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2009 WRI World Congress on Computer Science and Information Engineering
Study on the Response of Lake Chaohu Eutrophication to Yangtze River - Lake Chaohu Water Transfer Project
Los Angeles, California USA
March 31-April 02
ISBN: 978-0-7695-3507-4
The eutrophication of Lake Chaohu is longtime integrated and accumulative effect of pollution load, hydrological regime and exterior condition and so on. But one of the direct reasons leading to deterioration of hydrological situation is the gate dams regulation. As the large-scale water transfer project of water resources allocation in Anhui Province in the new century, Yangtze River - Lake Chaohu water transfer project is beneficial to accelerate water flow of the lake, enhance self-purification of the lake, extend water environmental capacity and alleviate eutrophication of the lake. Through establishing BP network model of Lake Chaohu eutrophication forecast, the response of Lake Chaohu eutrophication to Yangtze River - Lake Chaohu water transfer project is studied by means of numerical simulation. The results show that all of the four water transfer alternatives could alleviate the situation of Lake Chaohu eutrophication. In detail, TLI (trophic status index) of the west part sampling site will reduce to middle eutropher from hyper eutropher and TLI of the east part sampling site will reduce to mesotropher from light eutropher, that is to say both of the west and east part will reduce one grade of eutrophication level. Especially, by implementing project of Caizi Lake and Fenghuangjing joint water transfer, TLI of the west and east part will reduce most. Lake Chaohu water transfer project is a good opportunity to control Lake Chaohu eutrophication. Additionally, large-scale water transfer is also a double-edged sword to ecosystem along the route, and it is also necessary for us to realize drawbacks of implementation of Yangtze River - Lake Chaohu water transfer project, such as short circuit of lake flow, stagnation of lakes due to lots of sediment from Yangtze River and eco-risk of soil gleying along inlet rivers. Therefore, we should develop optimal project design and take countermeasures to guarantee completion of eco-aim of the project successfully.
Index Terms:
eutrophication, Yangtze River - Lake Chaohu water transfer project, BP network
Citation:
Chen Yun-feng, "Study on the Response of Lake Chaohu Eutrophication to Yangtze River - Lake Chaohu Water Transfer Project," csie, vol. 5, pp.614-619, 2009 WRI World Congress on Computer Science and Information Engineering, 2009
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