Trophic State Index for Euphrates River Passing Through Samawa City

IF 0.7 Q4 ENVIRONMENTAL SCIENCES

Asian Journal of Water, Environment and Pollution Pub Date : 2022-07-26 DOI:10.3233/ajw220062

Ansam Saad Al-Khafaji, I. Al-Taee

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引用次数: 1

Abstract

This study is conducted in order to investigate the trophic state index of Euphrates River flowing through the Samawa city. The present study includes monthly samples collected from three sites (S1: before the Euphrates river enter Samawa center, S2: is located in the Centre of Samawa city, S3: is located at the south of the second site) during the period from April to September, 2020. The study included measurement of some physical and chemical parameters such as Secchi disc, Chlorophyll-a- and total phosphorus. The results showed that TSI (Chl-a) ranging between 4.97-39.39, TSI (SD) ranged between 45.94-81.84, TSI (TP) between 5.81-21.82 and CTSI between 26.18-45.87 with maximum value in September and lowest value in July. The average physiochemical parameters (+-standard deviation) were 7.32 (0.42), 2627.22 (583.94), 5.69 (1.06), 9.5 (3.43), 5.15 (2.05), 1.70 (0.96), 0.57 (0.27), 157.5 (11.69), 1323.88 (259.41), respectively for pH, EC, DO, BOD5, NO3, NO2, PO4, TA, and TDS. Euphrates River is classified as mesotrophic by the CTSI. Statistical analysis showed that positive correlation (p-value 0.01) between the index and (Chl-a-, TP, SD, pH and total alkalinity) while other parameters did not have any correlation with the index. TSI can be used as a baseline for trophic comparisons between the numerous chemical and biological elements of rivers that are connected to trophic status.

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幼发拉底河流经萨马马市的营养状态指数

为了调查流经萨马瓦市的幼发拉底河的营养状态指数，本文进行了研究。本研究包括在2020年4月至9月期间从三个地点(S1:幼发拉底河进入萨马瓦中心之前，S2:位于萨马瓦市中心，S3:位于第二个地点的南部)每月采集的样本。该研究包括对赛奇盘、叶绿素-a和总磷等理化参数的测定。结果表明:TSI (Chl-a)在4.97 ~ 39.39之间，TSI (SD)在45.94 ~ 81.84之间，TSI (TP)在5.81 ~ 21.82之间，CTSI在26.18 ~ 45.87之间，9月最大值，7月最小。pH、EC、DO、BOD5、NO3、NO2、PO4、TA、TDS的平均理化参数(+标准差)分别为7.32(0.42)、2627.22(583.94)、5.69(1.06)、9.5(3.43)、5.15(2.05)、1.70(0.96)、0.57(0.27)、157.5(11.69)、1323.88(259.41)。幼发拉底河被CTSI分类为中营养型。统计分析表明，该指数与(Chl-a-、TP、SD、pH、总碱度)呈正相关(p值0.01)，其他参数与该指数无相关性。TSI可以用作与营养状况相关的河流中众多化学和生物元素之间营养比较的基线。

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

Asian Journal of Water, Environment and Pollution ENVIRONMENTAL SCIENCES-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Asia, as a whole region, faces severe stress on water availability, primarily due to high population density. Many regions of the continent face severe problems of water pollution on local as well as regional scale and these have to be tackled with a pan-Asian approach. However, the available literature on the subject is generally based on research done in Europe and North America. Therefore, there is an urgent and strong need for an Asian journal with its focus on the region and wherein the region specific problems are addressed in an intelligent manner. In Asia, besides water, there are several other issues related to environment, such as; global warming and its impact; intense land/use and shifting pattern of agriculture; issues related to fertilizer applications and pesticide residues in soil and water; and solid and liquid waste management particularly in industrial and urban areas. Asia is also a region with intense mining activities whereby serious environmental problems related to land/use, loss of top soil, water pollution and acid mine drainage are faced by various communities. Essentially, Asians are confronted with environmental problems on many fronts. Many pressing issues in the region interlink various aspects of environmental problems faced by population in this densely habited region in the world. Pollution is one such serious issue for many countries since there are many transnational water bodies that spread the pollutants across the entire region. Water, environment and pollution together constitute a three axial problem that all concerned people in the region would like to focus on.