山东寿光沿海湿地生态系统健康诊断

以寿光沿海湿地为例，运用二级模糊综合评判模型对湿地生态系统的健康进行了综合评价。首先从湿地生态特征、整体功能特征及外部社会环境三方面选取23项评价指标，构建了寿光沿海湿地生态系统健康的综合评价体系，整个指标体系分为单项指标、亚类指标和综合指标三个层次：然后进一步把评价指标划分为很健康、健康、亚健康、疾病4个等级，运用定量、半定量与定性相结合、定性描述等多种手法界定了等级划分标准，确定了各指标的等级隶一度，构造了隶属评判矩阵；通过专家咨询法．确定了各指标的权重，构造了权重向量；最后，运用加权平均型二级模糊综合评判模型对寿光沿海湿地生态系统健康逐级进行评价。评价结果显示，该温地系统在最大隶属程度上处于亚健康状态。

Health Diagnosis For Wetlands on Coastal Plain of Shouguang City

Taking the wetland on the coastal plain of Shouguang City as a case, this paper evaluated the health of the wetland by using the fuzzy comprehensive judging model. The connotation and correlative theories of wetland health were first expatiated here. According to the interrelted fundamentals, the paper selected twenty-three indexes from the ecological characteristics, unitary function and the exterior social environment of the wetland, and then established an indicator system for ecosystem health evaluation of the wetland on the coastal plain of Shouguang City. The indicator system includes monomial index, sub type index and composite index, and each index is divided into four grades accordin~ to the corresponding standard, which are excellent health, health, sub health and illness. The paper established the degree of each grade for each index and constructed matrix of judgment, and also the right weight vector of each index by referring to the opinion of experts, and ultimately evaluated the health of wetland ecosystem on the coastal plain of Shouguang City by using the two-grade fuzzy comprehensive judging model. In view of the evaluation results, some illness factors of the wetland were discussed at the end.