dc.contributor | Klik, Andreas | en_US |
dc.contributor | Strohmeier, Stefan | en_US |
dc.creator | Addis, Hailu Kendie | en_US |
dc.date.accessioned | 2016-11-24T09:58:29Z | |
dc.date.available | 2016-11-24T09:58:29Z | |
dc.identifier | http://www.scirp.org/journal/PaperInformation.aspx?PaperID=57289 | en_US |
dc.identifier | https://mel.cgiar.org/reporting/download/hash/CALCpDBu | en_US |
dc.identifier.citation | Hailu Kendie Addis, Andreas Klik, Stefan Strohmeier. (19/6/2015). Spatial Variability of Selected Soil Attributes under Agricultural Land Use System in a Mountainous Watershed, Ethiopia. International Journal of Geosciences, 6 (6), pp. 605-613. | en_US |
dc.identifier.uri | https://hdl.handle.net/20.500.11766/5076 | |
dc.description.abstract | In the Ethiopian Highlands, research projects were often measuring soil attributes of spatially
structured point data but soil variability at a watershed scale is not clearly defined. This study was
conducted to assess the correlation among selected soil attributes and to illustrate the spatial
pattern and dependence of neighboring observations. The 53.7 km2 study watershed was divided
into a 500 m by 500 m square grid using arcgis and at the center of each grid soil samples from 0
to 25 cm depth were collected within 184 locations. The descriptive statistics revealed available
phosphorous (AP) had the largest coefficient of variation (CV = 104) while pH was the least varia-
ble. There was a positive link between elevation and SOC whereas bulk density (ρd) and pH indi-
cated an inverse relationship with elevation and SOC. The value for nugget/sill of ρd, pH and ele-
vation are less than 0.25, and depicts that it has strong spatial autocorrelation. The value for nugget/
sill of SOC, and TN found between 0.25 and 0.75, and indicate that they have moderate spatial au-
tocorrelation. With regard to AP, the value for nugget/sill is more than 0.75, which displays a weak
spatial autocorrelation. Semivariograms of ρd, pH and elevation were best fitted to Gaussian mod-
el whereas SOC, TN and AP were best fitted to exponential function. Generally, the study verified
that soil measurements taken at the given scale through regular sampling interval were adequate
to capture the spatial dependence of numerous initial soil assessments in the study watershed. | en_US |
dc.format | PDF | en_US |
dc.language | en | en_US |
dc.publisher | Scientific Research Publishing | en_US |
dc.rights | CC-BY-4.0 | en_US |
dc.source | International Journal of Geosciences;6,(2015) Pagination 605-613 | en_US |
dc.subject | soil landscape | en_US |
dc.subject | soil attribute | en_US |
dc.subject | spatial variability | en_US |
dc.subject | semivariogram | en_US |
dc.subject | watershed | en_US |
dc.title | Spatial Variability of Selected Soil Attributes under Agricultural Land Use System in a Mountainous Watershed, Ethiopia | en_US |
dc.type | Journal Article | en_US |
dcterms.available | 2015-06-19 | en_US |
dcterms.extent | 605-613 | en_US |
cg.creator.id | Strohmeier, Stefan: 0000-0003-0723-5964 | en_US |
cg.contributor.center | International Center for Agricultural Research in the Dry Areas - ICARDA | en_US |
cg.contributor.center | University of Natural Resources and Life Sciences, Center for Development Research - BOKU - CDR | en_US |
cg.contributor.center | Amhara Regional Agricultural Research Institute - ARARI | en_US |
cg.contributor.crp | CGIAR Research Program on Water, Land and Ecosystems - WLE | en_US |
cg.contributor.funder | Austrian Development Agency - ADA | en_US |
cg.contributor.project | Reducing land degradation and farmers’ vulnerability to climate change in the highland dry areas of north-western Ethiopia | en_US |
cg.contributor.project-lead-institute | International Center for Agricultural Research in the Dry Areas - ICARDA | en_US |
cg.coverage.region | Eastern Africa | en_US |
cg.coverage.country | ET | en_US |
cg.coverage.admin-unit | Amhara | en_US |
cg.coverage.geolocation | Latitude: 12.409753820104939; Longitude: 37.421264201402664 | en_US |
cg.contact | hailukendie@gmail.com | en_US |
dc.identifier.status | Open access | en_US |
mel.project.open | http://rainfedsystems.icarda.org/ | en_US |
mel.funder.grant# | Austrian Development Agency - ADA :Korr/185-PP/2012 | en_US |
cg.issn | 1802-6222 | en_US |
cg.journal | International Journal of Geosciences | en_US |
cg.issue | 6 | en_US |
cg.volume | 6 | en_US |