广州地区乡土树种筛选与园林价值综合评价

Comprehensive Evaluation of Selection and Landscape Value of Native Tree in Guangzhou Region

乡土树种是创建国家生态文明城市的重要保障。为满足城市园林建设的需要,基于广州乡土植物名录,筛选出一批适合华南地区城市绿化的乡土树种。从景观与美学价值、生态与资源价值、科研价值和适应能力4个方面构建了广州、华南地区乡土树种筛选与评价体系,确定了20个评价指标,运用层次分析法(AHP),针对乡土树种共99科327属609种进行了综合评价。共筛选出优良I级树种104种,II级树种156种,III级树种162种,IV树种187种,建议选取前2级进行开发利用。基于综合评价结果,筛选了包括观赏树种、硬木类树种、湿地适宜树种等9类乡土特色树种。

Native plants are an important guarantee for building a national ecological civilization city.To meet the needs of urban garden construction,a batch of native tree species suitable for the urban landscaping of South China is selected based on the list of native plants in Guangzhou.A selection and evaluation system of native tree species in Guangzhou and South China is established from four aspects of landscape and aesthetic,ecological and resource,scientific research,and adaptability,and 20 evaluation indexes are determined.A total of 609 native plants belonging to 327 genera of 99 families are evaluated by Analytical Hierarchy Process(AHP).The election results show that grades I to IV have 104,156,162,and 187 species,respectively.It is suggested to select the first 2 grades for development and utilization.Finally,based on the evaluation results,nine kinds of native plants are selected and recommended,including ornamental plants,hardwood and wetland-suitable plants,etc.