Wells and land use changes in Dakhla Oasis (Egypt) using geospatial analysis: case study of Rashda village
Wells and land use changes in Dakhla Oasis (Egypt) using geospatial analysis: case study of Rashda village
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使用地理空间分析的达赫拉绿洲（埃及）水井和土地利用变化：拉什达村案例研究
DOI：
10.1007/s41207-020-00202-x
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发表时间：
2020
影响因子：
2
通讯作者：
E.A
中科院分区：
文献类型：
--
作者：
Iwasaki;E.;Elbeih;S.;Shalaby;A.;Khedr;H.;Zaghloul;E.A
自世纪中期以来，埃及干旱地区的深层地下水威尔斯井的数量大大增加。随着1958年新山谷项目的开始，使用旋转钻机和抽水试验的现代钻井技术来到埃及，大大增加了排水量。本文以达赫拉绿洲的Rashda村为例，记录了钻井技术的发展和应用导致的农业用地的扩大。所使用的材料包括1968年至2018年的卫星图像，以及从实地考察和政府报告中获得的地下水井数据。分析表明，在过去50年（1968-2018年）中，土地利用/覆盖发生了巨大变化，1988年至2003年期间，由于钻井加速，农业用地扩张最大。出现的复杂现象之一是排水池从1968年的15.6公顷增加到2018年的194.4公顷，其中排水池的增长与农业用地的快速增加相关（1998-2003年）。在过去的二十年里，拉什达村一直面临着人口增长和农业、家庭、工业和机构用水需求增加的持续压力。然而，这种发展一直在继续，没有注意到其可持续性。
The number of deep groundwater wells in the arid lands of Egypt has increased greatly since the mid-twentieth century. Modern well drilling technology using rotary drilling rigs and pumping tests came to Egypt with the beginning of the New Valley Project in 1958, bringing significantly increased water discharge. Taking Rashda Village in Dakhla Oasis as a case study, this paper documents the expansion of agricultural lands as a result of the development and application of well drilling technologies. The materials used include satellite images from 1968 until 2018, and groundwater well data obtained from field visits and governmental reports. The analysis makes clear that there has been a huge change in land use/cover over the past 50 years (1968–2018) with the largest expansion of agricultural lands occurring between 1988 and 2003 driven by acceleration in well drilling. One of the complex phenomena that appeared is the increase in drainage ponds from 15.6 ha in 1968 to 194.4 ha in 2018 where growth of drainage ponds was correlated with the rapid increase in agricultural lands (1998–2003). In the past two decades, Rashda village has been under continuous pressure from population growth and increasing water demand for agricultural, domestic, industrial, and institutional uses. However, the development has continued without attention to its sustainability.