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This article in SSSAJ

  1. Vol. 40 No. 3, p. 405-409
     
    Received: Nov 19, 1975
    Accepted: Feb 18, 1976


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doi:10.2136/sssaj1976.03615995004000030028x

High-altitude Photography in the Development of a Generalized Soil Map1

  1. R. H. Rust,
  2. H. R. Finney,
  3. L. D. Hanson and
  4. H. E. Wright2

Abstract

Abstract

State-wide panchromatic photography of Minnesota was obtained at a contact scale of 1:90,000 and used for compiling a series of generalized soil maps. The taxonomic legend used was developed from selected concepts in Soil Taxonomy, generally at the subgroup level. The mapping rate is about one township per day with maximum use of stereo-interpretation. Maps are compiled on composites of the U.S. Geological Survey 1:250,000 quadrangles. A concept of geomorphic regions is used to identify and isolate distinctive parent materials and topography. About 75 such regions are delineated. A concept of soil landscape units (SLU) was developed for mineral soils. These are viewed as collections of soil bodies having broad similarity in particlesize class of the control section and of material below the control section; in position and duration of the water table; and in the presence or absence of a mollic epipedon. For areas of organic soils, a taxonomic legend using suborder concepts was developed.

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