基于指数法和地统计学方法的湖泊健康营养分类与评价

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-03-22 DOI:10.2166/wpt.2023.039
Nilabhra Auddy, A. Rai, S. Chatterjee, K. Pobi, S. Dutta, S. Nayek
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引用次数: 0

摘要

本研究通过实地调查,分析了该地区高寒湖泊的水质、营养状况和有机污染的时空变化趋势,并采用多变量分析方法对其进行了综合分析。经分析的水参数显示出显著的季节变化,在内陆地表水可接受的范围内。在季风前,水质指数(WQI)和有机污染指数(OPI)值显示出“差”到“严重污染”的状态,在季风后的研究中,情况略有好转。在调查期间,营养状态指数(tsi)值显示为“富营养化到高度富营养化”状态。主成分分析的结果描述了控制湖泊水系统整体污染水平的三个主要决定因素(即人为贡献、地质或风化以及季节/气候因素)。目前的研究有可能成为评估和实施这一新生高山生态系统管理和恢复措施的基准。
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Trophic classification and assessment of lake health using indexing approach and geostatistical methods for sustainable management of water resources
This study aims to analyse the spatio-temporal trends in water quality, trophic state, and organic contamination of an alpine lake in the Darjeeling Himalaya through field investigations and to portray a comprehensive picture using multivariate analysis. Analysed water parameters have shown notable seasonal variations and were within the acceptable range for inland surface water. Water quality index (WQI) and organic pollution index (OPI) values have displayed ‘poor’ to ‘heavily polluted’ status in the pre-monsoon season, with marginally better conditions during the post-monsoon studies. Trophic state indices (TSIs) values revealed ‘eutrophic to highly eutrophic’ conditions during the investigation period. The results of the PCA have depicted three major determining factors (i.e., anthropogenic contribution, geogenic or weathering, and seasonal/climatic factors) that control the overall pollution level in the lake water system. The current study can potentially be a benchmark for assessing and undertaking management and restoration measures for this nascent alpine ecosystem.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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