查询词典 Thuidium

The differentiation states of costae indicates the ways they absorb and transport water, and their ability adapting to the dry conditions, which was elucidated by the following examples: Brachythecium plumosum, because of its thin cell-walls in the costae and the absence of hydrome, assistant and steroid cells, can absorb water and nutrition under shady and moist conditions; Plagiomnium rostratum, though often grows in shady and wet condition, has hydrome and steroid cells, a feature similar to those of xeric mosses, which endows it to grow in the conditions with periodical drought stress during its life cycle; Hygrohypnum luridum is characterized by its slender leaves with only one layer of cells, the thin cell-walls, the absence of filaments on the leaf surface, and the fewer layer cells in the costae, the absence of hydrome and steroid cells. These features make it adaptable to aquatic environments. For Pogonatum inflexum and Atrichum undulatum, their ventral surfaces covered with lamella, while for Racomitrium japonicum, Thuidium cymbifolium, Macromitrium ferriei, Diphyscium fulvifolium, Barbula unguiculata and Ceratodon purpureus, their leaves are strongly mammillose or papillos. Such appendiculate structures made them adaptable to thy conditions.

例如，荫湿生环境下的羽枝青藓Brachythecium plumosum，其中肋细胞胞壁较薄，无导水主细胞和副细胞的分化，也没有厚壁细胞分化，能够在阴湿环境下吸收水分和养分；钝叶匍灯藓Plagiomnium rostratum具有与旱生藓类植物相似的中肋结构，叶片较厚，中肋具导水主细胞，中肋背面具厚壁细胞，这些特点使该种藓类植物能够分布于间隙性干旱胁迫的环境中；水灰藓Hygrohypnum luridum叶片纤细柔弱，仅1层细胞，细胞胞壁薄，叶表无附属结构，中肋细胞层数少，无导水主细胞分化，也没有厚壁细胞，这些特点使得水灰藓'能够生长在水生环境中；东亚小金发藓Pogonatum inflerum和波叶仙鹤藓Atrichum undulatum的叶腹面覆盖着栉片，东亚砂藓Racomitrium japonicum、大羽藓Thuidium cymbifolium、福氏蓑藓Macromitrium ferriei、东亚短颈藓Diphyscium fuhifolium、扭口藓Barbula unguiculata和角齿藓Ceratodon purpureus的叶片表面有乳头状突起或疣状物，这些附属结构使它们能够适应于旱生的环境中。

In this subject we maked Hypnum hamulosum and Thuidium cymbifolium as objects to monitor the air pollution of heavy metal and SO2 of Nanjing city using moss bags,combined simulated test and monitoring of natural pollution to discuss the mechanism of mosses to be used as monitor of air pollution of heavy metals.

本课题以弯叶灰藓和大羽藓为研究对象，采用苔袋法对南京地区的大气重金属和SO2污染进行了监测，通过室内模拟培养与室外自然污染监测相结合的方法，对树木附生藓类监测大气重金属污染机理作了初步的探讨。

According to distribution of bryophytes on different substances, the frequencies of Bazzania albifolia, Heteroscyphus coalitus and Homaliodendron scalpellifolium in evergreen broadleaved forests of Daweishan Nature Reserve are highest; those of Macrothamnium macrocarpum, Bazzania fauriana, Ptychanthus striatus, Pogonatum cirratum and Thuidium cymbifolium are higher. Additionally, Aerobryum speciosum, Trachycladiella sparsa, Taxiphyllum subarcuatum, Aerobryidium levieri, Lepidozia wallichiana, and Leucobryum bowringii are relatively common.

根据大围山常绿阔叶林内苔藓植物在不同基质上的生长分布情况，结合其甲凡J}rg另出现的频度可知白叶鞭苔、双齿异粤苔、以及刀叶树平醉是大围山常绿阔叶林内的三大优势种；南木醉、厚角鞭苔、皱尊苔、刺边小金发鲜和大羽醉在大围山常绿阔叶林内出现的频率也很高；此外气鲜、散生粗带醉、钝叶鳞叶鲜、莱氏毛扭醉、瓦氏指叶苔、以及狭叶白发鲜等在大围山常绿阔叶林内也有一定数量的分布。

After extensive survey of species of Takakia, we couldn't have found any individuals because of its limited population distribution, so we decided to add some relevant studies of conservation genetics to make up for the shortage of this project, including the analysis of effect of stand age and management regime on genetic diversity on Thuidium cymbifolium in Western China, and genetic structure of the endangered insular plant Neolitsea sericea on the Zhoushan archipelago. Results showed that the population of T.

藻苔类植物多分布于高山雪域地带，且范围极为有限，课题组经多次野外搜寻，未能采集到活体材料，而课题实施时间仅有1年，因此课题组同时积极开展云杉人工林林下大羽藓遗传多样性恢复的动态变化，以及岛屿地理隔离对濒危物种舟山新木姜子种群遗传结构的影响等研究，以弥补项目实施之不足。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&