2004 UC Proceedings Abstract
 Soil Landscape Models for Soil Survey Sampling Track: Modeling Author(s): David Howell, Yoon Kim, Carrie-Ann Haydu-Houdeshell, Pam Clemmer, Russell Almaraz Models estimating the distribution of soil properties were developed from soil profile descriptions and GIS landscape analysis to assist soil scientists with soil-landscape information prior to the completion of field soil investigations. Soil profiles and landscape features were described at 97 randomly located field sites within a 30,424 ha project area in the Mojave Desert. Explanatory variable information was also developed for each of these sites through GIS extraction from digital elevation model data, landform derivatives, band-ratio satellite images, and geomorphologic data. The models estimated selected soil characteristics continuously in a 30 m raster over the project area. The response variables that we modeled were soil genetic features that are used as diagnostic properties in Soil Taxonomy (e.g., presence or absence of argillic horizon). David Howell USDA Natural Resources Conservation Service 1125 16th Street, Room 219 Arcata , CA 95521 US Phone: 707-822-7133 E-mail: david.howell@ca.usda.gov Yoon Kim Humboldt State University Mathematics 1 Harpst Street Arcata , CA 95521 US Phone: 707-826-5399 E-mail: ygk1@humboldt.edu Carrie-Ann Haydu-Houdeshell USDA Natural Resources Conservation Service 17330 Bear Valley Rd., Suite 106 Victorville , CA 92392 US Phone: (760) 843-6882 E-mail: Carrie-Ann.Houdeshell@ca.usda.gov Pam Clemmer USDI Bureau of Land Management National Science and Technology Center Bldg. 50 Main Street Denver Federal Center Denver , CO 80225 US Phone: 303.236.0824 Fax: 303.236.3508 E-mail: Pam_Clemmer@blm.gov Russell Almaraz USDA Natural Resources Conservation Service 44811 N. Date Avenue, Suite G Lancaster 93534 US Phone: 661-945-2604 E-mail: russell.almaraz@ca.usda.gov |
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