Healthy water circulation assessment of Zhalong wetland based on PSR model

Based on the analysis of healthy water cycle concept of wetland and its connotation,and the pressure-state-response (PSR)conceptual model for wetland healthy water cycle is proposed.The assessment indictor system for wetland healthy water cycle is established based on the model.The indictor system aims to explore relationships between the pressure and the wetland healthy water cycle change,and proposes the corresponding improvement measures.The fuzzy pattern recognition model is used to evaluate healthy water cycle of wetland,the calculating weighting method of each indicator is of analytic hierarchy process.Furthermore,the above theory and method are applied to the case study of Zhalong wetland to reveal their health grades and disadvantages.According to the choice principle of the indicator,the 9 indicators are selected.The five-grade assessment standard is adopted.The comparison shows that the evaluation result of this method is in accordance with the actual situation of Zhalong wetland.