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Water 2018, 10(10), 1446; https://doi.org/10.3390/w10101446

New Patterns of Temporal and Spatial Variation in Water Quality of a Highly Artificialized Urban River-Course—a Case Study in the Tongzhou Section of the Beiyun River

1
College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2
College of Hydropower and information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
3
Hydrology Bureau of Shanxi Province, Taiyuan 030001, China
4
College of Natural Resources and Environment and Tourism, Beijing Normal University, Beijing 010000, China
*
Authors to whom correspondence should be addressed.
Received: 17 July 2018 / Revised: 5 October 2018 / Accepted: 11 October 2018 / Published: 13 October 2018
(This article belongs to the Section Water Quality and Ecosystems)
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Abstract

This paper aims to gain a better understanding of urban river pollution through evaluation of water quality. Data for 10 parameters at eight sites of the Tongzhou Section of the Beiyun River (TSBR) are analyzed. Hierarchical cluster analysis, fuzzy comprehensive assessment, discriminant analysis and Spearman’s correlation analysis were used to estimate the water situation of each cluster and analyze its spatial-temporal variations. Principal component analysis/factor analysis were applied to extract and recognize the sources responsible for water-quality variations. The results showed that temporal variation is greater than spatial and sewage discharge is the dominant factor of the seasonal distribution. Moreover, during the rapid-flow period, water quality is polluted by a combination of organic matter, phosphorus, bio-chemical pollutants and nitrogen; during the gentle-flow period, water quality is influenced by domestic and industrial waste, the activities of algae, aquatic plants and phosphorus pollution. In regard to future improvement of water quality in TSBR, the control of reclaimed wastewater from adjacent factories should first be put in place, as well as other techniques, for example, an increase of the impervious area, low-impact development, and integrated management practices should also be proposed in managing storm water runoff. View Full-Text
Keywords: Tongzhou Section of the Beiyun River; multivariate statistical analysis; fuzzy comprehensive assessment; urban river-course; spatial and temporal variations Tongzhou Section of the Beiyun River; multivariate statistical analysis; fuzzy comprehensive assessment; urban river-course; spatial and temporal variations
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Ren, J.; Liang, J.; Ren, B.; Zheng, X.; Guo, C. New Patterns of Temporal and Spatial Variation in Water Quality of a Highly Artificialized Urban River-Course—a Case Study in the Tongzhou Section of the Beiyun River. Water 2018, 10, 1446.

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