杭州西湖景区蕨类资源观赏应用价值的综合评价

Comprehensive Appraisal on the Ornamental and Applied Value for Fern Species in Hangzhou West Lake

基于对杭州西湖蕨类植物资源的调查,以观赏应用价值为总目标确立18个评价因子,对其进行分类组合,用层次分析法(AHP法)建立一套适合蕨类植物的综合评价模型,并对18个评价因子进行计算分析,得出主要的5个评价指标,按权重值大小依次为出现频率、叶形、叶稀有度、叶质、群体枯叶期。按照该综合评价模型,对杭州西湖64个蕨类种类进行综合评价,得出7种较佳的蕨类植物材料,以为其在园林绿化中的应用提供科学的理论依据。

Based on the investigation of fern resources in Hangzhou West Lake,18 appraisal indexes were established and a multifactor appraisal system based on the analytic hierarchy process was developed aiming at getting the ornamental value.The 5 main appraisal indexes were calculated by 18 evaluation factors.The result showed that there were 5 important indexes,including occurrence frequency,leaf shape,leaf rarity,leaf texture and perish period.According to the comprehensive evaluation model,64 fern species of Hangzhou West Lake were judged by this way and 7 good ferns were obtained,which can provide a scientific basis for landscape application.