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Participatory assessment of soil erosion severity and performance of mitigation measures using stakeholder workshops in Koga catchment, Ethiopia

机译:通过在埃塞俄比亚科加集水区的利益相关方研讨会,对土壤侵蚀的严重程度和缓解措施的效果进行参与式评估

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摘要

Farmers possess a wealth of knowledge regarding soil erosion and soil and water conservation (SWC), and there is a great demand to access it However, there has been little effort to systematically document farmers' experiences and perceptions of SWC measures. Sustainable Land Management (SLM) has largely evolved through local traditional practices rather than adoption based on scientific evidence. This research aimed to assess soil erosion and performance of different SWC measures from the farmers' perspective by documenting their perceptions and experiences in Koga catchment, Ethiopia. To this aim, workshops were organised in three sub-catchments differing in slopes and SWC measures. Workshops included group discussions and field monitoring of erosion indicators and systematically describing the status of soil erosion, soil fertility and yield to assess the performance of SWC measures. Results show that farmers are aware of the harmful effects of ongoing soil erosion and of the impacts of mitigation measures on their farms. Sheet erosion was found to be the most widespread form of erosion while rill damage was critical on plots cultivated to cereals on steep slopes. The average rill erosion rates were 24.2 and 47.3 t/ha/y in treated and untreated farmlands, respectively. SWC reduced rill erosion on average by more than 48%. However, the impacts of SWC measures varied significantly between sub-watersheds, and farmers believed that SWC measures did not prevent erosion completely. Comparatively, graded stone-faced soil bunds revealed maximum desired impacts and were most appreciated by farmers, whereas level bunds caused water logging. Most traditional ditches were highly graded and begun incising and affected production of cereals. Despite the semi-quantitative nature of the methodology, using farmers' perceptions and experiences to document land degradation and the impacts of SWC measures is crucial as they are the daily users of the land and therefore directly affecting the success or failure of SWC measures.
机译:农民对水土流失和水土保持(SWC)拥有丰富的知识,对其的需求很大。但是,很少有人努力系统地记录农民对SWC措施的经验和看法。可持续土地管理(SLM)在很大程度上是通过当地的传统做法发展而来的,而不是根据科学证据而采用的。这项研究旨在通过记录农民在埃塞俄比亚科加集水区的看法和经验,从农民的角度评估水土流失和不同SWC措施的效果。为此,在三个子集水区组织了讲习班,每个子集水区的坡度和SWC措施不同。讲习班包括小组讨论和侵蚀指标的现场监测,并系统地描述了土壤侵蚀的状况,土壤肥力和产量,以评估SWC措施的绩效。结果表明,农民意识到持续的水土流失的有害影响以及缓解措施对其农场的影响。人们发现,表层侵蚀是最普遍的侵蚀形式,而在陡坡上种植谷物的地块上,小溪损害至关重要。在经过处理和未经处理的农田中,平均小溪侵蚀率分别为24.2吨/公顷/年。 SWC平均将小溪侵蚀减少了48%以上。但是,SWC措施的影响在各小流域之间差异很大,农民认为SWC措施不能完全防止侵蚀。相比之下,分级的石面土堤显示出最大的预期影响,并且受到农民的最大赞赏,而平地堤引起了涝灾。大多数传统的沟渠都经过高度分级,并开始切割并影响谷物的生产。尽管该方法具有半定量性质,但使用农民的看法和经验来记录土地退化和SWC措施的影响至关重要,因为他们是土地的日常使用者,因此直接影响SWC措施的成败。

著录项

  • 来源
    《Journal of Environmental Management》 |2018年第1期|230-242|共13页
  • 作者单位

    Wageningen University and Research Centre, Soil Physics and land Management Croup, 6700 AA, Wageningen, The Netherlands,Bahir Dar University, College of Agriculture and Environmental Science, P.O. Box 5501, Bahir Dar, Ethiopia;

    Wageningen University and Research Centre, Soil Physics and land Management Croup, 6700 AA, Wageningen, The Netherlands;

    Wageningen University and Research Centre, Soil Physics and land Management Croup, 6700 AA, Wageningen, The Netherlands;

    Wageningen University and Research Centre, Soil Physics and land Management Croup, 6700 AA, Wageningen, The Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Erosion; Stakeholder workshop; Local experience; Soil and water conservation; Performance assessment;

    机译:侵蚀;利益相关者研讨会;当地经验;水土保持;绩效评估;
  • 入库时间 2022-08-17 13:31:52

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