Modeling and mapping of water erosion in northeastern Algeria using a seasonal multicriteria approach
Modeling and mapping of water erosion in northeastern Algeria using a seasonal multicriteria approach
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使用季节性多标准方法对阿尔及利亚东北部的水侵蚀进行建模和绘图
DOI：
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发表时间：
2014
影响因子：
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通讯作者：
Abdelkader Hamlat
中科院分区：
文献类型：
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作者：
Azeddine Guidoum;Abdelmalek Nemouchi;Abdelkader Hamlat
奥雷斯地区仍然是阿尔及利亚最容易遭受水蚀现象的地区之一，因为气候具有强烈的侵略性，地形崎岖，敏感土地占主导地位，植被没有发挥保护作用。本文是为保护该地区的农业和水利基础设施而进行的研究的一部分。本研究的主要目的是在Oued Chemoura流域，代表的Aurès的侵蚀危害的制图建模。建模方法使用地理信息系统，并结合了以下六个因素控制侵蚀：坡度，脆弱性的基板，土壤的可蚀性，土地覆盖，降雨侵蚀力，和支持的做法。结果显示了土壤侵蚀危害的综合地图，其中定位了最受威胁的地区和可能的规划干预的优先事项。对固液两相流动关系进行了统计研究。1969-1994年期间在Chemoura站进行的测量就是为此目的而进行的。结果表明，特定的降解率很高，在50至360吨km−2季节-1之间。
Aurès region remains one of the most exposed areas to water erosion phenomenon in Algeria, because of the strong climatic aggressiveness, the rugged relief, the predominance of sensitive land, and a vegetative cover that does not play its protective role. This article is a part of studies performed to protect agricultural and water infrastructure in this region. The main objective of this study is the cartographic modeling of an erosion hazard at the Oued Chemoura watershed, representative of the Aurès. The modeling approach uses a geographic information system and incorporates the following six factors controlling erosion: slope, friability of substrate, erodibility of soils, land cover, rainfall erosivity, and support practices. Result shows a synthetic map of the soil erosion hazard which locates the most threatened areas and priorities for possible planning interventions. A statistical study on the relationship solid–liquid flow was developed. Measurements conducted at the station of Chemoura, over the period 1969–1994, were exploited for this purpose. The results show a high specific degradation varying between 50 and 360 tons km−2 season−1.