Mapping Changes of Water Quality Parameters Pattern in Anzali International Wetland Using Remote Sensing

Q3 Environmental Science

Journal of Water and Environment Technology Pub Date : 2021-01-01 DOI:10.2965/JWET.20-114

A. P. Zefrehei, A. Hedayati, M. Fallah

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引用次数: 2

Abstract

In this study, the environmental monitoring of Anzali international wetland (based on water surface temperature (WST), chlorophyll - a (Chl-a) and transparency (secchi disk depth (SDD)) parameters) using Landsat images in the period 1985–2018 has been studied. Based on the results of zoning maps, in 2018 and 2013, WST fluctuations are higher, with the lowest water temperature observed in 2007. Based on Chl-a, the trend for this parameter is increasing from 1985 to 2018. Also, from 1985 to 2018, we saw a decrease in transparency (SDD), which could indicate an increase in opacity and concentration of suspended and organic particles in the wetland, which was consistent with the results of chlorophyll - a. Graph examination of wetland showed more changes belonged to the central and eastern parts of the wetland. The results of this study indicate that in the Anzali international wetland, comparing the values of the parameters studied, there are not good conditions for water quality and the need for a solution and management policies to improve the condition of this unique ecosystem is necessary more than ever.

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安扎里国际湿地水质参数格局的遥感制图变化

利用1985-2018年Landsat影像对安扎里国际湿地进行了基于水面温度(WST)、叶绿素-a (Chl-a)和透明度(secchi disk depth (SDD))参数的环境监测。根据分区图的结果，2018年和2013年，WST波动较大，2007年的水温最低。基于Chl-a，该参数从1985年到2018年呈增加趋势。此外，从1985年到2018年，我们看到了透明度(SDD)的下降，这可能表明湿地中悬浮物和有机颗粒的不透明度和浓度增加，这与叶绿素- a的结果一致。湿地图检验显示，湿地的变化更多地属于湿地的中部和东部。本研究结果表明，在安扎里国际湿地，比较研究参数的值，水质条件不佳，比以往任何时候都更需要解决和管理政策来改善这一独特的生态系统状况。

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

Journal of Water and Environment Technology Environmental Science-Water Science and Technology

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

43 weeks

期刊介绍： The Journal of Water and Environment Technology is an Open Access, fully peer-reviewed international journal for all aspects of the science, technology and management of water and the environment. The journal’s articles are clearly placed in a broader context to be relevant and interesting to our global audience of researchers, engineers, water technologists, and policy makers. JWET is the official journal of the Japan Society on Water Environment (JSWE) published in English, and welcomes submissions that take basic, applied or modeling approaches to the interesting issues facing the field. Topics can include, but are not limited to: water environment, soil and groundwater, drinking water, biological treatment, physicochemical treatment, sludge and solid waste, toxicity, public health and risk assessment, test and analytical methods, environmental education and other issues. JWET also welcomes seminal studies that help lay the foundations for future research in the field. JWET is committed to an ethical, fair and rapid peer-review process. It is published six times per year. It has two article types: Original Articles and Review Articles.