Technology Research Of Water Purification Fisheries In Lihu Lake

Lake, reservoir is important fresh water in our country, also the important inland freshwater fishery base and freshwater animals germplasm repository. There are almost 2759 lakes in our country,9109.63 square kilometers, more than 87151 kinds of reservoirs, 34.5 million mu. In the current, urban sewage treatment capacity is low, lakes, reservoirs are mostly as a sewage water, making them different, outbreaking of bacterial epidemic of aquatic animals, degradation of fishery production.Only a few fish planktons as food living in it. Lakes and reservoirs show dramatic change trend of eutrophication, entering a wide range of ecological degradation and compound, additive of environmental pollution.At the beginning of this century, the country has payed more and more attention to the water quality protection, to solve the high nitrogen and phosphorus of lake eutrophication problem, freshwater fisheries research center puts forward to use "water purification fisheries" concept to implement ecological restoration of lakes and reservoirs. The technology is based on the theory of modern ecology, according to the specific water environment conditions, in order to protect the water environment for the purpose, by choosing appropriate artificial breeding fish, shrimp, shellfish, repair damaged the waters of aquatic animals community composition, strengthen water self-purification ability, protect the ecological balance, so as to achieve both protect water environment, and to make full use of water and rivers force.This paper is based on the study of water purification technology in lihu lake, through the comparative study on Chinese and foreign lakes and reservoirs of different ecological restoration technology, discussing the theoretical basis and practice methods and model of water purification technology in lake and reservoir.、This paper is also trying to analysize the influence on algae, water quality and biodiversity of these water fish, and the influence on water fishery technology by wetland park landscape construction, pointing out the advantages and disadvantages of aquatic plants on lake ecological restoration, exploring the future development direction of fishery technology for water purification.