基于群落演替理论的人工湿地生态系统评价

Assessment of Constructed Wetland Ecosystem Based on Community Succession Theory

为了准确评价人工湿地群落在演替中的长久性,本文基于群落演替理论提出了新的人工湿地生态系统评价方法;根据人工湿地群落特征,提取出群落演替的重要影响因子,并设计人工湿地生态系统评价体系;利用层次分析法构造判断矩阵,得到层次单排序和一致性检验中的最大特征值和特征向量,从而确定各层指标的权重。实例分析选择某人工湿地,设计基于群落演替理论的人工湿地生态系统评价流程。根据该湿地模拟出的未来40年结果,其群落多样性指数、总生物量与土壤总含盐量均处于良好的水平。

In order to accurately evaluate the longevity of the constructed wetland community in the succession,a new constructed wetland ecosystem evaluation method is proposed based on the community succession theory in this paper;according to the characteristics of the constructed wetland community,the important influencing factors of community succession are extracted,and the constructed wetland ecosystem evaluation system is designed;the judgment matrix is constructed by the analytic hierarchy process,and the largest eigenvalue and eigenvector in the single-level ordering and consistency test are obtained,so as to determine the weight of each level index.Case analysis selects a constructed wetland,and designs the constructed wetland ecosystem evaluation process based on community succession theory.According to the simulation results of the wetland in the next 40 years,its community diversity index,total biomass and total soil salinity are all at good levels.