常绿树
- 与 常绿树 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The avenue planting of nine cities in Zhejiang has the following characters: 1. Avenue planting tree species are plenty; 2. Avenue planting benefits among the cities are not uniform and tree species used are various; 3. Tree species used for avenue planting are simple and landscape effects unideal; 4. Cultivated manner and stratal structure are simple, ecological benefits no good; 5. The tree species ratio, of evergreen with deciduous, of fast-growing with slow-growing, is out of proportion, and short-term...
通过对浙江省具代表性的9个主要城市行道绿化状况的调查分析,结果表明浙江省城市行道绿化具以下几个特点:①行道树种资源丰富;②城市之间绿化效果差异悬殊,所采用的绿化树种各有侧重;③绿化树种单一,色彩单调,景观效果差;④栽植配置方式单一,层次结构简单,生态效益差;⑤常绿树种与落叶树种、速生树种与慢生树种比例失调,近期效益考虑多,远期效益考虑少。
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Any of several coniferous evergreen trees of the genus Agathis,especially A.australis of New Zealand,having broad leathery leaves.
贝壳杉一种贝壳杉属的针叶常绿树,尤指产于新西兰的新西兰贝壳杉,具有宽大的似皮革的叶子
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Any of various chiefly tropical evergreen trees,shrubs,or woody vines of the family Palmaeor Arecaceae, characteristically having unbranched trunks with a crown of large pinnate or palmate leaves having conspicuous parallel venation.
棕榈科植物棕榈科的各种主要的热带常绿树、灌木或木质藤本植物,特点为有无分支的树干,其顶端集生羽状或掌状的树叶,并带有明显的平行叶脉
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Bristlecone Pine, common name for a cone-bearing evergreen tree native to high, dry mountainous areas in the western United States.
狐尾松是一类生长在美国西部干燥高山上的结松果的常绿树木的共称,因为松果上的鳞片长得像狐尾而得称。
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Bristlecone Pine 狐尾松 Bristlecone Pine, common name for a cone-bearing evergreen tree native to high, dry mountainous areas in the western United States.
狐尾松是一类生长在美国西部干燥高山上的结松果的常绿树木的共称,因为松果上的鳞片长得像狐尾而得称。
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Pseudoverticillata, but there was no significant change in Celtis wightii. There was no significant change in leaf area specific hydraulic conductivity K(subscript l between the two seasons in all the three species, which may caused by the adjustment in hydraulic architecture through partial loss of leaves during the dry season. In the dry season, maximum carbon assimilate rate A(subscript max was significantly lower than that of the wet season in all the three species.
除油朴的枝条边材比导率K(下标 s在旱季和雨季没有显著性差异外,尖叶闭花木和轮叶戟的K在旱季都有显著的降低;而枝条的叶比导率K(下标 l三树种在两个季节间均无显著变化。K在旱季没有显著性降低,可能是常绿树种在旱季通过脱落部分叶片以调整其水力结构来保持较高的单位叶面积的水分供应。
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Any of various evergreen trees or shrubs of the genus Cupressus, native to Eurasia and North America and having opposite, scalelike leaves and globose, woody cones.
柏树一种柏木属的常绿树和灌木,原产于欧亚大陆和北美洲,而且长有成鳞片状的对生叶和木质的球果
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Based upon the ecoanatomical method, leaf anatomical characters of eleven populations of six evergreen species (Cyclobalanopsis glauca, C. myrsinaefolia, C. gracilis, Castanopsis sclerophylla, C. eyrei and Lithocarpus glaber) from the eastern subtropical area of China were analyzed and compared with SPSS, DCA and TWINSPAN. The results are: 1. Although the leaf structures of the eleven populations still belong to the mesophyll type, they all express the trend of xerophilization. 2. There are some differences in leaf anatomical characters among populations, species and genera, which occur as the results of their adaptation to different habitats. 3. Different leaf anatomical characters have different variations among populations, species and genera, of which leaf thickness and palisade tissue thickness (considered as ecological adaptation characters) have greater variation than sponge tissue thickness, lower cuticle thickness and lower epidermis thickness (as systematical evolution characters). 4. The leaves of C. sclerophylla and C. glauca with thicker lamina, palisade tissue and cuticle (a multilayered upper epidermis in C. sclerophylla) are thought to better adapt to their dry habitat. The leaves of C. eyrei with thicker sponge tissue, although characterized by a multlayered upper epidermis, adapt to their humid and warm habitat. The leaves of C. myrsinaefolia and C. gracilis characterized by a thinner lamina, a less palisade tissue and a moderate cuticle thickness adapt to the humid and cool habitat in a middle mountain.
选取亚热带东部替代分布明显的壳斗科6种常绿树种(青冈、小叶青冈、细叶青冈、苦槠、甜槠和石栎)的11个种群叶片进行生态解剖,并用SPSS, DCA和TWINSPAN比较分析,结果表明:①尽管6种11个种群叶的结构仍属中生叶型,但有着不同程度的趋旱适应;②叶的解剖性状在属间、种间和种群间均存在着不同程度的差异,这是它们适应各自生境的结果,青冈和石栎的种内差异较大,反映出它们对环境变化有较强响应能力;③叶片的不同解剖性状在属、种类和种群间的变化并不同步,其中叶片和栅栏组织厚度等性状差异突出,反映它们更易受环境的饰变,是生态适应性状,而海绵组织、下角质膜,特别是下表皮厚度等性状差异较小,显示出这些性状的稳定性,可以认为是系统演化性状;④苦槠、青冈具有较厚的叶片、栅栏组织、角质膜和发达输导和机械组织,苦槠还具有复表皮,表现出对旱化生境的适应;甜槠尽管具有复表皮和较厚的叶片,但这是海绵组织增厚的结果,是对中生生境的适应;小叶青冈和细叶青冈具有较薄的叶片和栅栏组织、角质膜厚度居中等特点,可能是对中山凉湿生境的适应。
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Large South American evergreen tree trifoliate leaves and drupes with nutlike seeds used as food and a source of cooking oil.
南美洲一种高大的常绿树,三叶叶片,其核果有像干果一样的种子,可食用或生产食用油。
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Any of various chiefly tropical evergreen trees, shrubs, or woody vines of the family Palmae, characteristically having unbranched trunks with a crown of large pinnate or palmate leaves having conspicuous parallel venation.
棕榈科植物棕榈科的各种主要的热带常绿树、灌木或木质藤本植物,特点为有无分支的树干,其顶端集生羽状或掌状的树叶,并带有明显的平行叶脉
- 推荐网络例句
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But we don't care about Battlegrounds.
但我们并不在乎沙场中的显露。
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Ah! don't mention it, the butcher's shop is a horror.
啊!不用提了。提到肉,真是糟透了。
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Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.
Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。