Mapping disrupted surfaces in the Mojave Desert using remote sensing and GIS, Fort Irwin, National Training Center, California.

详细信息   

• 作者：Johnson ; Patrick David.
• 学历：Master
• 年：1999
• 毕业院校：California State University
• 专业：Physical Geography.;Environmental Sciences.;Geography.;Remote Sensing.
• ISBN：0599990961
• CBH：1401961
• Country：USA
• 语种：English
• FileSize：2427065
• Pages：72

文摘

The purpose of this study was to develop a technique to identify and map surface disruption caused by mechanized training activities within Fort Irwin, National Training Center utilizing satellite remote sensing and geographic information systems. The technique involves processing spatially enhanced, visible imagery and digital elevation data to classify disruption levels. Prior to the classification, alluvium color thresholds are determined to isolate the separate ranges of disruption levels for each alluvial hue.;Three detailed study sites were selected to illustrate the different patterns and dynamics of disrupted surfaces. Furthermore, a tool that incorporates stacking layers of categorized, temporal disruption data into composites for quick assessment of disruption is introduced that could provide land managers of arid ecosystems a quick and convenient method to monitor changes of land surface disruption over time.