Woody weeds are native shrubs which grow to high densities in rangelands and compete with grasses, consequently reducing the availability of fodder, lowering grazing capacity and ultimately reducing the productivity of rangelands. The problem is being monitored using satellite imagery which maps the extent, density and change in woody cover over time. Landsat imagery is acquired for two dates for each area. A computer classification produces woody vegetation cover images which are ground- truthed. Both dates are then combined in a geographic information system (GIS) to produce a change map showing increases and decreases in woody cover. Field days are arranged with landholders to distribute maps and discuss management strategies. A positive response from landholders and government agencies indicates the planning and management potential of the woody cover data.
September 24-27, 1996
Port Augusta, South Australia
ISSN 1323-6660
Full-text publications from the Australian Rangelands Society (ARS) Biennial Conference Proceedings (1997-), Rangeland Journal (ARS/CSIRO; 1976-), plus videos and other resources about the rangelands of Australia.