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Analysis of water and soil conservation techniques at the Ain Sefra arid watershed (Ksour Mountains, southwest Algeria)
Environmental Monitoring and Assessment ( IF 2.9 ) Pub Date : 2021-01-06 , DOI: 10.1007/s10661-020-08842-w
Ahmed Melalih , Mohamed Mazour

In Algeria, the arid steppe watershed currently suffers from serious environmental problems, including land degradation, poor water resource management, soil conservation, and land cover management. This situation is manifested by several events such as soil erosion, depletion of water resources, and loss of biodiversity, which are partly related to the acceleration of the soil degradation process. In order to improve the functioning of ecosystems in these watersheds, public authorities and farmers have undertaken restoration and protection efforts through land-use planning programs. The objective of this study is to test the stability, reliability, and anti-erosion effectiveness of these anti-erosion developments that currently exist on three sites, Sfissifa, Belguered, and Ain Sefra, in the face of the exceptional extreme rainfall events recorded especially in 2007–2008 (250 mm), both on cultivated land and in pasture and forest areas. We found that the traditional techniques generally used by farmers (terraces, stone cordons, toub walls, use of manure, cultivation in tanks and on ridges) have a great positive impact on water and soil conservation at the level of the cultivated plots. In addition, the modern techniques developed by the State (torrential correction, hill retention, reforestation) have proved to be very useful for water and soil conservation on a large scale, i.e., at the level of watersheds. This combination of these two types of development is almost indispensable to ensure a very positive impact on land productivity and the reduction of the risk of degradation.



中文翻译:

Ain Sefra干旱流域(阿尔及利亚西南库苏尔山)水土保持技术分析

在阿尔及利亚,干旱的草原流域目前面临严重的环境问题,包括土地退化,水资源管理不善,土壤保持和土地覆盖管理。这种情况表现为土壤侵蚀,水资源枯竭和生物多样性丧失等若干事件,部分与加速土壤退化过程有关。为了改善这些流域的生态系统功能,公共当局和农民通过土地利用规划方案进行了恢复和保护工作。这项研究的目的是测试目前在三个地点Sfissifa,Belguered和Ain Sefra的这些抗腐蚀开发物的稳定性,可靠性和抗腐蚀效果,面对特别是在2007-2008年(250毫米)记录在耕地以及牧场和森林地区的异常极端降雨事件。我们发现,农民普遍使用的传统技术(梯田,石警戒线,土墙,肥料的使用,在坦克和山脊上的耕作)对耕地水平上的水土保持有很大的积极影响。此外,事实证明,国家开发的现代技术(洪流矫正,保山,重新造林)对于大规模(即在流域一级)的水土保持非常有用。这两种发展的结合几乎是必不可少的,以确保对土地生产力产生非常积极的影响并降低退化的风险。无论是在耕地上还是在牧场和森林地区。我们发现,农民普遍使用的传统技术(梯田,石警戒线,土墙,肥料的使用,在坦克和山脊上的耕作)对耕地水平上的水土保持有很大的积极影响。此外,事实证明,国家开发的现代技术(洪流矫正,保山,重新造林)对于大规模(即在流域层面)的水土保持非常有用。这两种发展的结合几乎是必不可少的,以确保对土地生产力产生非常积极的影响并降低退化的风险。无论是在耕地上还是在牧场和森林地区。我们发现,农民普遍使用的传统技术(梯田,石警戒线,土墙,肥料的使用,在坦克和山脊上的耕作)对耕地水平上的水土保持有很大的积极影响。此外,事实证明,国家开发的现代技术(洪流矫正,保山,重新造林)对于大规模(即在流域一级)的水土保持非常有用。这两种发展方式的结合几乎是必不可少的,以确保对土地生产力产生非常积极的影响并降低退化的风险。粪便的使用,在水箱和山脊上的耕作)对耕地水平的水土保持有很大的积极影响。此外,事实证明,国家开发的现代技术(洪流矫正,保山,重新造林)对于大规模(即在流域一级)的水土保持非常有用。这两种发展的结合几乎是必不可少的,以确保对土地生产力产生非常积极的影响并降低退化的风险。粪便的使用,在水箱和山脊上的耕作)对耕地水平的水土保持有很大的积极影响。此外,事实证明,国家开发的现代技术(洪流矫正,保山,重新造林)对于大规模(即在流域一级)的水土保持非常有用。这两种发展的结合几乎是必不可少的,以确保对土地生产力产生非常积极的影响并降低退化的风险。事实证明,这对于大规模的水土保持非常有用,即在集水区。这两种发展的结合几乎是必不可少的,以确保对土地生产力产生非常积极的影响并降低退化的风险。事实证明,这对于大规模的水土保持非常有用,即在集水区。这两种发展的结合几乎是必不可少的,以确保对土地生产力产生非常积极的影响并降低退化的风险。

更新日期:2021-01-06
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