc.ca/cjrs/m06-020.html