alexa Eutrophication Control by Physical-Ecological Engineeri
ISSN: 2161-0525

Journal of Environmental & Analytical Toxicology
Open Access

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Research Article

Eutrophication Control by Physical-Ecological Engineering At the Mouth of the Maixi River in Baihua Reservoir

Qiuhua Li*, Lei Zhang, Chen Fengfeng, Lili Chen and Shulin Jiao
Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, PR China
Corresponding Author : Qiuhua Li
Key Laboratory for Information System of Mountainous
Area and Protection of Ecological Environment of Guizhou Province
Guizhou Normal University
Guiyang, 550001, P.R. China
Tel: +8613608511078
Fax: +86 851 6702710
E-mail: [email protected]
Received June 02, 2014; Accepted July 29, 2014; Published July 31, 2014
Citation: Li Q, Zhang L, Fengfeng C, Chen L, Jiao S (2014) Eutrophication Control by Physical-Ecological Engineering At the Mouth of the Maixi River in Baihua Reservoir. J Environ Anal Toxicol 4:235. doi: 10.4172/2161-0525.1000235
Copyright: © 2014 Li Q, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

From June 2009 to August 2011, an integrated physical and ecological engineering experiment (PEE) for ecological remediation was conducted in the Maixi river estuary in Baihua Reservoir. An experiment site (EXP) inside, and a reference site (REF) outside, the engineering enclosure were selected. Total nitrogen (TN), total phosphorus (TP), Chlorophyll-a (Chl-a), and chemical oxygen demand (COD) at EXP were significantly lower than at REF; and the greatest differences were 1.00 mg/L, 0.04 mg/L, 23.06 μg/L, and 8.40 mg/L, respectively. Transparency at EXP was dramatically higher than at REF. The trophic index state (TSI) was between oligotrophic and mesotrophic at EXP, between mesotrophic and eutrophic at REF. Phytoplankton abundance in June 2011 was 2100×104 cells/L at REF, but lower at EXP with 33×104 cells/L. Cyanobacteria dominated phytoplankton biomass at both sites, but a higher proportion of diatoms and dinoflagellates was found at EXP. Rotifers were the main estuarine zooplankton. Copepod abundance was significantly different among the sites (p<0.01), with greater abundance at EXP. In general, eutrophication was controlled by the PEE, which could be adjusted to improve water quality.

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