Pedosphere 4(4): 347--356, 1994
ISSN 1002-0160/CN 32-1315/P
©1994 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Salt-water dynamics in soils: IV. Changes of ionic composition in soil profiles during water evaporation and infiltration
MENG Fan-Hua and YOU Wen-Rui
Institute of Soil Science, Academia Sinica, P. O. Box 821, Nanjing 210008 (China)
ABSTRACT
      Through a simulation test carried out with soil columns (61.8 cm in diameter), the changes of ionic composition in soil profile during the processes of water evaporation and infiltration were studied. Under evaporation conditions, ions moving upward with fresh groundwater were mainly Cl-, SO42-, Ca2+, and Na+. When the mineralized groundwater took part in the salt accumulation, the ionic composition in soils was close to that in ground water supplemented. Under rainfall infiltration conditions, the salt-leaching role occurred mainly in the top soil. With the decrease of total salt content, NO3- and Cl- reduced rapidly, SO42- decreased slowly, but HCO3- had a little change only. Among cations, Na+ and Ca2+ contents lowered at the same speed, and Mg2+ decreased slowly
Key Words:  ion composition, salt-water dynamics, water evaporation, water infiltration
Citation: Meng, F. H. and You, W. R. 1994. Salt-water dynamics in soils: IV. Changes of ionic composition in soil profiles during water evaporation and infiltration. Pedosphere. 4(4): 347-356.
View Full Text



Copyright © 2024 Editorial Committee of PEDOSPHERE. All rights reserved.
Address: P. O. Box 821, 71 East Beijing Road, Nanjing 210008, China    E-mail: pedosphere@issas.ac.cn
Technical support: Beijing E-Tiller Co.,Ltd.