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arbor vine相关的网络例句

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Totally 2,000 types of plants are growing in the Garden, including 60 thousand arbor species, 300 thousand shrub species, 66 thousand vine species, 850 thousand herbs, 400 thousand square meters greensward , one million potted flowers.

共移栽植物2000多种,其中乔木6万株,灌木32.4万株,藤本6.6万丛,草本85万多株,培植草坪43万平方米,花卉150多万盆,珍息濒危和有较高观赏价值的植物达110多种。

Based on the status of suburban forest of Harbin, 49 well-grown afforesting tree species including 32 species arbor, 16 species shrub and only 1 species vine which are mainly Pinus sylvestris var. mongolica, Betula platyphylla, Syringa oblata and Acer negundo et al, were selected in this study. An information system concerning tree species was established by sorting qualitative index, testing quantitative index as well as referring to other study results.

本论文从哈尔滨市城郊林种现状出发,选择了在哈尔滨地区生长良好的樟子松、白桦、紫丁香、糖槭等49种绿化树种,其中乔木树种32种,灌木16种,藤本1种,通过对树种定性指标资料的收集、整理以及定量指标的实验获得了树种全面、系统的信息。

Based on the status of suburban forest of Harbin, 49 well-grown afforesting tree species including 32 species arbor, 16 species shrub and only 1 species vine which are mainly Pinus sylvestris var.

本论文根据树种选择的依据,针对城郊环境特点和城郊森林的功能需求等,以树种的特征、生态习性以及功能(生态功能、景观功能、经济功能)三大要素中的31项单因素指标为研究内容,针对不同林种的功能需求选择适宜的树种。

However remarkable impacts were observed in the plantation in terms of community physiognomy,community structure,species composition,species richness,and biomass accumulation.1 Planting trees made community structure simple.Betula alnoidis plantation had three layers including a dominant arbor layer,a complex and well developed shrub layer and a poorly developed vine layer.The arbor layer contained few species and had a single layer.The mountain rain forest had 4 layers including the dominant arbor layer,shrub layer,grass layer and vine layer.The vine layer was well developed and very rich in species composition,and the arbor layer contained as many as 38 species that could be grouped into 3 layers.2 Sequenced by the important value,main species for the plantation and the nature forest were totally different,and the plantation had one dominant species while the nature forest contained many dominant species.3 Planting trees changed the community physiognomy.

但是人工种植西南桦林对群落的季相外貌、群落的结构、物种组成、物种丰富度以及生物量等方面有较大的影响。1人工造林使得群落结构简化,西南桦人工林的层次结构有3层,以乔木层占优势,并且有种类多而发达的灌木层,同时,藤本植物欠发达,但是乔木层树种单一,明显仅有一层;山地雨林的层次结构有4层,以乔木层占优势,还有灌木层、草本层和藤本植物,藤本植物种类多,十分发达;乔木层树种丰富,可达38种,乔木层还可分为3层。2人工造林较大程度地改变了群落的物种组成,根据重要值的大小排列,人工林和天然林的主要物种组成已经完全不同;并且人工林单优树种明显,而天然林就含有较多的优势树种。3人工造林改变了群落的外貌。

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在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

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