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THE USE OF MICROPEDOLOGY IN THE STUDY OF SOME ONTARIO PODZOLIC PROFILES
Author(s) -
RENNIE P. J.
Publication year - 1966
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.1365-2389.1966.tb01456.x
Subject(s) - humus , horizon , sampling (signal processing) , soil science , soil horizon , environmental science , magnitude (astronomy) , physical geography , hydrology (agriculture) , geology , geography , mathematics , soil water , geometry , geotechnical engineering , computer science , physics , astronomy , filter (signal processing) , computer vision
Summary By adopting a micropedological approach, in which samples were taken at intervals as small as 5 mm, very acute changes in soil pH with depth were revealed. For certain Ontario podzolic profiles under long‐established coniferous forest, pH values changed from around 4 in the topmost humus layer to around 6 at a depth as little as 15 to 20 cm, with little change below this depth. Because much of the magnitude and sharpness of these gradients in properties could be lost by conventional horizon‐sampling, the micropedological approach—used so profitably in some branches of soil science—warrants wider adoption, particularly in shallow profiles.