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Investment in small scale irrigation (SSI) is crucial to sustain food security and livelihoods of smallholders. In Ethiopia, the government and development partners show a growing interest in developing irrigation projects. The success of irrigation projects is determined by governance and socio-cultural contexts. Yet the lack of thorough understanding of the challenging contexts undermines the efforts to achieve sustainability outcomes in irrigation projects. This article identifies the challenging contexts to irrigation projects, examines how the challenging contexts influence the effectiveness of irrigation projects, and indicates ways of improving the effectiveness of irrigation projects under the existing challenging contexts. Data were collected between April and December 2011 in three regional states of Ethiopia using in-depth interviews and focus group discussions. The lack of governance capacity and accountability are critical challenges for the sustainability of the irrigation projects. In addition, the poor consideration of local knowledge and the use of top-down approaches in planning and implementing the irrigation projects, and lack of equitable access to the irrigation schemes result in poor ownership of projects among farmers. Improving the funding scheme to support long-term capacity building at national and local levels, and in understanding the socio-cultural contexts of the intervention areas; planning irrigation projects with due consideration of the existing challenging contexts, and with active engagement of the local community, are important for the long-term viability and sustainability of irrigation projects.  相似文献   
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Communities in Tigray, Northern Ethiopia, have established exclosures on formerly degraded grazing lands and other land uses to promote natural regeneration of plants. Village bylaws devised by communities govern the management of exclosures. We analysed the effectiveness of village bylaws that are used to manage exclosures in addressing forest degradation, resolving conflicts among users over natural resource use, and meeting high expectations of users to realise economic benefits from exclosures through enhancing revenue from sale of grass and dry wood. We collected data using qualitative methods during July and November 2008 in two villages of Tigray. The village bylaws mitigated forest degradation by facilitating users to have common goals in the management of exclosures, and resolved conflicts among users by using monetary sanctions including penalties. The village bylaws were not effective in meeting the high expectations of users to realise economic benefits from exclosures. In some cases, the enforcement of village bylaws was constrained by high social capital, which resulted in the negligence among users in exposing free riders. This indicates that high social capital does not always enhance communal resource management. Moreover, recurrent drought, shortage of fuel wood, and the growing number of landless youths in both villages constrained the effectiveness of village bylaws and further expansion of exclosures. Village committees should focus on addressing the low level of rule enforcement and minimise negligence among users of exclosures through developing a sense of responsibility among users rather than focusing on penalties.  相似文献   
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