鸭子河湿地的生态健康评价与恢复研究

Study of Ecological Health Assessment and Restoration of Yazi River Wetland

从湿地现状、服务功能和外环境影响3方面构建了城镇区域内湿地生态健康评价指标体系,采用层次分析法(AHP)和模糊综合评价法,对广汉鸭子河湿地这一城镇区域内河滩型湿地生态系统健康状况进行评价。结果表明,在广汉市城市化进程中,该湿地的生态系统受到了一定程度的影响,就总体而言,湿地生态系统结构完整,基本功能依然具备,但栖息地功能有一定的退化,在整体上属于亚健康状态。根据评价结果及退化成因分析,提出了相应的恢复措施,对广汉市城市化进程中鸭子河湿地的保护提供了重要的决策依据,对同类型的湿地保护具有指导意义和借鉴价值。

This paper has established the index system for ecological health assessment of regional urban wetland from three aspects of the wetland, its present situation, service function and external environment. Methods of Analytic hierarchy process （AHP） and fuzzy comprehensive evaluation were used to assess the ecological health status of Yazi River wetland. The results showed that the ecosystem of this wetland was influenced by the urbanization of Guanghan City. In general, the ecosystem structure of the wetland kept integrated and its basic function was available, however the habitat for birds had certain reduction, thus the ecological health of this wetland was in a sub - health status. Based on the evaluation results and the cause analysis of degradation, some restoration measures were proposed, which provided important decision bases for the protection of Yazi River wetland during the process of urbanization. Besides, the results also have a highly guiding significance and valuable reference for the same type of wetlands.