湖滨湿地生态系统稳定性评价

Analysis of ecological benefit of ecological restoration of aquatic-terrestrial everglade from stability of ecological system

根据生态系统稳定性的产生原因,将稳定性划分为系统整体稳定性和系统结构稳定性。从系统的稳定性出发,以生态系统的整体稳定性和结构稳定性两个方面为对象,对湖滨湿地生态恢复所产生的生态效益进行了研究。针对系统整体稳定性,给出了生物多样性指数、自然保护区比重和自然灾害等级3个评价指标,并介绍了相应的指标量化方法。与此同时结合能值理论,准确地分析了湖滨湿地生态系统的结构稳定性,为评价湖滨湿地生态恢复的生态效益评价提供了客观的标尺。

According to the physical basis of the stability, the stability of ecosystem is divided into the integrity stability and the stability of system structure. The integrity stability describes the ability of a system to resist the environmental disturb, while the stability of system structure shows the ability of the system to counteract the interior disturb. From the view point of stability of ecosystem, the ecological benefit of ecological restoration for the aquatic--terrestrial wetland is investigated. For the first find of stability, biodiversity index, proportion of area for nature reserves, and the rate of disasters are given as assessment indexes, meanwhile, the method to quantify these indexes is given in this paper. The stability of system structure for the aquatic-terrestrial wetland ecosystem is evaluated by energy theory in a relatively exact meathod. Thus, it can be used as a useful method to assess the ecological benefit for the ecological restoration of aquatic-terrestrial wetland.