Journal of New Approaches in Water Engineering and Environment
Scientific Journal

The effect of Badland erosion on the loss of organic matter and changes in some soil properties in dry areas of Khuzestan province (Shoushtar Darb Khazineh basin)

Document Type : Original Article

Authors

Kamran Mohsenifar 1
Ali Helfi 2
Ebrahim Pnahpour 1

1 Department of Soil Science, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

2 Department of Soil Science, Khouzestan Science  and Research Branch, Islamic Azad University, Ahvaz, Iran

https://doi.org/10.22034/nawee.2024.440441.1065
Abstract
Objective: The purpose of this research is to investigate the effect of Badland erosion on the loss of soil nutrients and soil properties in Khuzestan province. For this purpose, the studied basin was divided into two parts under protection and without protection in the protected part, watershed management activities such as terrace construction, the revitalization and distribution of vegetation, and chapari dams were built, and no protection works were performed in the erosion part.
Methods: In each of the two regions, two 200-meter-long transects were used to sample the soil surface (0-10 cm) at 50-meter intervals on each transect. Then the samples were transferred to the laboratory and the desired parameters and the amount of soil loss were compared and calculated.
Results: The results showed that the minimum organic matter in the protected soil was 1% while in the erosion zone 0.32%, indicating the erosion of the surface soil and the loss of soil organic matter. Soil protection operations in the studied area caused an increase in organic matter, electrical conductivity, clay, silt, and porosity (67.57, 37.50, 13.39, 12.88, and 10.20 percent) respectively, compared to the erosion area in which the reaction of soil, sand and apparent specific gravity was 2.82%, 100% and 12.12% less than the erosion area, and this statistically meant there was a significant difference between the two areas. The results demonstrated the positive effect of watershed operations on the improvement of the soil condition in the protected area
Conclusions: Due to the reduction of vegetation cover, organic matter, destruction of soil structure, and reduction of stability of soil particles, the soil erodibility index increases.

Keywords

Electrical conductivity
soil texture
porosity
leaching
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Journal of New Approaches in Water Engineering and Environment
Volume 3, Issue 1
March 2024
Pages 1-12

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