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vascular plant 【植物;植物學】維管植物 (= tracheophyte...

vascular ray

Humic acid usually formed from phytoplanktons , zooplanktons , and epicontinental vascular plants through biodegraded and condensated reaction . krogen derived either from humic acid or from the reworking materials . differing from humic acid and kerogen , bc was produced from the incomplete combustion of fossil fuels and biomass 并且不同的有機質有不同的來源,腐殖酸通常是浮游生物和陸生的高等植物經過生物降解、聚合等過程形成的;干酪根是腐殖酸進一步演化而成,既有原生的也有異地遷移而來的;碳黑則不同于腐殖酸和干酪根,它是生物質和煤、油等化石燃料經過燃燒產生的。

In this dissertation , the author analyzed plant biodiversity in yunmengshan forest region with field survey on plant species and forest vegetation , the results show that : the vascular plants in yunmengshan forest region include 548 species ( variation ) which belong to 319 genera , 98 families , the flora geographical composition are complex , the dominant characteristics of flora are temperate zone plants which account for 55 percent , herbaceous species occupy 75 percent exclusively . evaluating the threatened hierarchy of plants in yunmengshan forest region , the results show that the number of critically endangered species is 7 , endangered species isll , vulnerable species is 53 , lower risk species is79 , safty species 376 本文在對云蒙山林區的植物物種、植被進行調查的基礎上,進行植物多樣性分析,研究結果如下:云蒙山林區共有維管束植物98科319屬548種和變種,地理成分復雜,包括中國全部屬的15個分布區類型,區系組成以溫帶成分為主,占55 ;生活型譜中,草本植物種類占絕對優勢,比例為75 . 3 ;通過瀕危評價,得出云蒙山林區植物極危種7種,瀕危種11種,漸危種53種,敏感種79種,安全種376種。

Researches indicate that , within a background of less complex , cosmopolitan zosterophyll and trimerophyll taxa , the posongchong flora has some plants with complex combination of morphological and structural characters , showing more advanced level of fertile and sterile organs than those found in contemporaneous land vascular plants from laurussia 研究表明坡松沖植物群在某些簡單的、常見的工蕨類植物和三枝蕨類植物組成的背景下,含有具復雜形態和結構特征的植物類群,顯示了較勞亞大陸同期陸生維管植物更進化的營養器官、生殖器官分異的水平。

In hong kong , there are more than 3 , 100 species of vascular plants - about 2 , 100 are native ; some 50 species of mammals ; 450 species of birds ; 80 species of reptiles and more than 20 amphibian species . insect diversity is also very high with more than 230 species of butterflies and 100 species of dragonflies 香港有維管束植物逾3 , 100種(其中約2 , 100種為本地品種) ,哺乳類動物約50種,鳥類約450種,爬蟲類動物約80種,兩棲類動物逾20種。昆蟲的品種亦十分繁多,有超過230種蝴蝶及100種蜻蜓。

The origin and evolution of land plants was an important event in the history of earth life and has affected all other lives on the earth and global environment . during the past two decade , the new discoveries of fossil plants microfossils and megafossils from the mid - ordovician through all silurian to the lower devonian improved knowledge of the origin of land plants , provided a time framework of the basal groups for the land plants and the early evolution diversity of vascular plants . three new plant based epochs have been recognized . on the other hand , molecular sequence studies have provided insights into the phylogeny and early branches of land plants . a phylogenetic tree has been established by the joint of a study of comparative morphology and gene sequences . this paper summarizes recent advances and new knowledges , comments on the phylogenetic studies based on the cladistic analysis 陸生植物的起源和演化是地球生命中的重大事件,它影響到地球上所有的其他生命和全球環境。在過去的20年中,從中奧陶世歷經整個志留紀至早泥盆世的巖層中,化石植物微化石和大化石的新發現改變了人們對陸生植物起源的認識,并且為陸生植物和維管植物早期演化分異提供了基部類群分化的時間框架。據此人們識別出地史中的3個陸生植物的時代:始胚植物時代始維管植物時代和真維管植物時代。

The survey done by wwf scientists in the 1 , 800 square kilometre tesso nilo forest shows that it contains up to 218 vascular plant species in just one single 200 square metre plot . this is nearly twice as high as the previous number of 114 species recorded using this same technique elsewhere in sumatra 世界自然基金會的科學家在面積達1 , 800平方公里的tesso nilo內發現,僅僅在200平方米的范圍內,已有218種維管植物,與早前在蘇門答臘其他地方以同樣技術找出的114種維管植物相比,數量幾乎多出一倍。

A wide variety of wild plants and animals , including over 3 , 100 species of vascular plants , some 50 species of mammals , 450 species of birds , 140 species of freshwater fish , 230 species of butterflies and 100 species of dragonflies , are found in hong kong 在本港可以找到的野生動植物種類繁多,當中包括超過3100種維管束植物、約50種哺乳類動物、 450種雀鳥、 140種淡水魚、 230種蝴蝶,以及100種蜻蜓。

There are more than 3 , 100 species of vascular plants , some 50 species of mammals , 450 species of birds , 80 species of reptiles , more than 20 amphibian species , over 230 species of butterflies and 100 species of dragonflies 本地有維管束植物逾3 , 100種,哺乳類動物約50種,鳥類約450種,爬蟲類動物約80種,兩棲類動物逾20種,另有超過230種蝴蝶及100種蜻蜓。

204 species of vascular plants were recorderd and 10 vegetation types ( including 3 subtype ) were classified . one vegetation type in an area stands for the total performance of interactions by many environmental factors 本研究共記錄本區204種維管束植物,植群藉由矩陣群團分析可將之區分為10種植群型,其中包含了3個植群亞型。

The surrounding subtropical rainforest has over 2 , 000 species of vascular plants and is home to the typical wildlife of the region : tapirs , giant anteaters , howler monkeys , ocelots , jaguars and caymans 周圍的亞熱帶雨林中有2000多種維管植物,并且棲息有許多典型的熱帶生物,包括貘、大食蟻獸、吼猴、豹貓、美洲虎和美洲鱷魚。

Hong kong is endowed with a rich variety of flora and fauna . there are some 2600 vascular plant species , 450 species of birds , 255 species of butterflies , 23 species of amphibians and some 80 species of reptiles 香港擁有豐富的動植物資源,當中包括大約2600種植物450種雀鳥225種蝴蝶23種兩棲動物以及80種爬蟲類。

Species of vascular plants , both native and introduced . various conservation measures have transformed the formerly bare hillsides and slopes into areas with trees of local and introduced species 本港在采取各項自然護理措施后,以往是不毛之地的山坡,現已種植了本地及外來樹木。

There are 1 435 species and varieties , 682 genera and 166 families of vascular plants in yixing , the south part of jiangsu province , mo st of which are small families and small genera 江蘇最南端的宜興地區共有維管植物166科、 682屬、 1435種(含種下分類單位) ,以小科小屬占據優勢。

Pneumatophore ( aerophore ; breathing root ) a specialized negatively geotropic root produced by certain aquatic vascular plants ( especially trees such as mangroves , e . g 呼吸根:指由某種水生維管植物產生的特化的負向地性根(尤其如紅樹,如海桑屬) ,在土壤之上生長良好。

Vascular plants plants containing differentiated cells forming conducting tissue ( vascular tissue , also known as fascicular tissue ) , which comprises the xylem and phloem 維管植物:具有能夠形成體內運輸組織(維管組織:包括木質部和韌皮部)的分化細胞的植物。

The carpel is homologous with the megasporophylls of certain spore - bearing vascular plants ( pteridophytes ) and the ovuliferous scales of gymnosperms 心皮和能產生孢子的維管植物(羊齒類)還有具胚珠的裸子植物的大孢子葉是同源的。

Notes : data from world bank . refer to native vascular plant species , but flowering plants only . these are tentative data and are being finalized 注:世界銀行數據。指維管類植物,僅為開花植物。數據不確定,需進一步核實。

About 3000 species and varieties of vascular plants have been recorded in hong kong , approximately 2000 of which are native and the rest are of exotic origin 已知本港共有超過3000種的維管束植物,其中約2000種是本土的品種。

The species richness of wild vascular plants on the six pre - islands was 126 , 157 , 175 , 189 , 242 , and 254 , respectively 主要表現為森林比重很小,群落多樣性低,撂荒地上處于次生演替初始階段的雜類草草叢占了相當大的比例。