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Measuring the Hydraulic Conductivity of Soil Horizons with Continuous Macropores
Author(s) -
Bouma J.
Publication year - 1982
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1982.03615995004600020047x
Subject(s) - macropore , loam , subsoil , hydraulic conductivity , soil science , soil horizon , geology , hydrology (agriculture) , soil water , chemistry , geotechnical engineering , mesoporous material , biochemistry , catalysis
Measurement of K sat of soil horizons with continuous macropores is discussed. Different fluxes at grad H = 1 cm cm −1 and zero pressure head ranged from 2,000 to 10 cm day −1 in the B21g (clay) of a Typic Fluvaquent with vertical worm channels and from 20 to 1 cm day −1 in the Clg (compact sandy loam) of a Plaggeptic Haplaquod. Fluxes were obtained using (i) large detached columns ( K sat entire soil), (ii) columns that were attached to the subsoil, and (iii) detached columns with light crusts on top [ K sat of the soil matrix, which is referred to as K (sat) ].