population age distribution 中文意思是什麼

population age distribution 解釋
人口年齡分佈
  • 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。
  • age : n 1 年齡。2 成年〈滿廿一歲〉。3 老年，晚年。4 壽命；終生，一生。5 時代，時期，年代。6 〈口語〉很...
  • distribution : n 1 分配，分發，配給；分配裝置[系統]；配給品；配給量；【經濟學】配給方法，配給過程；分紅；【法律...
  1. Ten - year projections of population distribution by tertiary planning unit ( tpu ) are produced regularly under the auspice of the inter - departmental working group on population distribution projections ( wgpd ) for general planning uses at local levels. projections of the age structure of the population by district council district and new town are also produced

    跨部門的人口分布推算小組除了定期按小規劃統計區編制未來十年人口分布推算數字，作為地區層面的一般規劃用途外，亦會按區議會分區和新市鎮編制人口年齡結構的推算數字。
  2. 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。
  3. 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
  4. 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。
  5. Age structure and distribution pattern of pinus massoniana population in wuhan ma an mountain forest park

    武漢市馬鞍山森林公園馬尾松年齡種群結構與分佈格局
  6. The death rate of individuals in dongwenquan population shows another pattern with slowly raise along with the age. 3 with the use of the dispersal index ( di ) clump intensity ( ci ' s ) mean crowding ( m * ) patchiness index ( pai ). green ' s index ( gi ) and intensity index as parameters, we further studied the spatial distribution patterns of the three populations

    ， chtoran ， hoidesyaog ）種群結構與動態研究3 、用leshe矩陣模型定量預測三個種群未來20a的數量與年齡結構變化的結果顯示，北溫泉緒雲衛矛種群數量在未來4a內會有一定程度的減少，以後的種群數量逐漸增加，呈不斷擴大的趨勢，而這其中幼齡個體所佔的比例越來越大，老齡個體的比例越來越小。
  7. By comparing the calculation methods of chird number parity progression ratios parity progression ratios and based on the data of 1 national population sampling survey of 2000, this paper calculate the child number parity progressive ratios respectively by the variables of age, urban - rural and region to reveal the levels and distribution of the lifetime fertility of chinese women

    摘要通過孩次遞進比計算方法的比較選擇，本文運用第五次全國人口普查1抽樣數據分別計算中國2000年育齡婦女的各年齡別孩次遞進比、城鄉孩次遞進比、區域孩次遞進比，揭示中國育齡婦女生育水平的分佈狀況。
  8. The essential research of employment is the supply and demand of labor force. imitating the population research, we introduce the transfer probability and set up an evolutive model of labor distribution based on the age and occupation classification of labor force, then we use the model to study the practical transfer rule for labor force in different vocations

    就業問題的本質是勞動力供需的研究，本文仿照人口研究，引進轉移概率，建立了一個基於勞動力年齡分類和行業分類的勞動力就業分佈的動態演化模型，具體研究勞動力在行業間的轉移規律，對我國勞動力市場展開定量分析研究。
  9. Figures for the weighted sample were obtained from weighting the figures of the raw sample by the gender - age distribution of the hong kong population, according to the 2001 population census results published by the hksar government

    被訪者基本個人資料加權樣本的數據，是根據政府公布的2001年人口普查結果，把原始數據按照年性別分佈情況加權調整后的結果。
  10. It is therefore essential to know the age distribution in the population.

    所以，了解在該種群中的年齡組配狀況是很重要的。
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