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首页> 外文会议>PIAGENG 2013: intelligent information, control, and communication technology for agricultural engineering >Sand dunes monitoring using remote sensing and GIS techniques for some sites in Iraq
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Sand dunes monitoring using remote sensing and GIS techniques for some sites in Iraq

机译：使用遥感和GIS技术对伊拉克某些站点的沙丘进行监控

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This study is aimed at monitoring, mapping and assessing the sand dune encroachment in the northern central part of Iraq. The study area includes six districts suffering from the increasing prevalence of sand dunes, particularly in the recent years, which are characterized by dry weather and a reduction in rainfall averages. Remote sensing "RS" and in particular, Earth observation satellites besides Geographical Information Systems "GIS" provide significant contributions to monitoring sand dunes encroachment. Two Landsat TM images acquired on July of 1988, and July of 2009 were assembled and used to extract the research indices. Satellite image based indices; the Normalized Difference Vegetation Index "NDVI", the Tasseled Cap Wetness Indicator "TCW", the Land Surface Temperature "LST", and the Normalized Difference Sand Index "NDSI" (a new index which has been proposed in this study) with RS and GIS techniques were used for monitoring the sand dune encroachment at two sites in the northern central part of Iraq. The results showed an increase in the sand dunes accumulations by 2,020.6 km~2 and 291.1 km~2 throughout the 21 years from 1988 to 2009 in Baiji and Al-Aith sites in the region, respectively. Sand dunes movement rates for the same period were 1,155.9 m year~(-1) and 494.2 m year~(-1) in the two mentioned sites, respectively. The results showed that the study area in general is exposed to a high risk of sand dune encroachment. The means of soil conditioners and windbreaks has been proposed to mitigate the impacts of sand dune encroachment.
机译：这项研究旨在监测，测绘和评估伊拉克北部中部地区的沙丘侵蚀。研究区域包括六个地区，尤其是近年来，沙丘患病率上升，这些地区的特点是干燥的天气和平均降雨量的减少。遥感“ RS”，特别是除地理信息系统“ GIS”之外的地球观测卫星，为监测沙丘的侵占做出了重要贡献。分别收集了1988年7月和2009年7月获得的两幅Landsat TM图像，并用于提取研究指标。基于卫星图像的索引；植被指数标准化植被指数“ NDVI”，流沙帽湿度指示器“ TCW”，地表温度“ LST”和标准化差异沙土指数“ NDSI”（本研究中已提出的新指标），RS和地理信息系统技术用于监测伊拉克北部中部两个地点的沙丘侵蚀。结果表明，从1988年到2009年的21年间，该地区的Baiji和Al-Aith站点的沙丘积累量分别增加了2,020.6 km〜2和291.1 km〜2。在上述两个地点，同期的沙丘移动速率分别为1155.9万年（-1）和494.2m年（-1）。结果表明，研究区域总体上容易遭受沙丘侵蚀的风险。已经提出了土壤改良剂和防风林的方法以减轻沙丘侵蚀的影响。

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