About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in SSSAJ

  1. Vol. 48 No. 6, p. 1416-1422
     
    Received: Feb 22, 1984
    Accepted: July 9, 1984


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2136/sssaj1984.03615995004800060043x

Gully Rehabilitation—A Three-Stage Process in a Sodic Soil1

  1. Burchard H. Heede and
  2. Leonard F. DeBano2

Abstract

Abstract

The geomorphic, edaphic, and vegetation changes occurring in sodic soils were studied during a gully rehabilitation project in western Colorado. Soil material was collected along transects which traversed individual gullies in the network. A topographic survey was also made of each transect to determine areas of erosion and deposition. Along each transect samples were collected on exposed sodium banks, recent and old gully bank colluvium, sediment deposited in the channel, partially stable gully banks, and stable gully banks. The six sample locations were sampled in 1962, 1965, 1967, and 1981. The samples collected at the six locations were analyzed for pH; soluble calcium, magnesium, and sodium in a saturated extract; total calcium, magnesium, and sodium; water soluble sodium; cation exchange capacity; and soil texture. Exchangeable sodium percentage (ESP) and sodium adsorption ratio (SAR) were calculated. The analysis of the data showed that gully rehabilitation occurred in three stages: nonvegetated sodium banks disintegrated; the colluvial material from these eroded banks was weathered and leached; and, finally when enough sodium had been leached from the eroded material, it was stabilized and vegetated as older colluvial material at the base of high sodium gully banks or as channel alluvium deposited behind gully structures. These changes led to an overall stabilization of the gullies and reduced suspended sediment and peak flows.

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

Copyright © . Soil Science Society of America