用AHP法构建耐荫植物综合评价指标体系筛选耐荫植物

在华南地区实地调查中收集了30种具有一定耐阴性的园林植物,先在60%的光照条件下预试验2个月,从中筛选出15种作为供试材料,经60d光胁迫试验,测得与生长、生理和景观特征相关的12个指标参数,采用AHP法构建出了耐阴植物综合评价指标体系。通过综合评价将15个参试品种划分3类:评分3.0~4.0的为耐阴品种,可耐遮阴85%的阴生环境;评分2.0~3.0的为较耐阴品种,可耐遮阴75%的阴生环境;评分1.0~2.0的具有一定耐阴性,可耐遮阴60%的阴生环境。筛选出了江南星蕨等5种耐阴蕨类植物,小驳骨等3种较耐阴植物和鸟尾花等7种具一定耐阴能力的植物。

Selection of shading tolerance plants based on comprehensive evaluation index system with AHP approach

Based on the field survey,30 species of shading tolerant garden plants were selected in southern China.The pre-selection trial was conducted under 60% of full sunlight condition for 2 months and 15 species were selected for further test under light stress for 60 days.12 indexes in terms of growth,physiology and land-scape were measured to establish a comprehensive evaluation index system (CEIS).15 selected species were di-vided into 3 types by using CEIS,including the high shading tolerance plants with the score of 3.0 to 4.0 could grow under 80% of shading,the medium shading tolerance plants with the score of 2.0 to 3.0 could grow under 75% of shading,and the low shading tolerance plants with the score of 1.0 to 2.0 could grow under 60% of shading.Based on CEIS,5 species with high shading tolerance,3 species with medium shading tolerance and 7 species with low shading tolerance were selected.