http://earthobservatory.nasa.gov/Study/Mojave/
QUOTE
What do you do when a fragile desert ecosystem turns into a recreational playground? Leonard Gaydos, Coordinator for the U.S. Geological Survey's (USGS) Recoverability and Vulnerability of Desert Ecosystems project, and colleagues are using satellite data to develop tools that will help Mojave Desert land managers decide what recreational activities to allow and where to allow them. Specifically, the research team is studying vulnerability and recoverability of desert lands.
More at link above.
Looks like another tool for land managers to use in their quest to ban OHVs from the desert.