宁波城市公园植物群落节约性评价与优化模式构建

Evaluation of Plant Community Conservation in Ningbo City Parks and Optimized Model Construction

以宁波城市公园的30个典型植物群落为研究对象,对其物种组成、树种重要值、群落类型和物种多样 性进行调查分析,建立综合的评价体系,从生态度、景观度和节约度三个要素上选取12个评价因子,采用层次分析法 进行综合节约性评价.评价结果显示：宁波城市公园30个植物群落综合评价等级中,I级有5个,占总数的16. 67% ; II级有23个,占总数的76. 66 %; HI级的有2个,占总数的6.67%,表明宁波的城市公园植物群落配置总体较 好,但仍存在提升空间.针对宁波城市公园植物群落存在的问题,提出了建议与优化配置模式.

In this paper,thirty typical plant communities in Ningbo city parks were surveyed.The species composition,importance value of tree species,coenotype and species diversity of these communities were investigated and analyzed.Through the investigation,a comprehensive evaluation system was established and 12 evaluation factors were selected from three elements(ecology,landscape and conservation)to make a comprehensive conservation-oriented evaluation of 30 typical plant communities by adopting the Analytic Hierarchy Process(AHP).The results show that,in the comprehensive evaluation grade of the 30 plant communities in Ningbo city parks,5plant communities are evaluated as Grade I,accounting for 16.67% of all communities;23plant communities are evaluated as Grade II,accounting for76.66%;2plant communities are evaluated as Grade III,accounting for 6.67%.This indicates that the plant community configuration in Ningbo city parks is generally good,but there is still room for improvement.On the basis of the research and evaluation results,this paper gives some suggestions and optimized arrangement models for plant communities in Ningbo city parks.