d species 中文意思是什麼

d species 解釋
低價值魚種
  • d :
  • species : n. 〈sing. , pl. 〉1. 種類；【生物學】（物）種。2. 【邏輯學】種。3. 【原子能】核素。4. 【法律】形式。5. 【宗教】聖餐物。
  1. Sporulation on cultures of both millet species lasted for 6 days on non - nutritional substrate at 25c and l : d 12 : 12. compared to 2. 3 0. 3 x104 conidia discharged from each cadaver of myzus persicae adults killed by p. delphacis with a < 60 - h duration of sporulation, 5. 6 - 1 a and 3. 7 - 4. 7 times more conidia were discharged from each of the broomcorn millets cultured for 5 - 11 days and from each of the foxtail millets cultured for 3 - 11 days, respectively, with an over doubled sporulation duration

    相對于新鮮蚜屍2 . 3 0 . 3 10 ~ 4個孢子/頭的平均產孢量和60h的有效產孢時間， 5 11d黍米培養物的產孢潛能高出5 . 6 7 . 4倍， 3 11d的粟米培養物的產孢潛能則高出3 . 7 4 . 68倍，有效產孢時間均延長1倍以上。
  2. The identity of delphinium purpurascens and the reinstatement of the specific status of d. conocentrum, two himalayan species in the ranunculaceae

    鐵線蓮屬植物的引種栽培研究初報
  3. The average species similarity was 0. 68 between semi - quantitative ( kick sampling plus d - frame net sampling ) and quantitative samples in the same site, higher than that of 0. 56 in the lotic water, 0. 45 in the lentic water. 3. no significant difference was found in metrics calculated from the data of quantitative and semi - quantitative samples in the same site respectively

    從種類相似性看，同一樣點半定量樣本（踢網樣加d形抄網樣）與定量樣本（索伯網樣）之間的相似性最高，平均為0 . 68 ，高於急流棲境中定量樣與半定量樣的種類相似性0 . 56 ，以及靜水-緩流棲境中，定量樣與半定量樣的種類相似性0 . 45 。
  4. In lotic water, there were no significant difference in number of species and individuals between quantitative ( surber net ) and semi - quantitative ( kick sampling ) samples, although more species and individuals were collected by semi - quantitative than quantitative sampling. in lentic water, the significant difference was existed in the number of species ( z = - 2. 032, p < 0. 05 ), but it showed no significant difference in individuals between quantitative and semi - quantitative ( d - frame net ) samples. 2

    急流棲境中，半定量樣本（踢網樣）的個體數和種類數通常高於定量樣本（索伯網樣） ，但種類數無顯著差異；靜水-緩流棲境中，半定量樣本（ d形抄網樣）的個體數和種類數一般也高於定量樣本，且種類數有顯著差異（ z = - 2 . 032 ， p 0 . 05 ） 。
  5. Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features

    前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切
  6. Dijk e, eck n d. effects of mycorrhizal fungi on in vitro nitrogen response of some dutch indigenous orchis species. can j bot, 1995, 73 : 1203

    郭順星，徐錦堂.促進天麻等蘭科植物種子萌發的真菌發酵液的抑菌作用.中國藥學雜志， 1990 ， 25 （ 4 ） ： 200
  7. " the cape d aguilar marine reserve is a spawning and nursery ground of fishery resources. various gorgonian corals, stony corals and other rare species are found in the area. thus, there is a need to prohibit certain activities to conserve the diverse marine life there, " the spokesman said

    鶴咀海岸保護區是多種魚類的繁殖及哺育場，該處亦有各類柳珊瑚和石珊瑚，以及其他稀有品種，因此，有必要禁止在鶴咀海岸保護區內進行某些活動，以存護該區域內的多樣化海洋生物。
  8. In this dissertation, the interactive system of delphastus catalinae ( horn ), its preys and competitor was studied, including comparison between alternative preys and natural prey consumed by d. catalinae ; the system of d. catalinae and its preys ; morphology comparison between d. catalinae and its competitor serangium japonicum chapin ; biology, ecology and predation of s. japonicum ; and also the interspecies competition between d. catalinae and s. japonicum. 1. besides whitefly pests, d. catalinae could also feed on two species of alternative preys : tetranychus nr

    Fijiensis和桃蚜myzuspersicae （ sulzer ） ，並在實驗室條件下，以自然獵物煙粉虱bemisiatabaci為對照，研究了替代獵物對小黑瓢蟲的發育、存活、繁殖及對實驗種群增長的綜合影響，結果表明： （ 1 ）小黑瓢蟲以蚜蟲為獵物時，成蟲不會產卵，但可延長成蟲的壽命；以紅蜘蛛為獵物時，成蟲可產卵並可完成整個世代。
  9. Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio. the result shows that : symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong, and distribution is wide. meanwhile, go rdonia acuminata, castanopsis fargesis and pinus massoniana specialized at some d egree in resource utilizationm, their distribution is limited. especially, the ju venile of pinus massoniana specialized outstandingly. with the devlopment of pinu s massoniana, which is the pioneer population in mt. jinyun, the environment become s unfit to it ' s juvenile. it turns to needle and evergreen broad - leaves mixed fo r est. because the tolerance toward shading of gordonia acuminata is lower than tha t of castanopsis fargesis, gordonia acuminata will be substituted by castanopsis fargesis and other evergreen broad - leaves species are the edificators. the popul ation ' s ability of resource utilization is the inner factor of population distri bution and community succession. the distribution of light and the concentrate of nutrient ( such as n ) is the outer factors of community succession

    對縉雲山森林植被的4個優勢種群3個年齡級生態位寬度進行了研究.結果表明，川灰木利用資源的能力最強、分佈廣，為典型的泛化種.大頭茶、栲樹、馬尾松對資源的利用在一定程度上特化，分佈上有一定的局限性.馬尾松的中齡組與幼齡組特化現象十分顯著.縉雲山森林植被的先鋒種馬尾松的發展，導致環境的改變不適于其幼齡個體的生長，群落演替到針闊葉混交林階段，最後發展為以栲樹等為建群種的常綠闊葉林.種群的資源利用能力，是種群分佈與群落演替的內在原因，光因子和營養元素（如n ）是群落演替的主要外部動力
  10. In this paper, the taxonomical problems of tulipa l. from china were studied based on the results of both the field observation and the examination of herbarium specimens, and the analysis of leaf epidermis morphology, pollen morphology, seed coats micromorphology and comparative embryology. the main results are as follows : ( 1 ) tulipa l. from china is taxonomically revised. there are 16 species distrubuted in china and tulipa kuocangshanica d. y. tan, x. r. li et d. y. hong is described as new

    本文通過野外調查及憑證標本的考證，並結合葉表皮形態、花粉、種皮的微形態及比較胚胎學等方面的觀察，對國產鬱金香屬植物分類中存在的問題進行了研究，主要內容如下： （ 1 ）對國產鬱金香屬植物進行了了修訂，確認了國產鬱金香屬植物共有16種，其中新種1個: tulipakuocangshanicad . y . tanx . r . lietd . y . hong 。
  11. Of the species, . characters of ecology, reproductive biology, genetic diversity, population genetic structure, endangering mechanisms, and sampling strategy have been studied in view of conservation biology. the results may be summarized as follows : by field investigation, we found that the localities recorded for four specimens of d. versipellis and d. pleiantha had disappeared, and most of the present populations are located in protected subforests. the distributional range of d. versipellis has also been reduced greatly, evidently, the number of present populations has decreased, the resources are reduced sharply, and the species are clearly endangered

    從保育生物學的角度，對八角蓮種群生態學和生物學特性、遺傳多樣性水平和遺傳結構、瀕危機制及保育取樣策略進行了研究，結果如下：通過野外調查發現，原標本記載的一些八角蓮和六角蓮種群已難以找到，該類群目前多分佈於自然保護區外圍次生林地帶，分佈范圍明顯縮小，現存群體的規模也明顯減少，資源量貧乏，物種處于瀕危狀況。
  12. Comparative studies on the physioecological traits of photosynthesis, transpiration and stomatal conductance in four congeneric species, mosla hangchowensis ( m. h ), mosla scabra ( m. s mosla chimnsis ( me ) and mosla dianthera ( m. d ) were investigated under controlled soil water status in this paper

    本研究通過對控制土壤水分條件下杭州石薺? （ moslahangchowensis ） 、石薺? （ moslascabra ） 、華薺? （ moslachinesis ）和小魚仙草（ mosladianthera ）四個同屬近緣物種的光合、蒸騰和氣孔等生理生態特性的研究，分析了它們對變化的環境產生的功能可塑性變化，解釋了在進化過程中這些近緣物種從瀕危到廣布的差異。
  13. Chlorophyll content of all the species expect me show the same rule as the plants locating from sun leaves to shade leaves with the changing soil water content. 6 rewatered after extreme drought, the photosynthetic rate of m. h, m. c and m. s increase evidently, showing " compensation effect ", but there have differences between these three species. contrarily, when rewatered after extreme drought, the photosynthetic rate of m. d

    6 、杭州石薺? 、華薺?和石薺?經極端乾旱后澆水，光合速率均明顯增加，表現出「超補償現象」 ，但三者之間存在一定的差異；小魚仙草乾旱條件后澆水，光合速率顯著下降，說明該物種在比較乾旱條件下也能夠較好地生存，但對極端乾旱的耐受能力不如杭州石薺? 。
  14. We analyzed the alternative in functional phenotypic plasticity responding to variational entironments, consequently, we interpreted the difference between endangerment and wide - distribution of these closely related species, and the results showed : 1 all of the daily changes of photosynthetic rate responding to different water status show " double apices " except m. d, the daily changes of photosynthetic rate in m. d shows " simple apices " responding to arid soil water content, while " double apices " responding to the other soil water content. emerging time of daily maxim of pn is difference between species and between treatments. daily course of transpiration and stomatal conductance of these for species all show " double apices ", but the emerging time of daily maxim of transpiration rate and stomatal conductance rate are all different between species

    結果表明： 1 、除小魚仙草外，四物種的光合速率日變化在不同水分梯度下均表現出「雙峰型」 ，小魚仙草的光合速率日變化在於旱時表現出「單峰型」 ，其餘水分梯度下表現出「雙峰型」 ，種間和梯度間日最大光合速率出現時間有一定的差異；四物種蒸騰速率和氣孔傳導力日進程也表現出「雙峰型」 ，但種間日最大氣孔傳導力和蒸騰速率出現的時間也存在一定的差異。
  15. The area of plot sampling in every typical community locality on the small protected area in huangyinling were 1 600m2. the site factors were investigated by the method of forest community investigation, and the species, body number, height, d. b. h., coverage of herbage and so on were recorded

    在黃茵嶺生態保護小區中亞熱帶常綠闊葉林中設置樣地，每個群落的樣地調查面積均為1600m ~ 2 ，採用森林群落的調查方法，調查立地因子，記錄群落植物的物種名、個體數、高度、胸徑、草本層蓋度等。
  16. 1. taxonomy variation patterns of all available characters in ephedra from china are studied both in the field and in herbarium. thirteen species are recognized from china, among which, ephedra rituensis y. yang, d. z. fu et g zhu is described new to science

    1 、分類學從性狀變異式樣的分析入手，結合標本館工作和野外調查，確認了中國麻黃屬植物共有13個種；合併了麗江麻黃（ ephedralikiangensis ） 、雌雄麻黃（ e
  17. ( d ) it is strongly suggested that subfamily mirinae should be revised because its remarkable heterogeneity. 3. for the first time, cyt b gene 432bp sequences of species belonging to genera of 5 subfamilies and 2 outgroup species are obtained in this research which is more than 50 % of 64 species involved in the experiments

    3 、首次在盲峙科昆蟲中通過特異引物擴增和基因測序的研究方法獲得了盲峙科5個亞科門個屬34種盲峙和2個外群種類的cytb基因433hp序列，占被試23個屬64種盲峙的50以上。
  18. Qualitative and quantitative investigation ( visual encounter surveys ) of terrestrial mollusca were carried out in each sampling site of mangshan nature reserve and babaoshan of guangdong. all terrestrial mollusca in each sampling site were collected and identified. a list of the name of the species of terrestrial mollusca, margalef species richness index ( d _ ( ma ) ), shannon - wiener index ( h " ) and pielou evenness index ( jsw ) were used to analyze their biodiversity

    對各個採集點的陸生貝類不但進行了定性調查，而且進行了定量調查（ ves法） ，對調查採集到的陸生貝類物種進行編目，並採用margalef豐富度指數（ d _ （ ma ） ） 、 shannon - wiener多樣性指數（ h 』 ） 、 pielou的均勻度指數（ jsw ）對陸生貝類多樣性進行了分析。
  19. These diversity indexes indicate a trend - the more abundant and even the components and more complicated the habitats of the community, the higher value of these diversity indexes whether margalef species richness index ( d _ ( ma ) ), shannon - wiener index ( h " ), or pielou evenness index ( jsw ) were used to analyze the biodiversity of terrestrial mollusca. the change of shannon - wiener ( h " ) is accordant with species and margalef species richness index ( d _ ( ma ) )

    兩地區陸生貝類多樣性指數h夕與多樣性指數s 、苗劍的變化相一致，且s 、 h夕、或峨的值以莽山的紅旗橋和八寶山的五里坑為最高;陸生貝類均勻度指數（ js刃不受豐富度指數影響，但是均勻度指數影響多樣性指數h ， ，一般來說js ，高， h ，越高，但也有例外情況。
  20. Further more, the size of primmorphs ( average 90 - 100 m ) from s. agminata is much smaller than that of primmorphs from s. dommucula and d. avara ( l - 3mm ), which may be sponge species - dependent

    因此，進一步的研究以繁茂膜海綿（偽腳eniacidonperleve ）為研究對象，對海綿中真正具有分裂增殖能力的全能細胞原細胞進行富集分離。
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