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the tropical arboretum
相关语句
  热带树木园
     Study on Phenology of Some Tree Species Grown in the Tropical Arboretum at Jianfengling of
     海南岛尖峰岭热带树木园主要树种的物候研究
短句来源
     Based on investigations of 103 tropical tree spec ie s in the tropical arboretum of Jianfengling of Hainan Island,a preliminary analy sis was made for the elementary architecture of tropical trees in the arboretum.
     通过对海南岛尖峰岭热带树木园103种热带树木的调查,初步分析了热带树木的基本构筑型。
短句来源
  “the tropical arboretum”译为未确定词的双语例句
     A PRELIMINARY ANALYSIS ON ELEMENTARY ARCHITECTURE OF TROPICAL TREES IN THE TROPICAL ARBORETUM OF JIANFENGLING,HAINAN ISLAND
     海南岛尖峰岭树木园热带树木基本构筑型的初步分析
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  相似匹配句对
     Tropical cooking film
     高温蒸煮膜
短句来源
     Tropical Botanical Garden
     热带之梦中心
短句来源
     THE CHARACTERISTICS OF THE MOTION IN THE TROPICAL ATMOSPHERE
     热带大气运动的特征
短句来源
     On the Tropical Climate of Hainan island
     论海南岛热带气候
短句来源
     The Arboretum in the Three Gorges
     三峡植物园
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Based on investigations of 103 tropical tree spec ie s in the tropical arboretum of Jianfengling of Hainan Island,a preliminary analy sis was made for the elementary architecture of tropical trees in the arboretum. Results indicated that tropical trees in the arboretum mainly have crown forms o f egg,ball,umbrella and cylinder shapes.Trees with branching angle of 60° or 90 ° predominate and those with branching angles of 45° or 30° come next in the arboretum.For the same...

Based on investigations of 103 tropical tree spec ie s in the tropical arboretum of Jianfengling of Hainan Island,a preliminary analy sis was made for the elementary architecture of tropical trees in the arboretum. Results indicated that tropical trees in the arboretum mainly have crown forms o f egg,ball,umbrella and cylinder shapes.Trees with branching angle of 60° or 90 ° predominate and those with branching angles of 45° or 30° come next in the arboretum.For the same tree,the branches in the upper crown have comparatively g reat branching angles,while those in the lower crown have smaller branching angl es.The tropical trees in the arboretum were classified into five types according to the branching angle systems. The greatest order of branching was 7 in the tr opical trees,and most of the trees have branching orders of 3-5,of which order 4 topped followed by 5 and 3.The crown area of most tropical trees in the arboret um were ≤10?m 2 or ≥20?m 2.The relationship between stem height under bran ch and tree height of the trees in the arboretum was exponential:y=0.6483 exp (0 .1277x)(R 2=0.4582,p<0.05),and the relationship between tree height and diamete r at breast height fits the power equation:y=2.8286 x 0 4121 (R 2=0 5953 ,P<0 05).

通过对海南岛尖峰岭热带树木园103种热带树木的调查,初步分析了热带树木的基本构筑型。结果表明:树木园中热带树木的冠形主要有卵形、圆球形、伞形和圆柱形几种类型;热带树木的分支角度以60°和90°的为最多,其次为45°和30°的,在同一树木中,靠近树冠下部的枝条的分支角度较大,而靠近树冠上部的枝条的分支角度较小,根据分支角度可将热带树木分为五大类;热带树木的最大分支级数为7级,分支级数为四级的热带树木为最多,其次为五级和三级的;热带树木的的冠幅大多在10m2以下或20m2以上,而冠幅在10m2~20m2之间的树木则很少;尖峰岭树木园中的热带树木整体来说,枝下高与树高之间符合指数函数,而树高与胸径之间符合幂函数关系

 
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