Journal of the Japanese Society of Soil Physics
Online ISSN : 2435-2497
Print ISSN : 0387-6012
Effects of Subsoil Breaking on Surface Runoff, Pressure Head and Soil Temperature in a Sloping Field
Toshitsugu MoroizumiYuichi SatoKoichi SatoTakeshi Miura
Author information
JOURNAL FREE ACCESS

2001 Volume 88 Pages 45-52

Details
Abstract

This paper discusses the effects of subsoil breaking on the change of pressure head, soil temperature and runoff discharge in space and time in a sloping field. A controlled comparison experiment was conducted in a subsoil breaking field and a no-subsoil breaking field. The results showed that the runoff ratio of the subsoil-breaking field was about 1/10 of that in the no-subsoil breaking field. This indicates that subsoil breaking promotes the infiltration of rainfall into the soil and can reduce the surface runoff discharge. The spatial distribution of the equi-pressure heads during rainfall was complicated, and the coefficients of variation were large. However, that of the equi-pressure heads before and after rainfall showed the similar patterns of variation in both fields. As for soil temperatures, we didn’t observe a large difference between the subsoil breaking field and the no-subsoil breaking field, and the spatial variation was smaller than that of the pressure head.

Content from these authors
© 2001 Japanese Society of Soil Physics
Previous article Next article
feedback
Top