GIS-Based Study on the Environmental Sensitivity to Pollution and Susceptibility to Eutrophication in Burullus Lake, Egypt

IF 2 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Marine Geodesy Pub Date : 2021-07-27 DOI:10.1080/01490419.2021.1954111

M. El-Alfy, Dina H. Darwish, Afifi I. Basiony, A. Elnaggar

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引用次数: 3

Abstract

Abstract Sensitivity to pollution in Burullus Lake was estimated based on the proximity analysis. The category of sensitivity was based on six factors including: agricultural areas, industrial areas, drains, Elboughaz, urban areas and fish farms. A statistical model was developed to estimate trophic state index (TSI) based on laboratory measurements of water samples at two different periods of time (Mach 2020 and June 2020) (R2 = 0.96 and 0.94, respectively). The important factors that were considered at the first period were chlorophyll, phosphate PO4 and oxidizable organic matter OOM. In the second period, the considered factors were ammonia NH4, silicates SiO4, and dissolved oxygen (DO). The category of TSI varied from oligotrophic to hyper-eutrophic conditions in March 2020, whereas it varied from eutrophic to hyper-eutrophic in June 2020. The eutrophication condition was higher in June than in March. This may be attributed to the huge amount of wastewaters, their contaminant load and season. The compatibility between sensitivity model and the obtained results in March 2020 was about 54.5%, whereas it was about 27.3% in June 2020. This reveals that the lake is highly sensitive to pollution and therefore it needs to be monitored regularly.

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基于gis的埃及布鲁勒斯湖环境污染敏感性及富营养化敏感性研究

摘要基于邻近度分析对布鲁勒斯湖的污染敏感性进行了评价。敏感性类别基于六个因素，包括:农业区、工业区、排水沟、埃尔布格兹、城市地区和养鱼场。基于2020马赫和2020年6月两个不同时期水样的实验室测量数据，建立了营养状态指数(TSI)的统计模型(R2分别= 0.96和0.94)。第一阶段主要考虑叶绿素、磷酸PO4和可氧化有机质OOM。在第二个阶段，考虑的因素是氨NH4、硅酸盐SiO4和溶解氧(DO)。2020年3月，TSI的类型从贫营养到超富营养，而2020年6月，TSI从富营养到超富营养。6月份富营养化程度高于3月份。这可能是由于大量的废水，其污染物负荷和季节。敏感性模型与2020年3月所得结果的相容性约为54.5%，而2020年6月的相容性约为27.3%。这表明该湖对污染非常敏感，因此需要定期监测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine Geodesy 地学-地球化学与地球物理

CiteScore

4.10

自引率

6.20%

发文量

审稿时长

>12 weeks

期刊介绍： The aim of Marine Geodesy is to stimulate progress in ocean surveys, mapping, and remote sensing by promoting problem-oriented research in the marine and coastal environment. The journal will consider articles on the following topics: topography and mapping; satellite altimetry; bathymetry; positioning; precise navigation; boundary demarcation and determination; tsunamis; plate/tectonics; geoid determination; hydrographic and oceanographic observations; acoustics and space instrumentation; ground truth; system calibration and validation; geographic information systems.