Characteristic variations in reflectance of surface soils

Stoner, E. R.; Baumgardner, M. F.

Surface soil samples from a wide range of naturally occurring soils were obtained for the purpose of studying the characteristic variations in soil reflectance as these variations relate to other soil properties and soil classification. A total 485 soil samples from the U.S. and Brazil representing 30 suborders of the 10 orders of 'Soil Taxonomy' was examined. The spectral bidirectional reflectance factor was measured on uniformly moist soils over the 0.52 to 2.32 micron wavelength range with a spectroradiometer adapted for indoor use. Five distinct soil spectral reflectance curve forms were identified according to curve shape, the presence or absence of absorption bands, and the predominance of soil organic matter and iron oxide composition. These curve forms were further characterized according to generically homogeneous soil properties in a manner similar to the subdivisions at the suborder level of 'Soil Taxonomy'. Results indicate that spectroradiometric measurements of soil spectral bidirectional reflectance factor can be used to characterize soil reflectance in terms that are meaningful to soil classification, genesis, and survey.

Document ID

19820024942

Acquisition Source

Legacy CDMS

Document Type

Reprint (Version printed in journal)

Authors

Date Acquired

September 4, 2013

Publication Date

May 1, 1982

Subject Category

Report/Patent Number

Accession Number

82N32818

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Distribution Limits

Public

Work of the US Gov. Public Use Permitted.

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