吉安市园林植物初步调查及其多样性研究

通过实地踏查,对吉安市(吉州区和青原区)园林植物的种类组成、生活型、观赏特征和园林用途等进行了调查研究。结果表明:吉安市园林植物物种多样性丰富,有园林植物76科148属188种(含变种,不含品种),其中裸子植物有7科17属20种,被子植物69科131属168种,分别占总种数的10.63%和89.36%。组成吉安市园林植物的优势科较少,优势科园林植物种数占吉安市园林植物总种数的37.76%。吉安市园林植物的生活型多样,乔木52种,灌木74种,草本61种,分别占吉安市园林植物总种数的27.65%、39.36%和32.45%。吉安市园林植物观赏功能类型多样,主要可分为观叶类、观花类、观果类、观树形类、藤蔓类和香木(花)类等6类。吉安市园林植物园林用途多样,主要有行道树类、孤散植类、庭荫树类、风景林木类、花灌木类、绿篱类、垂直绿化类、草坪地被类和花坛花境类。

PRIMARY INVESTIGATION AND DIVERSITY STUDY OF LANDSCAPE PLANT IN JI'AN CITY

Through field survey, species composition, life form, ornamental characteristics and landscape use of landscape plant in Ji'an City were investigated. The results showed that: the species diversity of landscape plant in Ji'an City was abundant, there are 188 species (including varieties, except cultivated varieties) of landscape plant, belonging to 76 families and 148 genera, in which the gymnosperm accounted for 7 families 17 genera and 20 species, the angiosperm 69 families, 131 genera and 168 species. The number of gymnosperm and angiosperm accounted for 10.63% and 89.36% of the total species respectively. The dominant families consisted of the landscape plant in Ji'an City was few with the percentage of 37.76% of the total landscape plants in Ji'an City. The life form of landscape plant in Ji'an City was diverse including 52 tree, 74 shrub and 61 herb with the percentages of 27.65 %, 39.36% and 32.45 % respectively. The ornamental function types of landscape plants in Ji'an City was diverse and mainly divided into foliage plant, flowering plant, fruit-effect plant, tree-form plant, climbing plant and fragrant plant. The landscape use of landscape plant was various including roadside tree, isolated tree, shade tree, scenic forest, flowering shrub, hedgerow, vertical greening plant, ground cover plant and flower border plant.