Next Article in Journal
Water Consumption of Agriculture and Natural Ecosystems along the Ili River in China and Kazakhstan
Next Article in Special Issue
Coupled Infiltration and Kinematic-Wave Runoff Simulation in Slopes: Implications for Slope Stability
Previous Article in Journal
The Impact of a Local Development Project on Social Capital: Evidence from the Bohol Irrigation Scheme in the Philippines
Previous Article in Special Issue
Decreased Streamflow in the Yellow River Basin, China: Climate Change or Human‐Induced?
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Water 2017, 9(3), 200; doi:10.3390/w9030200

Spatiotemporal Distribution of Eutrophication in Lake Tai as Affected by Wind

1
Chinese Research Academy of Environmental Sciences, Beijing 100012, China
2
Department of Civil and Environmental Engineering, Old Dominion University, Norfolk, VA 23529, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Kevin Strychar
Received: 17 October 2016 / Revised: 1 March 2017 / Accepted: 3 March 2017 / Published: 10 March 2017
(This article belongs to the Special Issue Water-Soil-Vegetation Dynamic Interactions in Changing Climate)
View Full-Text   |   Download PDF [9858 KB, uploaded 10 March 2017]   |  

Abstract

One common hypothesis is that wind can affect concentrations of nutrients (i.e., nitrogen and phosphorus) and chlorophyll-a (Chl-a) in shallow lakes. However, the tests of this hypothesis have yet to be conclusive in existing literature. The objective of this study was to use long-term data to examine how wind direction and wind speed affect the spatiotemporal variations of total nitrogen (TN), total phosphorus (TP) and Chl-a in Lake Tai, a typical shallow lake located in east China. The results indicated that the concentrations of nutrients and Chl-a tended to decrease from the northwest to the southeast of Lake Tai, with the highest concentrations in the two leeward bays (namely Meiliang Bay and Zhushan Bay) in the northwestern part of the lake. In addition to possible artificial reasons (e.g., wastewater discharge), the prevalent southeastward winds in warm seasons (i.e., spring and summer) and northwestward winds in cool seasons (i.e., fall and winter) might be the major natural factor for such a northwest-southeast decreasing spatial pattern. For the lake as a whole, the concentrations of TN, TP and Chl-a were highest for a wind speed between 2.1 and 3.2 m·s−1, which can be attributed to the idea that the wind-induced drifting and mixing effects might be dominant in the bays while the wind-induced drifting and resuspension effects could be more important in the other parts of the lake. Given that the water depth of the bays was relatively larger than that of the other parts, the drifting and mixing effects were likely dominant in the bays, as indicated by the negative relationships between the ratios of wind speed to lake depth, which can be a surrogate for the vertical distribution of wind-induced shear stress and the TN, TP and Chl-a concentration. Moreover, the decreasing temporal trend of wind speed in combination with the ongoing anthropogenic activities will likely increase the challenge for dealing with the eutrophication problem of Lake Tai. View Full-Text
Keywords: chlorophyll-a; nutrients; shallow lake; wind direction; wind speed chlorophyll-a; nutrients; shallow lake; wind direction; wind speed
Figures

Figure 1

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).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zhang, W.; Xu, Q.; Wang, X.; Hu, X.; Wang, C.; Pang, Y.; Hu, Y.; Zhao, Y.; Zhao, X. Spatiotemporal Distribution of Eutrophication in Lake Tai as Affected by Wind. Water 2017, 9, 200.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top