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首页> 外文期刊>Polish Journal of Environmental Studies >GIS-based Study on the Susceptibility of Dubai Creek (UAE) to Eutrophication
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GIS-based Study on the Susceptibility of Dubai Creek (UAE) to Eutrophication

机译：基于GIS的迪拜河（UAE）富营养化敏感性研究

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摘要

Rapid urbanization in the UAE has led to some environmental implications, one of which concerns Dubai Creek - a major attraction in the city of Dubai. The creek's water quality monitoring program showed increased concentrations of phosphorus-and nitrogen-based nutrients starting in 2008 and 2009. The creek has since been through redundant eutrophication, which has been attributed to the high levels of nutrients in addition to the creek's poor flushing and irregular circulation processes. The aim of this study was to (a) assess the susceptibility of the creek to eutrophication considering its principal factors, and (b) to identify the pattern of this process (i.e., seasonal, cyclic, etc.). Principal component analysis was used to identify the principal factors from nitrates, phosphates, total nitrogen, chlorophyll-a, dissolved oxygen, and turbidity, which were collected as quarterly averages in 2012 and 2013. Logistic regression was utilized to assess the susceptibility of the creek to eutrophication considering the principal factors obtained by PCA. The analysis showed that three different factors, which included at least nitrates or phosphates, have contributed to eutrophication in every quarter of the year in the period of study. Further analysis showed weak correlation between principal factors of eutrophication in consecutive quarters. However, strong correlations were observed between these factors when the same quarters over the period of the study were considered, suggesting a possible seasonal pattern.
机译：阿联酋的快速城市化带来了一些环境影响，其中之一涉及迪拜河-迪拜市的主要吸引力。小溪的水质监测程序显示，从2008年和2009年开始，磷和氮基营养素的浓度增加。小溪一直以来都是富营养化，这归因于小溪的冲水和排泄能力差，此外还有大量营养素不规则的循环过程。这项研究的目的是（a）考虑其主要因素来评估小溪对富营养化的敏感性，以及（b）确定这一过程的模式（即季节性，周期性等）。主成分分析用于确定硝酸盐，磷酸盐，总氮，叶绿素a，溶解氧和浊度的主要因素，这些因素在2012年和2013年作为季度平均值收集。采用逻辑回归分析评估小溪的敏感性考虑PCA获得的主要因素来进行富营养化。分析表明，在研究期间的每个季度中，至少包括硝酸盐或磷酸盐的三种不同因素都导致了富营养化。进一步的分析显示，连续两个季度的富营养化主要因素之间的相关性较弱。但是，当考虑研究期间的相同季度时，在这些因素之间观察到强相关性，这表明可能是季节性的。

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