Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands

Hailu Addis, Andreas Klik, Theib Oweis and Stefan Strohmeier
Additional contact information
Hailu Addis: Institute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, Austria
Andreas Klik: Institute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, Austria
Theib Oweis: Institute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, Austria
Stefan Strohmeier: Institute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, Austria

Soil and Water Research, 2016, vol. 11, issue 3, 163-171

Abstract: Deforestation of native forests for crop production in the Gumara-Maksegnit watershed, located in the Lake Tana basin, Ethiopia, dramatically increases the vulnerability of the soil for rainfall driven erosion. Hence, the central task of the study is to investigate general links of land-use and topography related to selected soil properties. The 53.7 km2 watershed was divided into a 500 × 500 m square grid to sample bulk density (ρd), pH, soil organic carbon (SOC), total nitrogen (TN), available phosphorus (AP), and texture of topsoil. Such properties were investigated with respect to the two main land-uses, forest and agriculture, and three different slope steepness classes, 0-10%, 10-30%, > 30%. Descriptive statistics and correlation analyses were undertaken to explore potential dependencies of the obtained soil parameters according to land-use and slope steepness. The study indicates higher SOC, TN, silt and sand content in forest soils compared to agricultural soils, while solely ρd is lower in the forest soil. Overall increases of SOC, TN, silt, and sand content from the gentle to the steep slopes have been observed for both land-uses. In contrast, clay content and ρd seem to increase from steep to gentle slopes on agricultural areas, which might be due to accumulation of particularly fine soil particles eroded from the steep areas. Basic correlations valid for all land-uses and slope steepness classes have not been detected. Nevertheless, the study suggests slope steepness as a tool to assess the potential drivers of soil depletion in the Ethiopian Highlands.

Keywords: agricultural watershed; slope steepness; soil attributes; soil erosion (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://swr.agriculturejournals.cz/doi/10.17221/117/2015-SWR.html (text/html)
http://swr.agriculturejournals.cz/doi/10.17221/117/2015-SWR.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlswr:v:11:y:2016:i:3:id:117-2015-swr

DOI: 10.17221/117/2015-SWR

Access Statistics for this article

Soil and Water Research is currently edited by Ing. Markéta Knížková, (Executive Editor)

More articles in Soil and Water Research from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().