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| dc.contributor.author | TIGISTU, WASSIE AGEGNEHU | |
| dc.date.accessioned | 2022-12-01T11:20:47Z | |
| dc.date.available | 2022-12-01T11:20:47Z | |
| dc.date.issued | 2022-03-23 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/14683 | |
| dc.description.abstract | Soil degradation is one of the most serious problems in Ethiopian highlands. Poor conservation design, less perception and involvement of farmers, weak monitoring and evaluation of soil and water conservation practice are the main constraints. Because of this reason retaining soil moisture is very low in the area. Soil conservation is the way to protect the productive land and improving soil moisture. Therefore, the study was conducted to evaluate the effect of soil and water conservation practice (SWC) on soil moisture dynamics for Dengora and Keritwuha watersheds in East and West Belessa woredas respectively. The in- situ soil moisture data was collected by using Time Doman Reflectometry (TDR) and qualitative data were collected by using Focus Group Discussion (FGD) from watershed beneficiaries in Dengora and Keritwuha watersheds. Soil moisture was estimated by using the new physical based Optical Trapezoid Model (OPTRAM) driven from Copernicus Sentinel-2A level 1C Satellite images. The model relies on a physical linear relationship between pixel distributions in the shortwave infrared transformed reflectance (STR)-Normalized Difference Vegetation Index (NDVI) trapezoidal space. The results were indicated that the soil moisture estimates by OPTRAM model and in situ soil moisture at the two sites were showed that a reasonable coefficient of determination R 2 ranges from 0.73 up to 0.95, RMSE and bias was also ranges between within 0.01–0.08 cm3 /cm3. According to the evaluation, therefor satellite soil moisture and in-situ soil moisture data‘s have good relationship. The watersheds area coverage by soil and water conservation (SWC) practice were increased from 2015 up to 2020 by 19.33 ha (40.03%) for Keritwuha watershed Menu catchment, 11.16ha (56.98%) Dengora watershed Megachoch catchment and 28.05ha (30.0%) Dengora watershed Washkayna catchment and the corresponding soil moisture for these watersheds was also increased from 0.12 cm 3 /cm 3 to 0.18 cm 3 /cm 3 , 0.15 to 0.38 cm 3 /cm 3 and 0.16 to 0.31 cm 3 /cm 3 respectively with in the insignificant change of rainfall pattern. Therefor this change of soil moisture was related with SWC practice. From the focus group participators in Dengora and Keritwuha watershed farmers perceived that soil and water conservation practices were very effectives for improving soil moisture. These respondents were willing to introduce new soil and water conservation technologies. Key words: - Focus Group Discussion (FGD), OPTRAM, Sentinel -2, TDR | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | CIVIL AND WATER RESOURCE ENGINEERING | en_US |
| dc.title | EVALUATE THE EFFECT OF SOIL AND WATER CONSERVATION PRACTICE ON SOIL MOISTURE DYNAMICS FOR DENGORA AND KERITWUHA WATERSHEDS IN EAST AND WEST BELESSA WOREDAS | en_US |
| dc.type | Thesis | en_US |
