A Comparative Study for Provision of Environmental Flows in the Tapi River

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-08-12 DOI:10.3390/earth4030030

Jaini Umrigar, Darshan J. Mehta, T. Caloiero, H. Azamathulla, Vijendra Kumar

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Abstract

Environmental flows are defined as the flow required into a stream to maintain the river’s ecosystem. The notion of Environmental Flow Allocation (EFA) ensures that a sufficient amount of water is delivered to the stream to maintain ecological integrity. The objective of this study is to examine environmental flows and determine the best acceptable strategy for providing flows into the river in the Lower Tapi Basin. To achieve this objective, daily discharge data from three sites, Ukai (period 1975–2020), Motinaroli (period 1990–2021), and Ghala (period 1995–2005) were collected and analyzed using the Tennant, Tessman, variable monthly flow (VMF), and Smakhtin methodologies. A comparative analysis was carried out on all three sites using the four methodologies. The Tessman and VMF approaches have a strong connection with the computed environmental flow requirements (EFR), according to the results. The calculated EFR was found to be in the range of 30–35% of mean annual flows (MAF). The maximum EFR found at station Ghala is about 54.5% of MAF according to the Tessman method. Such research will help to prevent future degradation of the river by supplying flow in accordance with the EFR, and it will also be used by stakeholders and policymakers to allocate water to preserve the ecosystem.

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塔皮河环境流量供给的比较研究

环境流量被定义为维持河流生态系统所需的流量。环境流量分配(EFA)的概念确保了足够数量的水被输送到河流以保持生态完整性。本研究的目的是检查环境流量，并确定下塔皮盆地向河流提供流量的最佳可接受策略。为了实现这一目标，收集了Ukai(1975-2020年)、Motinaroli(1990-2021年)和Ghala(1995-2005年)三个站点的日排放数据，并使用Tennant、Tessman、可变月流量(VMF)和Smakhtin方法进行了分析。使用这四种方法对所有三个地点进行了比较分析。结果表明，Tessman方法和VMF方法与计算的环境流量要求(EFR)有很强的联系。计算出的EFR在年平均流量(MAF)的30-35%之间。根据Tessman方法，Ghala站最大EFR约为MAF的54.5%。这样的研究将有助于通过根据EFR提供流量来防止河流未来的退化，它也将被利益相关者和决策者用来分配水以保护生态系统。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.