Lessons from Community Based Participatory Integrated Watershed Management, the Case of Somodo Watershed, South-Western Ethiopia, A Review

Leta Hailu
2021 International Journal of Environmental Sciences & Natural Resources  
Land degradation due to soil erosion is a serious problem for the agricultural sector of developing countries. Somodo watershed is degraded due to inappropriate land use, overgrazing, and high rainfall causing severe soil erosion. A community based participatory integrated watershed management program has been proposed and implemented at Somodo watershed since 2011 to solve biophysical and socioeconomic related problems. Therefore, the objective of the study is to summarize the major
more » ... ns and achievements of the watershed. Before the intervention of different technologies, problems were identified and prioritized by the community of the watershed. Awareness creation and capacity building training were held in the watershed for more than 264 farmers, 47 DAs, and 49 administration staffs on different technologies at different times. Soil erosion control measures, soil fertility enhancement practices, niche compatible multipurpose trees introduction, and other interventions were implemented. River discharge and suspended sediment were monitored at the outlet of the watershed. Accordingly, more than 190km soil bund and 45km Vetiver hedgerows were done in the watershed, and 25,455 multipurpose tree seedlings and 40,000 seedlings of five improved coffee varieties have been raised at community nursery and planted in the watershed. Improved varieties of various fruits and crops were introduced and well adapted in the watershed. Demonstration of lime technologies was introduced on 35 ha of 140 farmer's farmlands. The established level soil bund stabilized with vetiver hedgerows were significantly (P<0.01) affected SMC (%), BD (g/ cm 3 ), and SOC (%) on conserved croplands. Two years aged vetiver hedgerows reduced slope of treated farmland by 2.5 (%) and improved available phosphorus and exchangeable acidity above the hedgerows. The soil pH has slightly increased in limed and enhanced yield of crops. In general, the study revealed that the intervention of integrated watershed management (IWM) increases household source of income, improved the practice of soil and water conservation (SWC), utilization of organic and inorganic fertilizers that enhances the soil quality and reduce the risk of soil erosion. Furthermore, socioeconomic related factors of the farmers were improved as compared to the base year. In summary, as a result of the IWM interventions, the discharge of the water had shown an increasing trend while sediment yield showed a decreasing trend from the base year. Therefore, IWM is a suggested approach to improve natural resource management and to sustain the livelihood of the community.
doi:10.19080/ijesnr.2021.27.556204 fatcat:epid5trt7jaylhltbuo3gte3bi