Characteristic variations in reflectance in surface soils

Journal Article · Sun Nov 01 04:00:00 EST 1981 · Soil Sci. Soc. Am. J.; (United States)

DOI:https://doi.org/10.2136/sssaj1981.03615995004500060031x· OSTI ID:5620011

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 of 485 soil samples from the U.S. and Brazil representing 30 suborders of the 10 orders of Soil Taxonomy was examined. Spectral bidirectional reflectance factor was measured on uniformly moist soils over the 0.52 to 2.32 ..mu..m 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 genetically 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 classificatin, genesis, and survey.

• Research Organization: Purdue Univ., West Lafayette, IN
• OSTI ID: 5620011
• Journal Information: Soil Sci. Soc. Am. J.; (United States), Journal Name: Soil Sci. Soc. Am. J.; (United States) Vol. 45:6; ISSN SSSJD
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
BIOLOGY
BRAZIL
DEVELOPING COUNTRIES
INFRARED SPECTROMETERS
LATIN AMERICA
MEASURING INSTRUMENTS
NORTH AMERICA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
REMOTE SENSING
SOILS
SOUTH AMERICA
SPECTRAL REFLECTANCE
SPECTROMETERS
TAXONOMY
USA
VARIATIONS