INDEX | NEXT | PREVIOUS

24.  DETECTION OF LEAFY SPURGE INFESTATIONS THROUGH IMAGING SPECTROSCOPY USING THE COMPACT AIRBORNE SPECTROGRAPHIC IMAGER

Ralph Root1, Ray Kokaly2, Karl Brown3, Gerry Anderson4, and Steve Hager5

Abstract: Leafy spurge (Euphorbia esula) is one of the most aggressive and hard-to-control invasive plant pests in the upper Midwestern United States, from the Mississippi River to the Northern Rocky Mountains. TEAM (The Ecological Area-wide Management) Leafy Spurge (http://www.team.ars.usda.gov/), sponsored by the U. S. Department of Agriculture Agricultural Research Service, is evaluating the capabilities of numerous remote-sensing platforms for the regional mapping of leafy spurge. As part of a larger study, Compact Airborne Spectrographic Imager CASI-II data were collected over a part of the South Unit of the Theodore Roosevelt National Park and neighboring U.S. Forest Service National Grasslands; the purpose is to test the effectiveness of low-altitude hyperspectral data with approximately 5 m spatial resolution for detecting and mapping leafy spurge. Preliminary results were compared to ground surveys and previous leafy spurge maps generated through the manual interpretation of 1:24,000-scale aerial photographs. This study can help in describing future strategies for further applications of CASI in mapping leafy spurge on a region wide basis.
 


1Ralph Root, USGS Rocky Mountain Mapping Center, Denver, CO. 2Ray Kokaly, USGS Spectroscopy Laboratory, Denver, CO. 3Karl Brown, USGS Center for Biological Informatics, Denver, CO. 4Gerry Anderson, USDA Agricultural Research Service, Sidney, MT. 5Steve Hager, National Park Service, Theodore Roosevelt National Park, Medora, ND.

INDEX | NEXT | PREVIOUS