Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands
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 topo...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2016-09-01
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| Series: | Soil and Water Research |
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| Online Access: | https://swr.agriculturejournals.cz/artkey/swr-201603-0003_linking-selected-soil-properties-to-land-use-and-hillslope-a-watershed-case-study-in-the-ethiopian-highlands.php |
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| author | Hailu ADDIS Andreas KLIK Theib OWEIS Stefan STROHMEIER |
| author_facet | Hailu ADDIS Andreas KLIK Theib OWEIS Stefan STROHMEIER |
| author_sort | Hailu ADDIS |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-10T08:04:42Z |
| format | Article |
| id | doaj.art-f6f172068e5f48318af67f5194d33117 |
| institution | Directory Open Access Journal |
| issn | 1801-5395 1805-9384 |
| language | English |
| last_indexed | 2024-04-10T08:04:42Z |
| publishDate | 2016-09-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Soil and Water Research |
| spelling | doaj.art-f6f172068e5f48318af67f5194d331172023-02-23T03:48:32ZengCzech Academy of Agricultural SciencesSoil and Water Research1801-53951805-93842016-09-0111316317110.17221/117/2015-SWRswr-201603-0003Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian HighlandsHailu ADDIS0Andreas KLIK1Theib OWEIS2Stefan STROHMEIER3Institute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, AustriaInstitute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, AustriaInstitute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, AustriaInstitute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, AustriaDeforestation 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.https://swr.agriculturejournals.cz/artkey/swr-201603-0003_linking-selected-soil-properties-to-land-use-and-hillslope-a-watershed-case-study-in-the-ethiopian-highlands.phpagricultural watershedslope steepnesssoil attributessoil erosion |
| spellingShingle | Hailu ADDIS Andreas KLIK Theib OWEIS Stefan STROHMEIER Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands Soil and Water Research agricultural watershed slope steepness soil attributes soil erosion |
| title | Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands |
| title_full | Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands |
| title_fullStr | Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands |
| title_full_unstemmed | Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands |
| title_short | Linking selected soil properties to land use and hillslope - A watershed case study in the Ethiopian Highlands |
| title_sort | linking selected soil properties to land use and hillslope a watershed case study in the ethiopian highlands |
| topic | agricultural watershed slope steepness soil attributes soil erosion |
| url | https://swr.agriculturejournals.cz/artkey/swr-201603-0003_linking-selected-soil-properties-to-land-use-and-hillslope-a-watershed-case-study-in-the-ethiopian-highlands.php |
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