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Carbon/sesquioxide ratios in organic complexes and the transition albic‐spodic horizon
Author(s) -
BUURMAN P.
Publication year - 1985
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1985.tb00329.x
Subject(s) - sesquioxide , podzol , chemistry , total organic carbon , carbon fibers , inorganic chemistry , mathematics , soil water , environmental chemistry , geology , soil science , organic chemistry , algorithm , composite number
SUMMARY Organic matter‐sesquioxide complexes in podzol B horizons are precipitated at specific carbon/sesquioxide ratios. Field data indicate that only part of the potential acidity is neutralized and that the maximum C/R 2 O 2 ratio (minimum metal content) at which organic complexes will precipitate depends on pH of the soil and consequently on parent material and profile development. Although C/R 2 O 3 ratios may be used regionally to predict the transition from soluble to precipitated complexes, such ratios cannot be used in soil classification or in a general definition of albic and spodic horizons.