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deciduous plant
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  “deciduous plant”译为未确定词的双语例句
     from Late Eocene to Early Oligocene, the vegetation of Yaojie evolved to warm temperate mixed broadleaf and needleaf forests mainly composed of the warm broadleaf deciduous plant, presumably associated with warm and humid conditions.
     始新世晚期至早渐新世则演变为以暖温带落叶阔叶树种为主的针阔叶混交林植被,气候温暖湿润。
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  相似匹配句对
     Love of Plant
     植物之爱
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     PLANT 798
     北京LOFT:798工厂
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     THE STUDY ON BIOMASS OF THE EARLY-SPRING PLANT SYNUSIAS IN DIFFERENT DECIDUOUS FOREST
     不同林型下早春植物层片生物量的分析研究
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     Niche characteristics of plant populations in deciduous broad leaved forest in Baotianman.
     宝天曼落叶阔叶林种群生态位特征
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  deciduous plant
Foliar MeHg concentrations of deciduous plant species were greater than evergreen species.
      
Evergreen, wintergreen, and deciduous plant species were able to sequester nutrients during spring.
      
For both the annual and deciduous plant leaves the principal transport process was found to have the frequency dependence characteristic of 'quasi-dc transport', and this process dominated the observed dielectric disperison in these samples.
      
From an energy budget of a deciduous plant leaf in moderate conditions, entropy fluxes into or out of the leaf due to solar radiation, infrared radiation, evaporation of water and heat conduction are calculated.
      
Entropy budgets of deciduous plant leaves and a theorem of oscillating entropy production
      


It has become a primary goal of modern palaeobotany to study and reconstruct fossil plants in full so far as sufficient evidence is available, because a better understanding of palaeoecology, biology, development and phylogenetic relationships of fossil plants is possible only when they are more completely known. In so doing, the biggest obstacle to overcome is the fragmentary character of the material. Although incompleteness is a common deficiency for almost all fossil groups, the complex life...

It has become a primary goal of modern palaeobotany to study and reconstruct fossil plants in full so far as sufficient evidence is available, because a better understanding of palaeoecology, biology, development and phylogenetic relationships of fossil plants is possible only when they are more completely known. In so doing, the biggest obstacle to overcome is the fragmentary character of the material. Although incompleteness is a common deficiency for almost all fossil groups, the complex life history, the short duration of attachment to the mother plant of reproductive organs (also leaves or branches of deciduous plants) and the open, often indeterminate and modular growth architecture of plants cause the situation much worse than it is in most animal groups (Knoll and Rothwell, 1981). The difficulties in restoring whole plants also lie in the fact that the correlation among organs is always less pronounced in plants than in animals, especially vertebrates. It is even more difficult to reconstruct a fossil plant when its disintegrated portions (or organs) were transported to and deposited in various areas and preserved in different ways. For these reasons, the organ-phenetic classification of fossil plants initiated in the last century still plays an unreplaceable role in recording the fragmentary discoveries. Practically, it is useful in ecological and biostratigraphical studies. Some palaeobotanists even make an attempt at exploring the potential evolutionary or phylogenetic implication of the isolated organs, particularly the reproductive organs, including the important works of Chaloner (1967), Hickey and Doyle (1977) and Meyen (1984). The disadvantage is, however, obivious as heterobathmy is so common that it is usually impossible to envisage the whole-plant based on the limited information obtained from isolated organs. In order to study and reconstruct fossil plants in part or in full, it is necessary to obtain an abundant material by mass collecting. Most ideal are plant fossils preserved in situ or those which have suffered little transportation. The highly valuable specimens are those which bear intact ovules, spores or pollen, or two or more organs in organic connection. Palaeobotanists also take morphological consistency, and similarity in cuticular structure of the associated isolated organs as the important evidence. The discovery of pollen grains in the micropyle or pollen chamber of gymnospermous ovules usually provides a sound basis for linking the pollen-bearing organs with the ovulebearing ones (Zhou, 1983a). The recurrent occurrence of the same organ-assemblage or of different organs in the same plant assemblage in different localities may be regarded as evidence in a lower degree of certainty. Besides the organic reassembling of the whole fossil plants, palaeobotanists also aim at uncovering the full range of their variation. According to the principle of heterochrony (Rothwell, 1987), such variation may be served for phylogenetic interpretation of fossil plants. Futhermore, a full understanding of the morphological variation would possibly prevent specific (or generic) determination of fragmentary specimens from uncertainty and incorrectness in a greater degree and would materially lessen the unnecessary inflation of taxa. There is no doubt that a more completely known fossil plant would contribute much to our knowledge of classification and phylogeny of plants. Both the dramatic discoveries of pteridosperms and progymnosperms are well-known examples. It is obvious that such fossil plants would also provide the basis for biological and ecological interpretation. In this sense, they may be considered as more or less entire biological entities rather than simple assemblages of isolated plant debris. It is expected that major progress in palaeobotany will be made in China as more and more whole fossil plants are studied and reconstructed.

尽最大努力、利用一切有效手段对古植物进行整体研究和重建已成为现代古植物学的一个首要任务,因为只有这样才有可能在比较充分的基础上来探讨古植物的生态、生物学性质、个体发育和系统发育关系。由于植物本身的特殊性,材料的不完整性更为严重。自上世纪以来开展的器官表型分类仍然在古植物学中有着不可替代的价值,有些学者甚至把它作为植物进化的证据。不过,由于植物性状的异级性而使结论的可信程度大大降低。本文对古植物重建的方法据引实例作了综述,对重建的意义也作了较深入的讨论。

According to a prelminary investigation on natural plant resources in the limestonearea of Guangdong province,there are 467 species in 116 families that can be used for ornamentalcultivate-purpose.The calcipetes is the main element of the vegetation in the area. As for thebiological and morphological characters,these plants always have strong vitality and small leaveswith thick cuticle and some of them are thorny or succulent plants. With the purpose of usage,theseplant resources can be divided...

According to a prelminary investigation on natural plant resources in the limestonearea of Guangdong province,there are 467 species in 116 families that can be used for ornamentalcultivate-purpose.The calcipetes is the main element of the vegetation in the area. As for thebiological and morphological characters,these plants always have strong vitality and small leaveswith thick cuticle and some of them are thorny or succulent plants. With the purpose of usage,theseplant resources can be divided into seven groups.They are ornamental vines,sciophytes(includingsucculents)and orchids.Plants in this limestone area can be devided into two distribution zones. Oneis the southern area to the line from Yingde to Huaiji county at about 24°N latitude and the other isthe northern area to that line,In the southern zone,plants are always evergreen. Opposite to that,deciduous plants are more abundant in the northern area. But species in the southern area is poorbecause the vegetation was destroyed.We can find that the distribution and population of the nativeplants is close related to the natural vegetation zone and condiction of vegetation where they exist.

通过对广东省石灰岩地区植物的野外调查,初步发现该地区可作观赏用途的野生植物有467种,分隶于116科.该地区野生植物资源在生物学特性上有其特殊性,喜钙植物是构成广东石灰岩植被的主要成份.从观赏用途角度出发,该地区观赏植物资源可分为观赏蕨类植物、盆景树桩植物、绿化树种及攀援植物、野生花卉植物、阴生及肉质植物和兰科观赏植物七大类.广东石灰岩观赏植物可分成两个分布区域,即英德至怀集一线以南和以北两个主要分布区.在该线南部地区以常绿植物为主,北部地区有较多的落叶植物;此线以南石灰岩区因植被受破坏严重,种类较贫泛.广东石灰岩地区观赏植物的分布与所处的自然植被带及石灰岩植被的发育和保存状况有密切联系.

This paper includes a systematic analysis and correlation study on the sporo-pollen assemblages, stratigraphic sequence and geochronology of the Zhuerzhuang Red Bed Sections in Yaone, Gansu. From the bottom to the top of the Zhuerzhuang section there are three sporopollen assemblages: ① Liqudambarpollenites - Meliaceoidites assemblage, which belongs to Early Mid Eocene; ② Saliaxipollenites-Celtis pollenites-Fraxinoipollenites assemblage, which may be assigned to Mid -Late Eocens; ③ Quercoidites - Saliaxipollenites-...

This paper includes a systematic analysis and correlation study on the sporo-pollen assemblages, stratigraphic sequence and geochronology of the Zhuerzhuang Red Bed Sections in Yaone, Gansu. From the bottom to the top of the Zhuerzhuang section there are three sporopollen assemblages: ① Liqudambarpollenites - Meliaceoidites assemblage, which belongs to Early Mid Eocene; ② Saliaxipollenites-Celtis pollenites-Fraxinoipollenites assemblage, which may be assigned to Mid -Late Eocens; ③ Quercoidites - Saliaxipollenites- Fraxinoipollenits assemblage,which may belong to Late Eocene-Early Oligocene. The results of this study show that, the geological age of the Red Bed section belongs to Eocene-Early Oligocene; the Eocene sporopollen assemblages of Yaojie are approximately similar to those of the East region and the West region of China, which indicate subtropical broadleaved deciduous forest mainly composed of the subtropical and warm temperate taxa, and burning hot climate; from Late Eocene to Early Oligocene, the vegetation of Yaojie evolved to warm temperate mixed broadleaf and needleaf forests mainly composed of the warm broadleaf deciduous plant, presumably associated with warm and humid conditions.

对窑街朱儿庄红层的孢粉和地层层序及时代进行了系统分析与对比研究。在朱儿庄红层剖面中划分出3个孢粉组合:①枫香粉属-楝粉属组合,时代为早-中始新世;②柳粉属-朴粉属-粉属组合,属始新世中、晚期;③栎粉属-柳粉属-粉属组合,属晚始新世-早渐新世。研究表明:窑街地区朱儿庄红层始新世孢粉组合与中国东、西部地区孢粉组合相似,均发育以亚热带和暖温带植物为主的亚热带型落叶阔叶林,气候炎热;始新世晚期至早渐新世则演变为以暖温带落叶阔叶树种为主的针阔叶混交林植被,气候温暖湿润。

 
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