Effects of land use types on selected soil physical and chemical properties: The case of Kuyu District, Ethiopia

Tufa, Mulugeta; Melese, Asmare; Tena, Wondwosen

doi:10.18393/ejss.510744

Cited by 40 publications

(51 citation statements)

References 22 publications

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“…This finding clearly showed the positive impact of SLM practices on soil displacement and deposition processes. Our finding agrees with those of Ademe et al (2017), and Tufa et al (2019). Ademe et al (2017) found higher sand and silt contents, but lower clay content in the untreated watershed than the treated watershed.…”

Section: Particle Size Distributionsupporting

confidence: 93%

“…Ademe et al (2017) found higher sand and silt contents, but lower clay content in the untreated watershed than the treated watershed. Moreover, Tufa et al (2019) found no significant difference in sand particle proportions under land-use types, soil depths, and in the interaction of land-use types with soil depth. Both studies found significant differences in silt and clay proportions at different land-use types, with higher sand content on the surface and higher clay content at the subsurface of the soils.…”

Section: Particle Size Distributionmentioning

confidence: 68%

“…The current finding agrees with the findings of Demelash and Karl (2010) and Alemayehu and Fisseha (2018) who found higher bulk density in non-conserved landscapes than the conserved landscapes. Furthermore, Tufa et al (2019) reported higher bulk density on the surface 0-20-cm soil depth in a cropland.…”

Section: Bulk Densitymentioning

confidence: 92%

“…Furthermore, the surface soil of cropland showed lower clay content than the subsurface soil in the treated sub-watershed. This could be attributed to the preferential removal of clay particles and its downward Interaction means under each heading within columns followed by different letter(s) are significantly different from each other at P ≤ 0.05; *significant at P ≤ 0.05; **significant at P ≤ 0.01; ***significant at P ≤ 0.001; ns non-significant, EC electrical conductivity (dS m −1 ), pH soil reaction (pH meter), TN total nitrogen, Av.P available phosphorus (PPM), Ex.K exchangeable potassium (%), OC organic carbon (%) movement into the subsurface soil layer through the process of clay migration (Tufa et al 2019) and erosion impact on the topsoil, although trapped by conservation structures in the deposition zone. This finding clearly showed the positive impact of SLM practices on soil displacement and deposition processes.…”

Section: Particle Size Distributionmentioning

confidence: 99%

“…However, comparative studies on the effects of these interventions at watershed levels are limited in the country. Few studies, such as Mulugeta and Karl (2010) in Farta district, Amhara Region; Hishe et al (2017) in the Middle Silluh Valley of Tigray Region; Ademe et al (2017) in the Wonago district of Southern Nations, Nationalities, and Peoples' Region; and Tufa et al (2019) at Kuyu district in Oromiya Region, have been undertaken and showed improvements of selected soil properties at the conserved landscapes relative to the nonconserved ones. These studies took place in different agroecological zones, and therefore, this study assessed the effects of SLM interventions on selected soil physicochemical properties by comparing adjacent subwatersheds, whereby one had SLM measures and another did not have, in Geda watershed, Amhara Region.…”

Section: Introductionmentioning

confidence: 99%

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Effects of sustainable land management interventions on selected soil properties in Geda watershed, central highlands of Ethiopia

et al. 2020

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Background: Land degradation through soil erosion by water is severe in the highlands of Ethiopia. In order to curb this problem, the government initiated sustainable land management interventions in different parts of the country since 2008, and in Geda watershed since 2012. However, the impacts of the interventions on soil properties were not assessed so far. Thus, this study investigated the impacts of sustainable land management interventions on selected soil properties in Geda watershed. Soil samples were collected from treated and untreated subwatersheds at the upper and lower landscape positions, from cropland and grazing lands at two soil depths (0-15 cm and 15-30 cm). Selected soil physicochemical properties were assessed with respect to landscape position, land-use type, and soil depth in both treated and untreated sub-watersheds. Results: Generally, most of the soil physicochemical properties differed greatly across sub-watersheds, land-use types, and soil depths. Clay, electrical conductivity, total N, available P, exchangeable K, and organic carbon were higher in the treated sub-watershed, whereas sand, silt, bulk density, and pH were higher in the untreated subwatershed. The higher sand, silt, and bulk density could be attributed to erosion, while the higher pH could be due to the higher exchangeable Na in the untreated sub-watershed. Most of the selected soil chemical properties were not affected by landscape position, but land-use type affected available P and organic carbon with higher mean values at croplands than at grazing lands, which could be ascribed to the conservation structure and tillage of the soils in that conservation structures trap and accumulate transported organic materials from the upper slope, while tillage facilitates aeration and decomposition processes. Conclusion: Sustainable land management interventions improved soil physicochemical properties and brought a positive restoration of the soil ecosystem. Maintaining the soil conservation measures and enhancing community awareness about the benefits, coupled with management of livestock grazing are required to sustain best practices.

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Section: Particle Size Distributionsupporting

confidence: 93%

Section: Particle Size Distributionmentioning

confidence: 68%

Section: Bulk Densitymentioning

confidence: 92%

Section: Particle Size Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of sustainable land management interventions on selected soil properties in Geda watershed, central highlands of Ethiopia

et al. 2020

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Soil pH mapping as a function of land use, elevation, and rainfall in the lake tana basin, northwestern of ethiopia

Belay,

Selassie,

Tsegaye

et al. 2023

Agrosystems Geosci & Env

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Soil acidity has become a serious problem in the northern highlands of Ethiopia, limiting land productivity mainly that of crop yield. Research had been done to try to come up with results showing the area was affected by severe acidity, but based on few watersheds and districts in a haphazard way. The objective of this research was therefore to develop a comprehensive soil pH map that covers a broader area of 27 districts covering 2,810,055 ha of land to assess the degree of soil acidity in the Tana Sub‐basin, northwestern highlands of Ethiopia. Using GPS (3‐m precision), 2652 soil point data were collected. Precipitation, elevation, and land use cover were taken into account when creating an interpolated soil pH map. Using adjacent probed pH values, ordinary kriging interpolation (R2 = 0.65; root‐mean‐square error = 0.37125) technique was used to estimate the unmeasured locations, while the spatial pH variability was mapped using the geostatistical (GS+10) software. All Food and Agriculture Organization of the United Nations soil pH categories, with 11.22%, 19.97%, 18.77%, 14.59%, 9.64%, and 6.29% of the soil samples being extremely acidic, strongly acidic, moderately acidic, slightly acidic, neutral, moderately alkaline and strongly alkaline, respectively, were observed. The interpolation result showed a moderate coefficient of variation (10.52%) indicating that the research area had medium variability. In addition, the nugget‐to‐total semivariance ratio ranged from 25% to 75%, indicating moderate geographic dependence. The pH semivariograms best fitted the exponential model, which means the one with maximum (R2 = 0.834) and with minimum residual sum of squares (1.819E‐06) value for mapping of pH. Our result showed that soil pH was inversely dependent on precipitation and altitude, while it varies with land use type. The research result/map could give useful tools for effective integrated land management to minimize soil acidification by policymakers, agriculturalists, and other stakeholder groups. We also recommended future routine updates on the size and distribution of surface soil acidity in the study area.

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Effects of Land-Use Change on the Soil Organic Carbon and Selected Soil Properties in the Sultan Marshes, Turkey

Korkanç

Mert

et al. 2022

Wetlands

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This study aims the effects of land use changes on the carbon storage capacity and some soil properties of The Sultan Marshes was partially drained during the middle of the last century and converted to other land uses.Undisturbed soil sampling was performed in different land use types (rangelands, shrubs, marsh, agriculture, and dried lake area) in the wetland area at depths of 0-50 cm, and soil organic carbon (SOC), bulk density, and carbon stocks of soils for each land use type were calculated at 10 cm soil depth levels. Furthermore, disturbed soil samples were taken at two soil depths (0-20 cm and 20-40 cm), and the particle size distribution, pH, electrical conductivity (EC), aggregate stability and dispersion ratio (DR) properties of the soils were analyzed. Data were processed using ANOVA, Duncan's test, and Pearson's correlation analysis.The soil properties affected by land use change were SOC, carbon stock, pH, EC, aggregate stability, clay, silt, sand contents, and bulk density.SOC and carbon stocks were high in rangeland, marsh, and shrub land, while they were low in agriculture and drained lake areas. As the soil depth increased, SOC and carbon stock decreased. The organic carbon content of the soils exhibited positive relationships with aggregate stability, clay, and carbon stock, while it showed a negative correlation with bulk density, pH, and DR. The results showed that the drainage and conversion of the wetland caused a signi cant decrease in the carbon

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Effects of land use types on selected soil physical and chemical properties: The case of Kuyu District, Ethiopia

Cited by 40 publications

References 22 publications

Effects of sustainable land management interventions on selected soil properties in Geda watershed, central highlands of Ethiopia

Effects of sustainable land management interventions on selected soil properties in Geda watershed, central highlands of Ethiopia

Soil pH mapping as a function of land use, elevation, and rainfall in the lake tana basin, northwestern of ethiopia

Effects of Land-Use Change on the Soil Organic Carbon and Selected Soil Properties in the Sultan Marshes, Turkey

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