白洋淀湿地生态系统演变及健康状态评价

Evolution and health status assessment of wetland ecosystem in Baiyangdian

为明确白洋淀生态现状,2018年调查了白洋淀水生态环境状况,分析了生态系统的演变及影响因素,构建白洋淀湿地生态系统健康评价体系,运用多级模糊综合评价法对湿地生态系统健康状况进行综合分析。结果表明:白洋淀湿地耐污性较强的生物在优势物种中所占的比重逐年增多、生物群落结构趋于简单,此现象与淀区水量、水质和人类活动紧密相关。白洋淀湿地健康等级为亚健康状态,其中生境指标的健康状况较差。研究结果可为白洋淀生态治理提供一定的理论参考。

In order to know the ecosystem status of Baiyangdian wetland, the water ecological environment was investigated in 2018, and the ecosystem evolution and its influencing factors were analyzed. The healthstatus of wetland ecosystem was comprehensively analyzed by establishing the ecosystem health assessment system and using the multi-level fuzzy comprehensive valuation method. The results showed that the proportion of organisms with strong pollution tolerance in the dominant species increased year by year, and the structure of biological community tended to be simple. This phenomenon is closely relatedto water quantity, water quality and human activities. The health level of Baiyangdian wetland is sub-health,and the health status of habitat indicators is poor. The research results can provide theoretical reference for the ecological management of Baiyangdian wetland in the future.