About Us | Help Videos | Contact Us | Subscriptions

Soil Science Society of America Journal Abstract -

Predicting Ionic Distributions in Large Soil Columns1


This article in SSSAJ

  1. Vol. 39 No. 6, p. 1080-1084
    Received: Nov 1, 1974
    Accepted: Aug 12, 1975

Request Permissions

  1. P. J. Wierenga,
  2. M. J. Shaffer,
  3. S. P. Gomez and
  4. G. A. O'Connor2



The distribution of various cations and anions was measured with depth and time in a large lysimeter column periodically irrigated with saline water. Samples of the soil solution were removed with extraction cups placed at depths of 25, 50, 75, 100, 125, and 150 cm below the soil surface in the lysimeters. Observed ionic distributions were compared with calculated values obtained by combining a transient water flow model with a chemical plate theory model. Good agreement was obtained between observed and predicted depth distribution profiles for SO42-, Cl-, Na+, and Ca2+. Soluble Mg2+ and HCO2- concentrations were overpredicted suggesting that further refinement of the chemical subroutine may be needed.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America