Correlation Analysis Between Influencing Factors Of Health Of Xiaoqing River And Biotic Integrity Index Of Fish

With the development of society and economy,people development and utilization of river increase unceasingly,so the river pollution is increasingly serious,at the same time,water pollution on people's production and life also caused serious influence.The health of basin has attracted more and more people's attention,and in recent decades,some experts and scholars in our country and abroad began to shift focus to the river health evaluation,in the evaluation of basin health at the same time actively explore the influence factors of basin health and the health of the relationship between influencing factors.The method of river health evaluation has physical,chemical and biological methods,and biological methods have become widely used nowadays.Biological method and through the large benthic animals,phytoplankton,microorganism method to evaluate the river,fish integrity index method is one of the first and the most widely used method.The environmental pollution of Xiaoqing River is becoming more and more serious with the development of economy and the increase of sewage discharge,which brings serious influence to the water environment and the development of urban economy.The sampling point survey of the Xiaoqing River,the fish species,quantity,in the community distribution,breeding methods,establishing index system based on the domestic and foreign literature,to build a complete set of fish integrity index evaluation system,through the method of 1,3,5 valued integrity the assignment of fish.Evaluate the health of sampling sites in the Xiaoqing river.At the same time using the spatial interpolation of the geographic information system analysis,to explore the health degree of Xiaoqing River from upstream to downstream of the trend,the purpose of this paper is to explore the impact of watershed health factors and fish integrity,to choose the more extensive application of the social economic indexes and land use index and quality index,analysis of increase in population density with the economic output and the amount of land use area ratio to explore the relationship between influence factors and watershed health fish integrity index and important influence factor.The fish integrity index assignment method is concluded from the source to the health of the Xiaoqing River Estuary in Ji'nan Huaiyin District to the flyover zone decreases,until the Binzhou city of Zouping gradually increased,from Zouping to Dongying City,Guangrao County,the total trend decreased gradually,to the Wangdao of Dongying reached the lowest point sampling the level of.Through the social economy,land use and water quality research that has important influence the integrity of the one or two,the three industry and industry of fish,and the proportion of land is an important threat to the Xiaoqing river health level,dissolved oxygen,pH value,COD concentration in the water,with an important influence on the fish in the river basin the integrity of the index,the effects of pollutants in COD,and a significant negative correlation with fish integrity index.