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首页> 外文期刊>Arabian Journal for Science and Engineering >Desertification Risk Assessment of Sand Dunes in Middle Egypt: A Geotechnical Environmental Study
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Desertification Risk Assessment of Sand Dunes in Middle Egypt: A Geotechnical Environmental Study

机译：埃及中部沙丘沙漠化风险评估：岩土环境研究

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摘要

The evaluation of aeolian desertification of sand dunes in north Assuit, Middle Egypt, has been achieved throughout a variety of detailed field investigations and laboratory measurements. The study area lies in hot dry desert climatic conditions where the sand dunes migration represents an effective threat cultivated lands, reclaimed lands, asphaltic roads and the systems of human distribution. Its mean annual rainfall is about 51 mm. Except the Nile Valley, Egypt is mostly considered as dry desert lands so about 4% of its surface area is under plough. The study barchans are mainly composed of poorly graded sands and consist of fine sand, medium sand and a negligible amount of coarse sand, silts and clays. Compositionally, the studied sand dunes are mainly consist of quartz, rock fragments and negligible amounts of feldspars with the absence of any chemically active constitutes (e.g. chert, flint, chalcedony and dolomite). These sands are also free of organic matter. The removal of dune sands in hazardous sites considers a short-term solution method of the aeolian desertification problem.
机译：通过各种详细的现场调查和实验室测量，已经完成了对埃及中部北部阿萨斯地区沙丘的风沙沙漠化的评估。研究区域位于干燥干旱的沙漠气候条件下，沙丘的迁移对耕地，开垦土地，柏油路和人类分布系统构成了有效威胁。年平均降雨量约为51 mm。除尼罗河谷外，埃及大部分地区被视为干旱的沙漠土地，因此约有4％的土地处于耕pl状态。研究的杂物主要由低品位的沙子组成，由细砂，中砂和少量的粗砂，粉砂和粘土组成。从组成上讲，研究的沙丘主要由石英，岩石碎片和少量的长石组成，没有任何化学活性成分（例如constitute石，石，玉髓和白云石）。这些沙子也不含有机物。在危险场所清除沙丘沙尘是解决风沙荒漠化问题的一种短期解决方法。

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