Safety Assessment of Urban Water Metabolism Based on PSR Framework—— Taking Tianjin City as an Example

2017 4th International Conference on Environmental Systems Research

生态环境科学

Xu, Jin^1,2 ; Li, Binke^2 ; Yu, Zhihao^1

School of Environmental Science and Engineering, Tianjin University, Tianjin

300072, China^1

School of Management, Tianjin University of Technology, Tianjin

300384, China^2

关键词: Entropy weight method;    Evaluation index;    Evaluation results;    Evolution process;    Framework models;    Research results;    Safety assessments;    Safety evaluations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/178/1/012008/pdf
DOI  :  10.1088/1755-1315/178/1/012008

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The complex urban water circulation system is developing in a more severe and complicated direction, and the phenomenon of urban water metabolism imbalance and water metabolism crisis become more and more obvious. The PSR framework model is introduced to construct the urban water metabolism safety evaluation index, and the entropy weight method is used to determine the weight of the corresponding evaluation index and the calculation of the safety index, at the same time, taking Tianjin city as an example. Research results show that, the evolution process of water metabolism in Tianjin showed a trend of development during the evaluation period, that is, obviously improved in the early stage, stable in the medium term, and decreased in the later period, the empirical data show that the evaluation results are reasonable.