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Water 2017, 9(9), 707; https://doi.org/10.3390/w9090707

Exploring the Spatial-Seasonal Dynamics of Water Quality, Submerged Aquatic Plants and Their Influencing Factors in Different Areas of a Lake

1
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
2
Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China
*
Authors to whom correspondence should be addressed.
Received: 5 June 2017 / Revised: 24 August 2017 / Accepted: 13 September 2017 / Published: 15 September 2017
(This article belongs to the Special Issue Water Quality Monitoring and Modeling in Lakes)
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Abstract

The degradation of water quality in lakes and its negative effects on freshwater ecosystems have become a serious problem worldwide. Exploring the dynamics in the associated factors is essential for water pollution management and control. GIS interpolation, principal component analysis (PCA) and multivariate statistical techniques were used to identify the main pollution sources in different areas of Honghu Lake. The results indicate that the spatial distribution of the concentrations of total nitrogen (TN), total phosphate (TP), ammonia nitrogen (NH4+–N), and permanganate index (CODMn) have similar characteristics and that their values gradually increased from south to north during the three seasons in Honghu Lake. The major influencing factors of water quality varied across the different areas and seasons. The relatively high concentrations of TN and TP, which might limit the growth of submerged aquatic plants, were mainly caused by anthropogenic factors. Our work suggests that spatial analyses combined with PCA are useful for investigating the factors that influence water quality and submerged aquatic plant biomass in different areas of a lake. These findings provide sound information for the future water quality management of the lake or even the entire lake basin. View Full-Text
Keywords: lake water quality; spatial and seasonal variations; influencing factors; biomass of submerged aquatic plant; different areas of Honghu Lake lake water quality; spatial and seasonal variations; influencing factors; biomass of submerged aquatic plant; different areas of Honghu Lake
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, K.; Wang, L.; Li, Z.; Xie, Y.; Wang, X.; Fang, Q. Exploring the Spatial-Seasonal Dynamics of Water Quality, Submerged Aquatic Plants and Their Influencing Factors in Different Areas of a Lake. Water 2017, 9, 707.

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