基于集对分析的卧龙湖湿地生态系统稳定性评价

Research on stability evaluation of ecosystem of Wolonghu Lake wetland based on set pair analysis

针对卧龙湖湿地生态系统具有非线性、非渐变的特点。通过分析卧龙湖湿地生态系统与生态稳定性的关系,建立指标体系。运用集对分析理论的方法对卧龙湖湿地生态系统进行稳定性的评价。结果表明,集对分析理论适用于生态系统稳定性评价,差异度i的取值可以反映出生态系统的稳定状态及其管理水平。卧龙湖湿地系统目前为中度稳定,影响卧龙湖湿地系统稳定性的重要因素是政策法规,湿地水质、旱涝灾害系数、湿地景观格局、卧龙湖湿地的调蓄能力以及该区域土地利用结构等。

The ecosystem of Wolonghu Lake wetland has the characteristics of nonlinear and non-gradual change. By analyzing the relation between the ecosystem of Wolonghu Lake wetlands and ecosystem stability, an evaluation index system is established. The evaluation of stability is made by the theory of set pair analysis. The results show that the theory of set pair analysis is applicable to the stability evaluation, and the ecosystem stability and management level can be reflected by the different value of i. The ecosystem of Wolonghu Lake wetland is in a state of middle stability, and the important affecting factors of the system are policy and decree, the water quality of wetland, the disaster coefficient of flood and drought, the landscape pattern of wetland, the storage capacity of Wolonghu Lake wetland and the structure of land use.