Current Situation,Problems And Countermeasures Of Fishery Resources In Hongze Lake

This paper is based on the historical data of Hongze lake,through the investigation of the status quo of the Hongze Lake plankton,benthic animals,aquatic plants and fish,and compared with the relevant materials,analyzes the problems existing in Hongze lake fishery resources and management,and puts forward countermeasures and suggestions to solve the problem.Hongze lake is China’s fourth largest freshwater lake,the second largest lake in Jiangsu Province,is China’s five largest freshwater lake in the youngest one.It is located in the middle reaches of Huaihe,northwest of Jiangsu province;Hongze,Siyang,Sihong,across Xuyi,Huaiyin and six counties(districts)places.Between east longitude 118 degrees 10’-118 degrees 52’,between a 33 degrees north latitude 33 degrees 06 ’40’,it zenas the Huaihe River,South Yangtze River,East through the Yellow Sea,north of Yishu,diverting water from south to North East Route Project of water passages,of basin flood peak clipping,adjust the surplus and deficiency of water resources,aquatic farming and fishing rich fishing in the lake area(agricultural)people plays a very important role.The biomass of Hongze lake is the important part of aquatic ecosystem,which is the important part of the aquatic ecosystem,which is the important indicator of Hongze lake fish.According to the survey results,with reference to domestic and foreign Lake biological productivity of reunification method and food web,calculate the year of the Hongze Lake fishery potential for:phytoplankton feeding fishery potential about 7543 tons,zooplanktivorous fish potential production about 9678 tons,benthic feeding potential fishery productivity about 8122 tons.But due to overfishing,pollution of the environment,illegal sand mining factors influence,resulting in Hongze Lake fishery water quality of the environment is getting worse,eutrophication eutrophication gradually increased,the decrease of total biological resources,variety structure occur change,fish community biodiversity reduction and miniaturization of fish resources and younger age.The scale and structure of the fishery industry are strictly controlled,the area of the water,the fish production,the improvement of the water consumption,and the necessary measures to improve the ecological restoration.The management of fisheries resources in Hongze Lake,put forward the following suggestions:one is the scientific establishment and implement aquaculture planning and implementation,and promote the sustainable development of lake fishery;the second is appropriate to reduce the lake total fishery production;three is the protection of fishery ecological environment,to carry out remediation;four is scientific selection breeding and releasing objects,restoration of fishery ecological environment;the fifth is to combat illegal sand mining.Hongze Lake as the mother of Suqian and Huaian,more than a thousand million population survival and development of life,under the premise of environmental protection priorities re-examine fishery goals and ideas,promote the Hongze Lakers,fishing,fish,water and ecological environment harmonious development.