Study On The Overall Evaluation And Dynamic Model Of Chaohu Lake Water Quality For 13 Years

At present,the pollution of lakes in China is very serious.This not only restricts the development of social economy,but also has great harm to human health.Therefore,this article through the water quality evaluation to grasp the current status of the water environment,and the establishment of water quality dynamic model to reflect and predict the water quality indicators.This is of great significance to the management and protection of water environment and the prevention and control of eutrophication.In this paper,we use the interval entropy method to collate and analyze the13-year data of water quality indicators in Chaohu Lake,and then use the decision-making model to obtain the overall changes in the water environment of the Chaohu Lake during the 13 years and the status quo,and analyze the water quality.The relationship between the indicators establishes a dynamic model of water quality.Through the study of the model,it can provide data support and scientific basis for the management of the water environment in Chaohu Lake.The full article is divided into five chapters.The main research contents and research results are as follows:The first chapter mainly introduces the background and significance of Chaohu Lake and its water quality research,the current status of water quality research,the impact of various water quality indicators on the water environment and their interactions.The second chapter mainly introduces some basic knowledge and theory necessary for this study.In the third chapter,the monitoring data of water quality indicators in Chaohu Lake during the 13 years were adjusted by the moving average method,and then these data were processed by random number generator and 95% confidence interval.The reasonableness and advantage of the interval entropy weight method can be knownfrom the examples.Therefore,using the method of interval entropy to establish a decision model and apply it to these data can better evaluate the overall situation of Chaohu water quality,so as to fully and overall understand the changes in the water quality of Chaohu Lake and the status quo.In the fourth chapter,a water quality dynamics model was established by the relationship between water quality indicators.The local stability of positive equilibrium and the existence of positive solutions were discussed.By analyzing and researching the model,it can provide a scientific basis for improving and managing the water environment of Chaohu Lake.This model is a further promotion of the model proposed by Richard McGehee in 1977.The fifth chapter is the conclusion and prospect of this article.