plant geography 中文意思是什麼
plant geography
解釋
植物地理學-
Plant endemism is the key problem in floristic study. analysis of endemism in a flora has significant implications in demonstrating floristic richness and diversity, the relationship between plants and their environment, and also in conserving biodiversity of the flora. in view of the situation that most of the past studies on endemism were qualitative, this study is the first tentative approach to the introduction of quantitative indices to the analysis of floristic endemism, with an purpose to push the study of endemism from qualitative to quantitative. four quantitative indices are introduced, i. e. level of endemism ( l ), coefficient of endemism ( c ), degree of endemism ( d ) and general index of endemism ( a ). mathematical formulae have been given to each of the above indices and explanations for them have been presented, and the scope of their use in floristic studies has been delimited and exemplified in this paper. the result shows that they are of good applicability. the proposed indices embody full information of plant systematics and plant geography. with the aid of qualitative analysis, the application of the proposed indices will improve the comparability and precision of endemism study in floristics
過去有關特有現象的研究主要限於定性的分析，可比性和精確性較差.該文嘗試引入特有現象的定量化指標，以推動特有現象的分析研究從定性水平向定量水平邁進.所引入的4種定量化指標分別是：特有水平、特有系數、特有度以及特有綜合指數.對每種量化指標都給出了數學表達式，說明了其區系學意義，例證和界定了這些指標在植物區系分析中的應用，結果表明，它們有良好的適用性.這些指標充分地包含了植物系統學和植物區系學的信息.結合定性分析，這些指標的應用將增強植物區系研究的可比性，使植物區系特有現象的分析達到更精確的水平 -
In the 25 species examined, the epidermal cells fall into four types in terms of their shape and the pattern of the anticlinal wal ls. these types correlate to some extent with features of gross morphology, palynology and plant geography of the ten genera studied. features of cuticular membrane can be used to differentiate clearly the two genera physochlaina and hyoscyamus, and some species within them
顛茄葉表皮細胞形狀和垂周壁式樣在一些屬和種中有一定的規律性，並與外部形態、孢粉學性狀或地理分佈相關；葉片表面角質膜的特徵對屬和種的劃分也有一定意義。 -
The aim of this work is to have a better understanding of the structure, differentiation and phylogenetic relationship of the tribe hyoscyameae in the solanaceae using evidence from leaf epidermis, seed morphology, palynology, embryology, floral organogenesis, trnl - f and its sequences, and plant geography. the results are summarized as follows : 1. leaf epidermis leaf epidermis of 21 species in seven genera of the tribe hyoscyameae and four species in four related genera was investigated under both light microscope ( lm ) and scanning electron microscope ( sem )
解剖學在光學顯微鏡和掃描電鏡下，觀察了茄科天仙子族（ hyoscyameae ） 7屬21種及鄰近4屬4種共25種植物的葉表皮特徵，結果表明：氣孔器在各種植物的上、下的表皮均有分佈，多為無規則型，也有不等細胞型；葉表皮細胞形狀有不規則形、十字形、近長圓形和不規則多邊形，垂周壁較平直或各種波狀。 -
Tianjin lutai coating additives plant was built and it 1999, tang jin geography at the junction of the bohai bay, convenient transportation, economic development, professional development is the production of high - grade coatings businesses
唐山市蘆臺宏良塗料助劑廠始建於1999年，地理位於渤海灣津唐交界處，交通便利，經濟發達是專業研發生產中高檔塗料的企業。 -
So we have a problem, which is most urgent to resolve ? the economical feasibility of the construction program of the qingshan wind force power plant. the research of this thesis aims to discuss the economic character of qingshan wind force power plant through the analysis of baicheng ’ s geography and economical environment and combine with the national policy of exploring the renewing resources
本論文對青山風力發電場項目用電市場前景、投資及融資情況進行了系統分析，並就青山風電場項目建設所產生的經濟效益和社會效益進行全面分析，以確定白城青山風電項目建設的經濟可行性。 -
Abies yuanbaoshanensis having survived the quaternary period ice - age is significant not only to studying the occurrence and evolution of the chinese ancient south plant flora but also to the ancient climate and geography. especially, it has the scientific value of inquiring into the climate of the quaternary period ice - age and is called live fossil because it could provide the basis for studying the climatic change and the changes of plant
元寶山冷杉是第四紀冰期倖存下來的瀕危物種，在廣西的發現，對于研究我國南方古代植物區系的發生和演變，以及古氣候、古地理有重要意義，特別是對第四紀冰期氣候的探討有學術價值，它是研究氣候變化和植物變遷的依據，是活化石。
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