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| dc.contributor.author | Degsew Abiyu | |
| dc.date.accessioned | 2020-12-31T11:27:16Z | |
| dc.date.available | 2020-12-31T11:27:16Z | |
| dc.date.issued | 2020-12-12 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/11803 | |
| dc.description.abstract | Different land use systems and altitude variation have different potentials to change soil physicochemical properties either positively or negatively. The study aimed to investigate the dynamics of soil organic carbon and selected physicochemical properties in four major land use types within different altitude ranges in the Koga watershed of the Lake Tana basin. Total of 108 soil samples were taken from each land use types, three strata, and three depth layers with three replications. The sampling campaign was undertaken in November and December 2019 and then analyzed and recorded both onsite and in the laboratory. The data were subjected to analysis of variances (ANOVA) models using Statistical Package for Social Sciences (SPSS) software. Univariate and Multiple comparisons of Post Hoc LSD tests was also used to assess the mean difference of the SOC and other selected soil properties within altitude range, land uses, and sampling depth levels. The results showed that overall mean soil organic carbon stock was higher under natural forest land use (42.41 ± 0.97t/ha) compared with other land use types at all depths. This could be due to greater inputs of vegetation and reduced decomposition of organic matter. Altitude effect on SOC stock was observed and highest value (43.90t/ha) was recorded in upland strata/dega agro-ecology as compared to lower altitude/woinadega agro-ecology soils. This was due to the difference in temperature and rainfall which affects the soil decomposition and mineralization which increases with increasing temperature. The higher SOC stocks under natural forest and eucalyptus plantation suggesting that management strategies to maintain and preserve the forest in order to maintain carbon storage in the future are essential. Keywords: Soil organic carbon, Carbon Sequestration, Climate change mitigation, Land use type, Altitude, Blue Nile Basin, Ethiopia | en_US |
| dc.language.iso | en | en_US |
| dc.subject | ENVIRONMENT & CLIMATE CHANGE | en_US |
| dc.title | SOIL ORGANIC CARBON AND SELECTED PHYSICOCHEMICAL PROPERTIES DYNAMICS UNDER DIFFERENT LAND USE TYPES AND ALTITUDINAL RANGE OF THE KOGA WATERSHED, NORTHWESTERN ETHIOPIA | en_US |
| dc.type | Thesis | en_US |
