植物葉化石 的英文怎麼說
中文拼音 [zhíwùyèhuàdàn]
植物葉化石
英文
phyllite- 植 : Ⅰ動詞1. (栽種) plant; grow; cultivate 2. (樹立) establish; set up Ⅱ名詞(姓氏) a surname
- 物 : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
- 石 : 石量詞(容量單位, 十斗為一石) dan, a unit of dry measure for grain (= l00 sheng)
- 植物 : plant; flora; botany; stray; greenery; phyton; phytum; phyta; phyt ; phyto ; phyte : 草本植物 her...
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Climatological data from fossil pollen, leaves and wood indicate that the cretaceous forests of northern alaska consisted of a mixed canopy that included deciduous conifers with an understory of flowering plants, ferns and cycads
由花粉、葉子和木材化石?集到的氣候資料顯示,阿拉斯加北部的白堊紀森林有混合型林冠,包括了落葉針葉林以及林下的開花植物、蕨類和蘇鐵。Fifty - one and nineteen compounds were detected respectively from the volatile extracts of the fossils from miocene leaves of metasequoia glyptostroboides and early cretaceous seed cone of pityostrobus spp. by gas chromatography - mass spectrometry ( gc - ms ) analysis
摘要採用氣相色譜質譜聯用分析技術從中新世水杉葉片和白堊紀松型球果兩種裸子植物化石中分別鑒定了51個和19個揮發性成分,類型涉及烷烴、烷烯、烷醇、長鏈脂肪酸及其酯、鄰苯二甲酸酯、菇類和芳香族化合物。Based on the reseaching of lycoris leaf micro - morphology characters by sem scanning, light microscope viewing and using paraffin method in the article, we try to provide the proofs of experiment and the efffective characer indexes to discuss the system and evolution of the lycoris. we find these microscope characers through reseach are as follows : the arrangement type, density and the length of stoma ; the shape and length of the epidermal cells ; the ridge of epidermis ; the transverse shape of leaf ; the number of the vascular bundle ; the style of vessel arrangement of vascular bundle in the middle vein ; the layers of palisade tissue ; the ratio of the thicken of palisade tissue to that of spongy tissue ; the angle number of the middle leaf ; the type of ventilating cavity etc. these characters are different from those of species in lycoris, meanwhile these characters are similar to those of some species in lycoris. so these characters can be used as the character indexes for differentiating species and reseaching systematic evolution of lycoris ; we can divide lycoris into two subgenus by these characteristic indexes : the species of one subgenus are l. aurea ( l " her. ) herb, chinensis traub, l. caldweuii traub, l. anhuiensis y. hsu et q. j. fan, l. longituba y. hsu et q. j. fan ; the species of another subgenu s are l. houdyshelii traub, l. albiflora koidz.,
研究結果表明:葉表皮的氣孔排列方式、長度、長寬比,脊的明顯與否,葉表皮上的顆粒紋飾的多少、大小,葉表皮細胞長度、長寬比、垂周壁形狀,上部葉柵欄組織細胞層數、葉的維管束數、葉中脈導管組成數目,氣腔類型,葉的脊部遠軸面的角數,葉緣的形狀等這些特徵在種間存在差異,同時,在有些種之間又有相似性;因此,這些特徵既可以作為區分種的證據,又是研究石蒜屬植物系統演化的性狀指標,根據這些性狀指標,可以將石蒜屬植物大致分為兩個亞屬:一是忽地笑、中國石蒜、短蕊石蒜、安徽石蒜、長筒石蒜,二是江蘇石蒜、乳白石蒜、石蒜、玫瑰石蒜、稻草石蒜;在兩個亞屬中其中有些種如忽地笑、長筒石蒜、中國石蒜的親緣關系則更近些。The comparison of stomatal parameters in leaf cuticles between two fossil angiosperms from the pliocene in west yunnan and their nearest living equivalent species indicates a little higher atmospheric co2 level at that time than the present, while carbon isotopic composition of fossil cuticles demonstrates much higher carbon isotopic discrimination and slight lower water use efficiency, showing a warmer and wetter climate than today
摘要對滇西騰沖新近紀兩種被子植物葉片及其現存對應種的氣孔參數和碳同位素組成的綜合分析表明:當時的大氣co2濃度略高於現在水平;化石種的碳同位素分餾值高於現存對應種,但水分利用效率低於現存對應種;這證明當時的氣候條件比當前更為溫暖濕潤。分享友人