Interpretation; Apollo 9 photography of parts of southern Arizona and southern New Mexico
Examination of small-scale (approximately 1:650,000) multispectral photographs obtained on the Apollo 9 mission in March 1969 revealed that in semiarid, regions features due to differences in soils or quantity of vegetation could most easily be discriminated on the color infrared photographs. Where there is sufficient ground truth, it is possible to delineate regional wildland plant communities on the basis of tone, however, the precision of the method may be improved by using photographs obtained two or more times during the year. Sites where vegetation-improvement practices have been completed are not always discernible. For example, where waterspreaders have been constructed, there was sufficient change in the density of vegetation to be readily detected on the photographs; however, pinyon-juniper to grass, conversions or contour furrowing did not always produce a sufficient change in the vegetation to be detected on the photographs.
Citation Information
Publication Year | 1973 |
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Title | Interpretation; Apollo 9 photography of parts of southern Arizona and southern New Mexico |
DOI | 10.3133/ofr73215 |
Authors | J. Robert Owen, Lynn M. Shown |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Open-File Report |
Series Number | 73-215 |
Index ID | ofr73215 |
Record Source | USGS Publications Warehouse |