species stage 中文意思是什麼
species stage
解釋
種階梯-
The result shows that the life cycle of all the species comprises a unicellular amoeboid or swarm cell stage, a multinucleate plasmodium stage and a sporulation stage
結果表明，生活循環均包括單核的黏變形體或游動胞、多核的營養體原質團以及形成孢子階段。 -
At the earliest developmental stage of the myxomycetes, the un - nucleate amoeboid or swarm cells of all the species are similar to each other in the aspects of morphology, structure and habit
在孢子萌發后的最初發育階段中，所有黏菌的單核黏變形體和游動胞在形態、結構和習性等方面均相似。 -
Three methods, namely, community species composition similarity analysis, community composition similarity analysis, and community characteristic similarity analysis, were employed to study the similarity of insect pest - natural enemy communities of three rice types ( early rice, middle - season rice and late rice ) and their three development stages ( tilling stage, boot stage and milk stage ) in the yangtze - huaihe region of anhui province
摘要採用群落種組成相似性分析、群落組成相似性分析和群落特徵相似性分析3種方法，研究了安徽江淮地區早稻、中稻、晚稻3種稻型及分蘗、孕穗、乳熟3個生育期害蟲天敵群落的相似性。 -
Each series in the new framework represents approximately the same length of the time and the stage boundaries are defined by significant bio - events as well as cosmopolitan or intercontinental species of trilobites
各統的時間跨度大體相等，階的界線採用重要的生物事件或具有全球對比意義的物種定義。 -
The density with the biodiversity increasing shows " m " model. ( 3 ) the correlation analysis shows : elevation, slope, development stage and biomass are main factors which affect the biodiversity pattern in the research region. the biodiversity of the quercus aliena var. acutesrata community shows the patterns with the elevation and slope affecting : on sunny slope, the species diversity increases with the elevation increasing below the attitude of 1640m and its climax is at this attitude ( the diversity index h = 1. 68 ), upward this point, the diversity index descends slowly. the evenness shows ascend trend with the elevation upward, its climax point at 1800m ( the evenness index jsw = 0. 78 ), then descending after this point
（ 5 ）通過分析，銳齒棟群落生物量與生物多樣性呈現如下關系:在海拔1500一170枷范圍內，銳齒棟群落生物量與物種多樣性之間呈單峰曲線關系;在海拔1700一1900m范圍內，生物量與物種多樣性之間呈不明顯的波動關系;在海拔1900一2100m范圍內，生物量隨物種多樣性的增加而增大，通過對不同高程內生物量與物種多樣性分析發現，隨著海拔的上升，最大生物量對應的物種多樣性略有增加趨勢;在相同海拔和坡向條件下，生物量與物種多樣性之間也呈典型的單峰曲線關系;群落凈生產力與物種多樣性之間總體上也呈單峰曲線關系。 -
Stage structure ecological models i. e is considered. it is a two - species system, where the both species have two stages. immature and mature. and the mature species arc aquated
為了能真實的反映這種生理現象，在建立生態模型時常將種群按其生理特徵分成幼年和成年兩個階段，即年齡階段結構模型。 -
The vegetation was chiefly dominated by coniferous - brodleaved mixed forests, with many evergreen broadleaved species in their young growth stage, it can be suggested that the vegetations in the meizilake area were in a successional stage from coniferous - broadleaved mixed forests to evergreen broadleaved forests. however, the formation of the climax community evergreen broadleaved forests needs a long time
可以看出，梅子湖森林植被群落正處于由針闊葉混交林常綠闊葉林的演替階段，群落中的思茅松林正在向被常綠闊葉林替代的方向發展，但要演替為頂級群落，還需要很長的時間。 -
V ) occupying space and covering ground should be served as the main strategy in early stage of vegetation restoration, which would enable the community coverage to rehabilitate rapidly. in mid - stage, due to the change of light environment and the species substitution, component adjustment should be chose as the main strategy
5 ）植被恢復的策略是早期階段以搶占空間、覆蓋地面的對策為主，群落蓋度恢復很快;中期階段，林內光照環境改變，物種替代，恢復對策以物種組成成分的調整為主;後期則是生物量積累與組成結構調整並重。 -
Exopalarmon carinicanda there are two kinds of spermatogenium in this species, the second kind spermatogenium come from the first one. chromatins condense in each stage at different level. the nucleus changes into two forms : fibrous nuclear and vesicular nuclear
在生精細胞階段核內染色質有不同程度的凝集，在成熟精子中核質分化成泡狀核和絲狀核，整個精子發生過程無核仁發現。 -
Compared with straw - barriers or wooden barriers, clay - barriers may well be in favor of the settlement of plant species at first, in the long run, however, they will hold back the development of leymus secalimus population, so that it will take much longer time for the plant community to restore to its climax stage
與草木沙障相比，粘土沙障設置初期可能有利於植物的定居；但是會對賴草種群的發育產生不良影響。所以，從長遠看來，粘土沙障不利於沙地植物群落的恢復。 -
With the acceleration of extinction of species, biodiversity conservation is extensively concerned. the extinction of species is concerned with the degree of threat by biotic and abiotic factors. so, taking action to preserve plant species is very necessary and paramount before their extinction. one of the most effective biological techniques to conserve the biodiversity is the establishment of genebanks, i. e. ex situ conservation. the elucidation of various factors that regulate seed viability and vigor in storage is essential. an ideal condition to prolong the longevity is mainly depended on seed water content, temperature, humidity and types of containers used during storage. the optimum stage of seed maturity, harvesting techniques and processing, in addition to physiological features such as degree of dormancy, also play key roles in seed storage. certainly, desiccated seeds deteriorate with time even under extremely good genebanking conditions. according to seed storage behavior, it is necessary to consider three principal factors : storage environment, storage duration and plant species which will affect seed survival under good genebanking conditions. the present review is an attempt to discuss the importance of the aforementioned aspects of seeds in detail in order to conserve plant germplasms ( especially wild rare and endangered plants ) for ex situ conservation through seed - gene bank
一個物種的滅絕是與其受生物因子和非生物因子的威脅程度相關的.隨著物種的加速絕滅，保護生物多樣性受到廣泛地關注.保護生物多樣性的最有效的生物技術之一是建立種子基因庫，進行遷地保護.種子庫理想的貯藏條件主要取決于種子含水量、貯藏環境（如溫度和濕度）和貯存種子的容器.進行種子貯藏，了解種子生命力和活力的影響因子的作用機理是十分重要和必要的.除了種子自身的生理特徵外，種子的貯藏壽命與種子成熟度、收獲技術、加工處理方法也是息息相關的.即使在最適的庫存條件下，種子也會隨時間發生劣變.因此，必須根據種子特定的貯藏行為，加以考慮影響種子存活的3個主要方面（貯藏環境、貯藏期和植物種類）而選擇有效的貯藏方案.本文試圖討論種子貯藏生理的幾個重要方面及其需解決的技術問題，以便更好地通過種子基因庫，長期有效地保存植物種質資源 -
Using the residues from wood conversion of acacia and eucalyptus species as material, the molded decorative particleboard products were manufactured by two - stage process and the relationship between process parameters and properties of products were studied in this paper
摘要以相思、桉樹2樹種的木材加工剩餘物為原料，研究兩步法刨花模壓板的製造工藝以及各工藝參數與板材性能的關系。 -
Effects of diffusion on endangered species with stage - structure
擴散對具有階段結構瀕危種群生存的影響 -
The camellia park is a domestic to have most the special features particularly one of a parks, the total collections tea belongs to the plant near 40 kinds of, mountain tea species more than 100ses of yunnan, is at home and abroad to collect the gold at the earliest stage was particularly one of a parks
茶花園是國內最具特色的專類園之一，共收集茶屬植物近40種，雲南山茶品種100多個，是國內外最早收集金花茶的專類園之一。 -
When community developed to climax stage, however, the species diversity would decrease attributing to the disappearance of some pioneer species. in addition, species diversity of the shrub - tree ecotone would increase swingingly, due to the " bundary effects "
但當群落發展到成熟的頂級階段時，多樣性會隨著一些先鋒種的消失而有所下降；另外，林灌交替階段會因「邊緣效應」 ，物種多樣性大幅增加。 -
A mathematic model of two - species competitive with stage structuer is considered. the quality theory of differential equation is applied. the existence and stability of the positive equilibrium are analysed
摘要研究一類具有階段結構的競爭生態模型，運用微分方程定性理論方法，討論了各類平衡態的性質，得到正平衡態存在穩定的條件。 -
Gradually, with the more and more transpiration of the vegetation, and with the reduction of the deep soil moisture, in the end, a kind of balance of soil moisture will appeared and be kept for ever between the precipitation and the transpiration of vegetation, and the manual sand - fixing vegetation will be transformed consequently into its natural climax stage completely, in which the dominant plant is leymus secalimus, and in which the plant species richness is not too low, but the plant species evenness is the lowest
設置機械沙障和生物沙障的初期，植物的物種豐富度、物種均勻度會有一個暫時的提高；但是在人工固沙植被的發育盛期，物種豐富度會降低；隨植物群落蒸騰耗水量的不斷增大，人工植被不斷地衰退，最後發展到賴草土壤頂極群落，此時的物種豐富度並不低，但是物種均勻度很低。 -
Furthermore, it is also found that, compared with the single - stage bp network, the two - stage bp network ( composed of two bp networks ) has high ability to identify gas species and quantify its concentration
另外，利用兩個反向傳播神經網路級聯所形成的兩級網路辨識氣體的組份及其濃度的能力比單級反向傳播神經網路高。 -
A shallow understanding of the formation and development stage of historic and geographical distribution area of peach species and caltivated varieties in ancient china
的歷史地理分佈區域的形成與發展階段的蠡測 -
Mr. anthony fouracre, chief of united nations postal administration will officiate the unveiling ceremony and show the stamp images of the endangered species 2001 on the stage
Anthonyfouracre主持。臺上會展示二一年發行的瀕危動物郵票。
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