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Assessing rangeland cover conversion in Jordan after the Arab spring using a remote sensing approach

机译:使用遥感方法评估阿拉伯之春后约旦的牧场覆盖转换

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The influence of population growth and Syrian refugee settlements on rangeland degradation in Jordan using remotely-sensed data was assessed. Eleven cloud-free Landsat 8 Operational Land Imager (OLI) Images that cover the study area were used. Maximum likelihood classifier was applied to estimate rangeland, cropland, urban, water and forest cover percentages over the study area for the period 2013-2015. Change detection analysis of both 2013 and 2015 images revealed a dramatic expansion of urban lands and a consequent reduction in rangelands, especially in north-western Jordan. Our analysis suggests that Jordanian rangeland area decreased by 9.6%, forests by 1.5% and water by 0.6% during the study period (2013-2015). Meanwhile, urban lands increased by 11.4% and croplands by 0.2%. We attributed this change mainly to Syrian civil war and refugee settlements. This settlement process increased the demand for food and water and accelerated desertification processes in Jordanian rangelands, especially those in the north-western region. Our study underscores the value of using remotely sensed data as a viable approach to quantify degradation in Middle Eastern rangelands. Overall, we suggest initiating rigorous urban settlement regulations and land conservation control programs to mitigate land degradation in Jordanian rangelands.
机译:使用遥感数据评估了人口增长和叙利亚难民定居点对约旦牧场退化的影响。使用了覆盖研究区域的11块无云Landsat 8作战陆地成像仪(OLI)图像。使用最大似然分类器来估算2013-2015年研究区域内的牧场,农田,城市,水和森林覆盖率。 2013年和2015年图像的变化检测分析显示,城市土地急剧扩张,牧场面积因此减少,特别是在约旦西北部。我们的分析表明,在研究期间(2013-2015年),约旦牧场面积减少了9.6%,森林减少了1.5%,水减少了0.6%。同时,城市土地增加了11.4%,耕地增加了0.2%。我们将此变化主要归因于叙利亚内战和难民定居点。这种定居过程增加了对食物和水的需求,并加快了约旦牧场特别是西北地区的荒漠化进程。我们的研究强调了使用遥感数据作为量化中东牧场退化的可行方法的价值。总体而言,我们建议启动严格的城市住区法规和土地保护控制计划,以减轻约旦牧场的土地退化。

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