Research on safety diagnosis for water environment based on gray relational analysis - a case study of Taizhou bay.

The study of water environment security in Taizhou bay is related to the sustainable development of the society and the benign cycle of the ecological environment. Therefore, it is very important for water environment safety diagnosis and scientific prediction. According to the Analytic hierarchy process (AHP) to obtain the index and the index of child safety, the research also evaluated the water security status of Taizhou city for 2011-2015 years, which combined with comprehensive index method. Another important aspect of this work is the fact that this paper analysed the main factors to explore the influence of water safety by gray correlation analysis, and then used the grey GM (1, 1) model for forecasting 2016-2020 years of the water security situation in Taizhou bay. One of the most important objectives of this paper is to judge the long-term water environment safety situation and consider when the water environment tends to be unsafe and finding the approximate value of each indicator to put forward corresponding countermeasures for the future water environment insecurity.