dynamics of population 中文意思是什麼

dynamics of population 解釋
核反應動力學
  • dynamics : n. pl. 1. 〈用作 sing. 〉 力學；動力學。2. 動力，原動力。3. 動態。4. 【音樂】力度強弱法。
  • of : OF ＝Old French 古法語。
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  1. 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徵，包括南方紅豆杉種群年齡結構、種群空間格局（探討分佈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。
  2. 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徵的研究高度更宜於南方紅豆杉種群的生長。
  3. 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佈，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佈，表明它在自然群落中分佈的概率很小，反映了南方紅豆杉珍稀瀕危的生態生物學特性和特徵。
  4. Amount and spatial dynamics of population of bemisia tabaci hemiptera : aleyrodidae in different host plants

    不同寄主植物煙粉虱種群數量消長及空間動態變化研究
  5. All records both common and uncommon birds supplement the existing wwf ornithological research work and help us better understand population dynamics of bird species and groups inside the nature reserve

    無論是常見或罕見的雀鳥記錄，也對我們世界自然基金會在米埔的鳥類數目的研究工作有很大的幫助。
  6. By quantifying these causes the population dynamics of the insect would be better understood.

    通過對這些原因進行定量，可以更好地了解昆蟲的種群動態。
  7. The population dynamics of rhopalosiphum maidis in maize field

    玉米蚜的發生動態研究
  8. Population dynamics of tryporyza incertulas and its control methods

    三化螟種群動態分析及防治
  9. Studies on field population dynamics of aceria litchii keifer

    荔枝瘤癭蟎田間種群數量動態研究
  10. Prediction of the natural population dynamics of spodoptera litura fabricius

    斜紋夜蛾自然種群數量動態預測研究
  11. The regulation effect of cannibalism in the dynamics of the population model

    自相食對種群的調節效應
  12. Egg in diapause or not : logit ( p ) = - 41. 832 + 1. 422x1 ( sea - water temperature ) + 0. 509x2 ( photoperiod ) ; female laying diapause eggs or not : logit ( p ) = - 89. 001 + 6. 611x ( photoperiod ) the former reflected the effect of environmental conditions on the amount of diapause eggs of this species in xiamen waters, and it is important to study the population dynamics of this species in this area ; while the latter reflected the effect of envi ronmental conditions on inducing the female of this species to lay diapause eggs, and it is important to research the diapause inducers of this species in this area and the physiological mechanism of diapause

    卵是否滯育： logit （ p ） = - 41 . 832 + 1 . 422x _ 1 （海水溫度） + 0 . 509x _ 2 （日照時間） ；雌體是否產滯育卵： logit （ p ） = - 89 . 001 + 6 . 611x （日照時間） 。前者反映的是海區環境對整個廈門海區該種類滯育卵多寡的影響，對于研究本海區該種類的種群動力學有著重要意義；後者反映的是海區環境對該種類雌體產滯育卵的誘導作用，對于研究誘導該種類在本海區滯育的環境因子和生理機制具有重要意義。
  13. Base on the data collected from the field investigations, we analyzed the static life table, age structure, spatial distribution patterns of the populations of e. chloranthoides. we further studied the intraspecific competitions within the species and the interspecific competitions between the species and other concomitant species in the communities. with the helps of the logistic equation, leslie ' s matrix and the average moving law method we simulated and estimated the population dynamics of this endangered plant species

    本研究以縉雲衛矛為研究對象，通過對三個種群的野外調查，研究和分析了縉雲衛矛的種群年齡結構、種群空間分佈格局及種內和種間的競爭關系，並利用logistic方程、 leslie矩陣及移動平均法模擬和預測了三個種群的數量和結構動態，在此基礎上分析了造成縉雲衛矛瀕危的原因，提出了相應的保護措施，旨在為縉雲衛矛的保護提供理論依據。
  14. The results indicated that it was easy, feasible and practical to forecast the dynamics of the adult population with the method

    結果表明：應用此方法監測馬毛松毛蟲種群數量動態的變化，簡單、實用、可行。
  15. On the basis of investigated materials in the plot, the dynamics of edge dispersal of hippophae rhamnoides subsp. sinensis clone population was studied

    以樣地調查資料為基礎，分析了中國沙棘無性系種群的林緣擴散規律及其生態學意義。
  16. Population dynamics of cotton bollworm and the forecasting technique of the principal damaging generation in yanjiang, jiangsu province

    江蘇沿江棉區棉鈴蟲世代增殖規律及主害代預測技術
  17. Dynamics of sophora davidii population in a hilly region closed for thirty years in loess plateau

    黃土高原丘陵溝壑區封禁30年前後狼牙刺種群動態研究
  18. Studies on key influencing factors on the dynamics of natural population of rhopalosiphum padi linnaeus

    影響禾穀縊管蚜自然種群變動的關鍵因素研究
  19. Effects of elevated atmospheric co2 concentrations on population dynamics of thewheat aphid, rhopalosiphum padi

    大氣二氧化碳濃度變化對禾穀縊管蚜種群動態的影響
  20. During 2003 ~ 2004, according to investigation and statistic of the community stabilities of main arthropods in organic tea gardens in guangxi province. the result shown that the principles that the population dynamics of main arthropods in organic tea gardens gradually become stable after organic management of 6 years and need no manual control

    摘要2003 ~ 2004年，對廣西百色地區有機茶園主要益、害節肢動物群落進行調查，並對其穩定性進行了分析，試驗結果表明，隨著有機管理時間的增加，節肢動物群落逐漸趨于穩定，實施有機管理6年以上的茶園，群落的穩定性最高，群落的自我調控能力強，在生長季節不需進行人工防治。
分享友人
分享到 Line

分享到臉書