延安市城市森林树种草种调查及其评价

Investigation and Evaluation of Trees and Grass of Urban Forest in Yan'an

延安市城市森林树种草种调查和分析表明,延安市城市林业栽植树(草)种少,共39科113种,选择余地小,不能满足城市绿地类型多样性和植物多样性的要求,乔、灌、草配置比例不合理,城区园林注重视觉效果,忽视改善环境质量的生态功能,对此提出了建议。

<Abstrcat>The trees and grass species of urban forest in Yan'an were investigated and evaluated,and the result show that there are 113 species,35 families of plant in the urban forest which can't satisfy the diversity in plants.The ratio of arbor,shrub and grass in the urban forest isn't reasonable,and the visual effect of the city park is regarded as the important thing,neglecting the function of the city park in improving the eco-environment.Therefore suggestions are put forward.