8. Alfisols: High Base Status Soils with Finer-Textured Subsoil Horizons

  1. S. W. Buol B.S., M.S., Ph.D.1,
  2. R. J. Southard B.S, M.S., Ph.D.2,
  3. R. C. Graham3 and
  4. P. A. McDaniel B.S., M.S., Ph.D.4

Published Online: 5 AUG 2011

DOI: 10.1002/9780470960622.ch8

Soil Genesis and Classification, Sixth Edition

Soil Genesis and Classification, Sixth Edition

How to Cite

Buol, S. W., Southard, R. J., Graham, R. C. and McDaniel, P. A. (2011) Alfisols: High Base Status Soils with Finer-Textured Subsoil Horizons, in Soil Genesis and Classification, Sixth Edition, Wiley-Blackwell, Oxford, UK. doi: 10.1002/9780470960622.ch8

Author Information

  1. 1

    North Carolina State University, Raleigh, USA

  2. 2

    University of California, Davis, USA

  3. 3

    University of California, Riverside, USA

  4. 4

    University of Idaho, Moscow, USA

Publication History

  1. Published Online: 5 AUG 2011
  2. Published Print: 2 SEP 2011

ISBN Information

Print ISBN: 9780813807690

Online ISBN: 9780470960622

SEARCH

Keywords:

  • Alfisols, high base status soils - with finer-textured subsoil horizons;
  • central concept of Alfisols - that of forest soils, stable landscape positions with clay accumulation;
  • Alfisols, widely distributed globally - approximately 13,156,000 km2 (USDA-NRCS database);
  • cooler regions, affected by glaciation - Alfisols, on late Pleistocene surfaces;
  • pedogenic processes - in most Alfisols, subsurface horizons enriched in layer silicate clays;
  • clay deposition, with sesquioxides and organic matter;
  • geomorphic relationships - and clay accumulation in Xeralfs, associated soils in central California;
  • leaching of carbonates, from zone of developing - solum and braunification, prerequisites to Alfisols;
  • Albic horizons, overlying - argillic, fragipan, or natric horizons of many Alfisols;
  • uses of Alfisols - for cultivated crops, winter (hardy) hayland, pasture, range and forest

Summary

This chapter contains sections titled:

  • Setting

  • Pedogenic Processes

  • Uses of Alfisols

  • Classification of Alfisols

  • Perspective