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taxus n.(pl. taxus) 【植物;植物學】紫杉屬 (T...

taxying

Taxus chinensis vsr . mairei population is very oblivious from seeding stage to mature tree stage . the patterns were consistant with the ecological and biological characteristics of form . taxus chinensis var . mairei which were valuable and rare and in severe danger . in this paper , logistic model and liu - logistic model were proposed to approach the growth dynamics of tree basal area of form . taxus chinensis var . mairei population 南方紅豆杉幼苗表現為較強的聚集分布,除與種子的散布有關外,生境條件的差異是重要原因之? ,其它發育階段表現為明顯的隨機分布,表明它在自然群落中分布的概率很小,反映了南方紅豆杉珍稀瀕危的生態生物學特性和特征。

Taxus chinensis var . mairei population in form . taxus chinensis var . mairei community using six aggregate indices ( c , i , i m , pai , ca , ) , then analyze the causes of evolved pattern . the results indicated that the distribution pattern of seedling were all clumped in every plot , however , the distribution patterns of sapling , media tree and mature tree were mostly random . the trend of diffuse of form )回歸分析法研究了南方紅豆杉林中南方紅豆杉幼苗、幼樹、中齡樹和成樹的分布格局及動態,并分析格局形成原因,結果表明,各樣地南方紅豆杉種群幼苗均成聚集分布,幼樹的分布格局偏向于隨機分布,而中齡樹與成樹則為隨機分布,從幼苗到成樹,隨機擴散的趨勢十分明顯。

The spectral analysis of the population showed that there was a marked regularity of periodic in the process of natural regeneration of taxus chinensis var . mairei , and it availed to the stabilazation of form . taxus chinensis var . mairei population . this paper presents the spatial distribution pattern and dynamics of form 南方紅豆杉種群固有的生態生理特征決定了其生命表和存活曲線的類型,從種群發展的角度來看,早期較高的死亡率嚴重限制了南方紅豆杉種群的擴展,是南方紅豆杉瀕危的重要原因。

In this paper , the morphological characteristics of nine endophytes isolated from the barks , stalks , branches of taxus cuspidate sieb et zucc . grown in changbai nature reserve in northeast china ' s jilin province are studied through observation , description , shooting of culture - characteristics and microstructure 本論文通過培養性狀觀察、制片檢查,描繪及攝影等方法研究了分離自長白山自然保護區東北紅豆杉( taxuscuspidatesiebetzucc . )樹皮、樹莖和樹枝的9株內生真菌的形態學性狀。

The growth dynamics of tree basal area of form . taxus chinensis var . mairei population in different altitude were discussed using the liu - logistic model , and the results showed that the altutide of 790 meters is more suitable to the survive of form . toms chinensis var . mairei population than 990 meters . plot sampling was selected and dynamic analysis was used to study the height structure of taxus chinensis var . mairei population , and the quadrate picture of height structure and the curve of survival rate were drew 運用改進模型對南方紅豆杉種群在不同海拔梯度的種群優勢度增長進行了探討,表明海拔790m處的南方紅豆杉具有較大的環境容納量,但增長速度不快,海拔990m處的南方紅豆杉種群環境容納量不高,但具有較大的增長速度,這可能與群落的發育階段不同有關,兩地海拔均為南方紅豆杉適宜的生長海拔高度,相比而言,海拔790m的珍稀瀕危植物南方紅豆杉種群數量特征的研究高度更宜于南方紅豆杉種群的生長。

The seeding accounted for 91 . 48 % of total number , and the mature tree of h : 5 ~ 7m class for 227 % whose density was just next to the seeding class . the results of intraspecific and interspecific competion formed the different individual height of taxus chinensis var . mairei population . the fractal dimension of taxus chinensis vsr . mairei were calculated on three indices : crown breath , base area , volume 分析南方紅豆杉種群高度結構變化的原因認為,種間和種內對資源的競爭是引起其種群結梅粼七的主要原因,隨著高度增長,物種間不唯琳內對生存空間的競爭加劇,形成南方紅豆杉種群世代不同大, j 、個體的高度結構。

Form . taxus chinensis var . mairei is protecting plant in the first class , which is a precious and endangering plant in china in this paper , the quantitative characterics of form . taxus chinensis vsr . mairei population including age structure , spatial distribution pattern , growth dynamics of tree basal area , niche characterics , fractal dimension and competition between specises were studied using methods of mathematics ecology from the angle of population ecology of form . taxus chinensis var . mairei , then the prent state and the endangering causes were analysed . this research offers gist to protecting and enlarging the crude resourse of form . taxus chinensis vsr . mairei population , afforesting plantation and sustainable utilize for us 本文從南方紅豆杉種群生態學的角度、主要應用數學生態學的方法探討南方紅豆杉種群的數量特征,包括南方紅豆杉種群年齡結構、種群空間格局(探討分布格局動態規律與生境相互關系) 、不同立地條件下種群優勢度增長趨勢、生態位寬度、生態位相似比例、生態位重疊、空間占據能力及種間競爭等,分析其目前現狀及瀕危原因,期望為南方紅豆杉野生資源的保護和擴大、營造人工林及可持續利用提供理論基礎,也為瀕危植物種群生態學的研究提供參考。

The anatomical structure of the aerial adventitious roots of taxus chinensis var . mairei . was investigated in this paper 摘要對自然狀態下南方紅豆杉莖干向下萌生的氣生不定根進行解剖學觀察。

Studies on the cutting propagation of taxus chinensis var . mairei . . effects of foliage fertilizer and transparency on growth of the cut seedlings 葉面肥與透光度對扦插苗生長的影響

Studies on the cutting propagation of taxus chinensis var . mairei . . effects of rooting powder on the rooting of the cutting 促根劑對扦插穗條生根的影響

Callus induction and darkening inhibition in tissue culture of taxus chinensis var . mairei and taxus media 兩種紅豆杉植物的愈傷組織培養及褐化抑制

Cloning and characterization of the geranylgeranyl diphosphate synthase gene in taxus walliciana 紅豆杉香葉基香葉基焦磷酸合成酶基因克隆分析

Current status of studies on cutting propagation and culture in vitro of taxus chinensis var . mairei 南方紅豆杉扦插繁殖和離體培養研究現狀

Determination of taxol and cephalomanine content in needles and twigs of taxus yunnanensis 云南紅豆杉枝葉中紫杉醇和三尖杉寧堿含量的測定

Semilethal low temperature and low temperature adaptability of tow taxus media species 曼地亞紅豆杉的半致死溫度與對低溫的適應性

Initiation and growth of taxus chinensis embryo - derived cell line and production of taxol 紅豆杉胚源細胞株的培養和紫杉醇的生產

Study on the techniques of constructing biological fuelbreak of taxus wallichiana var . mairei 南方紅豆杉防火林帶營造技術的研究

Investigations on the community with taxus mairei of nature reserve of macaque in jiyuan 濟源獼猴自然保護區南方紅豆杉群落調查

Analysis on the amounts of taxol in different location of taxus chinensis var . mairei 南方紅豆杉不同部位紫杉醇含量的分析