Relationship between Coliform Bacteria and Water Quality Factors at Weir Stations in the Nakdong River, South Korea
Relationship between Coliform Bacteria and Water Quality Factors at Weir Stations in the Nakdong River, South Korea
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DOI：
10.3390/w11061171
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发表时间：
2019-06-01
期刊：
影响因子：
3.4
通讯作者：
Kim, Yongseok
中科院分区：
文献类型：
--
作者：
Seo, Mijin;Lee, Haejin;Kim, Yongseok
在河流中设置人工构筑物，可以改变河流的自然物理、物理化学和生物特性。大肠菌群是重要的水质指标，关系到人体健康。本研究调查了大肠菌群和水质因素之间的关系，在八个堰站建在洛东江，在韩国的主要河流。从2012年到2016年，使用相关性和多元回归分析对这些站点的15个水质因子进行了分析。所有监测站的结果证实了分析的有效性，总大肠菌群和粪大肠菌群的高调整R-2值平均分别约为0.6和0.8。结果表明，影响堰站大肠菌群浓度的主要水质因素。总大肠菌群主要受有机物的影响，粪大肠菌群主要受磷酸盐、磷和悬浮物的影响。降雨是影响两种大肠菌群的最重要因素。此外，这两种大肠菌群都受到洛东江中下游地区达城堰以下有机物的负面影响。在所有堰站与磷酸盐磷呈正相关。据作者所知，迄今为止，这种研究从未尝试过。因此，研究结果可以提供有关大肠菌群的影响水质因素的重要信息，特别是在洛东江，为未来的水质管理奠定了基础。
Artificial structures installed in rivers can change the natural physical, physiochemical, and biological characteristics of the rivers. Coliform bacteria are important water quality indicators, related to human health. This study investigated the relationship between coliform bacteria and water quality factors at eight weir stations constructed in the Nakdong River, a major river in South Korea. Fifteen water quality factors were analyzed at these sites from 2012 to 2016 using correlation and multiple regression analyses. The results for all stations confirmed the analytical validity, with high adjusted R-2 values of approximately 0.6 and 0.8 on average for total and fecal coliforms, respectively. The results showed influential water quality factors affecting the concentration of coliform bacteria at weir stations. Specifically, total coliforms were mostly affected by organic matter and fecal coliforms were mostly affected by phosphate phosphorus and suspended solids. Rainfall was the most influential factor affecting both coliforms. Further, both coliforms were negatively affected by organic matter below the Dalseong weir in the mid- to downstream area of the Nakdong River. A positive relationship with phosphate phosphorus was indicated at all weir stations. To the authors' knowledge, this kind of study has never been attempted so far. Thus, the study results can provide important information on influential water quality factors related to coliform bacteria, especially in the Nakdong River, creating a foundation for future water quality management.