基于模糊综合评价模型的天津滨海新区湿地生态系统健康评价

以环渤海地区的天津滨海新区湿地为例,运用模糊综合评价模型对湿地生态系统的健康进行了诊断评价。首先从湿地生态特征、整体功能特征和社会经济3方面选取26个评价指标,构建了天津滨海新区湿地生态系统健康的评价体系。评价等级分为很健康、健康、一般、一般病态、疾病5级,运用定量与定性相结合的方法界定等级。运用模糊综合评价模型对天津滨海新区湿地生态系统健康进行诊断,评价综合得分为0.48,健康水平处于疾病状态,主要表现在水质污染严重和水源保证水平低、景观破碎化、功能退化3个方面。

Using Fuzzy Comprehensive Evaluation Model to Evaluate the Wetland Ecosystem Health of the New Coastal Area in Tianjin

A Fuzzy Comprehensive Evaluation Model was built to evaluate ecosystem health of the wetland in the New Coastal Area of Tianjin. Firstly, 26 assessment indicators were selected from three aspects of ecological characteristics, overall functions and socioeconomic conditions of the wetland, an indicators system for evaluation of wetland ecosystem health of the new coastal area in Tianjin was established. Secondly, ecosystem health was divided into 5 grades： very healthy, healthy, normal, normal with ill, and ill. The result of the Fuzzy Comprehensive Evaluation indicated that the wetland ecosystem under study was ill, with a comprehensive score of 0.48. The main causes for the illness were water pollution, shortage of available water, landscape fragmentation and function degradation.