ABSTRACT:
The design and results of a tillage field experiment conducted in Central Spain in 1995/96 are presented. Soil translocation models of the type d = f(ST;SP), in which the absolute, forward and lateral translocation are calculated as functions of the slope gradients simultaneously in both directions parallel (ST) and perpendicular to the direction of tillage (SP), were developed. It was determined that: a) forward translocation dDT simultaneously is inversely correlated with the slope ST and directly correlated with the slope SP; b) lateral translocation dDP is inversely correlated with the slope SP; and c) the distance in the actual direction of soil movement d, only is inversely cowelated with the slope ST. From simulation results it was concluded that the effects of complex topography and of the interactions between topography and patterns of tillage on soil translocation, are much more important than predicted using one-dimensional or diffusion type models of soil translocation.
Footnotes
Dr. Saturnino de Alba is a soil scientist in the Department of Geodinamic, Faculty of Geology, Universi-dad Complutense of Madrid, Ciudad Universitaria, Madrid, Spain.
- Copyright 2001 by the Soil and Water Conservation Society
This article requires a subscription to view the full text. If you have a subscription you may use the login form below to view the article. Access to this article can also be purchased.
