Remote sensing of soils in the Eastern Palouse region with landsat thematic mapper
1989; Elsevier BV; Volume: 28; Linguagem: Inglês
10.1016/0034-4257(89)90123-5
ISSN1879-0704
Autores Tópico(s)Remote Sensing in Agriculture
ResumoSoils of the Palouse region of eastern Washington State were investigated using Landsat Thematic Mapper (TM) band ratios to discriminate areas where erosion has caused paleosols to be exposed. Ratioed data were clustered and plotted to show soil lines which could be subdivided into various levels of organic matter and iron oxides. Successfully classified scenes of a summer fallow (bare soil) field were obtained with band ratios 14, 34and54 to map organic carbon and 34, 54, and53 for the iron/carbon ratio indicator of erosion. Regression models were made with 54 data and organic carbon and 53 data and the iron/carbon ratio. Based on this analysis, 21% of the test field soils are exposed or nearly exposed paleosols.
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