Water Science and Engineering 2011, 4(1) 92-100 DOI:     ISSN: 1674-2370 CN: 32-1785/TV

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Keywords
 reservoir environment
fence aquaculture
pond aquaculture
bait
eutrophication
nitrogen and phosphorus 
Authors
JI -feifei
ZHOU Huai-Dong
JIANG Cui-Ling
PubMed
Article by Ji,.F
Article by Zhou,H.D
Article by Jiang,C.L

Impact of pond and fence aquaculture on reservoir environment

Huai-dong ZHOU1, Cui-ling JIANG*1, Li-qin ZHU1, Xin-wei WANG2,  Xiao-qin HU1, Jun-yu CHENG1, Ming-hua XIE1

1. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, P. R. China
2. Shaoguan Hydrology Bureau of Guangdong Province, Shaoguan 512028, P. R. China

Abstract

With the rapid development of aquaculture in lakes and reservoirs, its negative effects on water quality and aquatic organisms are clearly emerging. Toward a better understanding of these effects, chemical and biological monitoring was conducted in the Fangbian Reservoir to study the relationship between aquaculture and eutrophication. As a domestic water supply source, this reservoir has reached the mesotrophic level. The concentrations of total nitrogen (TN) and total phosphorus (TP) in the Fangbian Reservoir have frequently exceeded the prescriptive level according to the Environmental Quality Standards for Surface Water (GB3838-2002). Pond and fence aquaculture feeding is the main cause of high levels of nitrogen and phosphorus, accounting for nearly half of the total pollution, and causing the reservoir environmental capacity to be exceeded. The amounts of nitrogen and phosphorus that went directly to the reservoir through the residual bait and fish droppings in fence aquaculture were 42 768 kg per year and 10 856 kg per year respectively, from 2007 to 2009. About 2 913 kg of nitrogen and 450 kg of phosphorus were imported to the reservoir through the exchange of water from the culturing ponds at the same time. Therefore, controlling the aquaculture scale and promoting eco-aquaculture are key measures for lessening the eutrophication degree and improving the water quality.    .

Keywords  reservoir environment   fence aquaculture   pond aquaculture   bait   eutrophication   nitrogen and phosphorus   
Received 2010-05-10 Revised 2006-11-23 Online: 2011-03-30 
DOI:
Fund:
Corresponding Authors: Cui-ling JIANG
Email: cljianghhu@163.com
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