摘要
采取样线和样地调查相结合的方法,对陕西常绿树种的种类组成、地理分布区类型和形态特征等方面进行多样性研究。结果显示,陕西地区常绿树种共计45科87属223种,其中蔷薇科、壳斗科和樟科为优势科,卫矛属、冬青属和杜鹃属为优势属;有被子植物194种,裸子植物29种。该区常绿树种属有10个分布区类型,其中北温带分布类型居首位,占28.74%。该区常绿树种按形态特征可分为三大类,灌木最多,占62.78%;大乔木次之,占29.15%;小乔木最少,占8.07%。表明陕西常绿树种野生种质资源丰富,开发利用潜力巨大,应合理引种驯化,培育优良新品种,以丰富园林植物多样性。
The species composition,floristic elements and morphological characteristics of evergreen trees in Shaanxi Province were researched by line transect and sample plot method. The results showed that 223 species belonged to 87 genera and 45 families in Shaanxi Province,including 29 gymnosperm plants and194 angiosperm plants. The dominant families consisted of Rosaceae,Fagaceae and Lauraceae,and the dominant genera were Euonymus,Ilex and Rhododendron. Based on the analysis of floristic elements,the genera of evergreen tree species could be divided into 10 areal types,and the floristic elements in the north temperate zone ranked highest in this area,accounting for 28. 74%. The evergreen species were divided into three morphological types,shrub accounting for 62. 78%,megaphanerophyte accounting for29. 15%,small arbor accounting for 8. 07%. With abundant germplasm resources and great developing potential, the evergreen tree species in Shaanxi Province should be properly introduced and domesticated,and new fine varieties should be cultivated to enrich the diversity of landscape plants.
作者
薛君艳
司国臣
夏浩军
王荣
XUE Junyan;SI Guochen;XIA Haojun;WANG Rong(Yangling Vocational ＆ Technical College, Yangling, Shaanxi 712100, China;Langao State - owned Forest Farm, Ankang , Shaanxi 725400, China;Shaanxi Institute of Forest Inventory and Planning, Xi＇ an 710082, China,)
出处
《林业调查规划》
2018年第3期53-58,共6页
Forest Inventory and Planning
基金
杨凌职业技术学院科研基金项目A2014028
关键词
常绿树种
多样性研究
种类组成
分布区类型
形态特征
陕西省
evergreen tree species
diversity study
species composition
floristic elements
morphological characteristics
Shaanxi Province
