種群增長率 的英文怎麼說
中文拼音 [zhǒngqúnzēngzhǎnglǜ]
種群增長率
英文
population growth rate-
The study shows that the early and late seed rains of constructive tree species in evergreen broadleaved forest at chongqing simian mountain had no activity. the bigger the seeds of the species and the earlier or later the seeds of the species matured, the higher the proportion of the seed rain damaged by animals. the quantitative variation of seed rain, active seed rain and seed bank did not take place at the same time. at early time, the number of seed banks of castanopsis fargesii, lithocarpus glabra, quercus myrsinrefolia, castanopsis plasyacantha, cinamomum subavenium. which own more active seed rain increased by geomitric series. the seed banks of castanopsis orthacantha and schima argentea were small, only survived a short time, and did not sprout next year. the quantitative dynamics of seed banks and their increasing or decreasing rates were decided by the proportion damaged by animals, dying speed of seeds and their resistance to pathogens and adverse circumstances, and the state of seed germination
對重慶四面山常綠闊葉林建群種種子雨、種子庫的研究表明，建群種早期和晚期的種子雨無活力;種子偏早或偏晚成熟及大籽粒的樹種，其種子雨被取食的比例大;種子雨、有活力種子雨、種子庫三者的數量變化不一致;有活力種子雨量較大的栲、石櫟、小葉青岡、扁刺栲、香桂等，其種子庫密度在早期以近幾何級數的方式增長，元江栲、銀木荷種子庫小，存在時間短，翌年無一年生萌發苗;種子庫數量動態、消減率動態決定於種子被取食的強度、種子衰老的速度以及種子對病菌、逆境的抗性和種子萌發的整齊性Considering of the above advantages and the problem of water shortage, the area b should be adopted. ( 2 ) filtration irrigation accelerated the growth of the individual maize plants. the area b and c have good basement of photosynthesis and advantage of growth which was good for increasing the seeds > yield and photosynthesis, eventually to reach a high yield and high seed ratio
從葉位、全株葉面積和株高來看，滲灌b 、 c區較滲灌a和漫灌d都有良好的光合作用基礎和生長發育優勢，這種株型有利於籽粒產量的增加，群體光合作用增加，籽粒積累增加，最終的產量都達到10000kg hm ~ 2以上的高產量和81以上的出籽率。And through leslie matrix analysis, we deduced, except of the subpopulation at altitude 490m, the subpopulations of lilium tsingtauense will not die out if not been disturbed badly. we estimated the growth ability and resistance ability of both metapopulation and local population by use the method of quamitative analysis for population structura1 dynamics. the growth ability order is population l > population 2 > population 3 > population 5 > population 6 > metapopulation > population 4
川叩iqu n了e ）復合種群研究摘要從種群年齡結構的穩定、衰退、增長概念出發，以種群結構參數為依據，運用加權法與條件概率乘法法則，定量椎導出衡量種群年齡結構及群落結構的動態指數，該方法克服了過去在植物種群結構動態比較評價中粗放的等級歸類劃分的缺陷，並能解決結構動態定量比較評價問題，因而認為有普遍使用的價值。This product can yield diversified digestive mutastein, vitamin b group and ugf, increase the rate of digestion, keep metabolismnormal, increase weight and resist disease
產生各種消化酵素、維他命b群及未知生長因數（ ugf ） ，提升消化率，維護代謝正常，促進生長，增加抗病力。2, the survival curves of populations of e. chloranthoides in jigong mountain and dongwenquan are diagonal, which indicates that the individuals of each age grade within the two populations possesses the roughly identical death rate and the populations belong to the stable ones, while the survival curve of population in beiwenquan is concave, which shows that the population belongs to the increase one
2 、種群存活率曲線表明，雞公山和東溫泉的縉雲衛矛種群存活率均呈對角線型，說明這兩個種群屬于穩定型，而北溫泉種群的存活率曲線呈凹型，屬于增長型種群。Meanwhile, tiller renewal percent rate ( rt % ) was used as an index to compare the population growth rate which at different size originally
同時提出以分蘗百分比更新率r _來比較基礎構件種群大小不同的增長率。Tiller renewal rate ( rr ) was used to describe the population growth rate on modular level
提出以分蘗更新率r _這一指標來表示無性系構件水平的種群增長率。The temporal and spatial dynamics of a single species metapopulation is modelled by a model. the stability of spatial distribution of the population and relationships between the stable patchy distribution and migration rates and finite rate of growth of subpopulations are also investigated. finally measures to boost the growth of total population are presented through the model and analysis of the model
通過模型模擬了呈一般綴塊分佈的單種種群的時空動態.討論了種群空間分佈的穩定性及穩定綴塊分佈與種群在綴塊間遷移率和子種群增長率之間的關系，並由此提出了促進全局種群增長的措施For ecological system, the state of the system in a moment will be influenced by the state in history as well as by the relation of species at that moment, say, the influence of time delay, and so if we consider it, we will be more precisely in discribe the change and development of the system ; on the other hand, the population of species may be distributed in different patchs because of the influences of envionment or artificial element, this made us had to consider not only the time element but also the spatial element, said the diffusion of species
對于生態系統而言，系統在某時刻的狀態（即種群密度的增長率）不僅受到當時各種群間關系的影響，也應當受到歷史的制約，也即是時滯效應的影響，因而在生態系統中考慮時滯因素，將能更正確的描述系統的變化于發展；另一方面，由於環境或人為因素的影響而使種群的分佈呈現一定的區域性，這就使得我們在對其進行研究時不僅要考慮時間因素，更應該考慮空間因素，即種群間的擴散效應。Labor intensive industries adapting to local situation should be developed and enhanced, such as township enterprises, for providing off - farm opportunities to on - spot labor transferring, along with the rural industrialization and urbanization. at the same time, relevant departments should pay more attention on human resources investment, through enhancing farmers education and their quality for improving the capacities of farmers to choose and find jobs. another important solution is to organize the labor transferring, from transferring without plan and purposes to transferring with confirmed purposes, to increase the transferring efficient and transferring ratio
在以上分析的基礎上，提出本文的建議：應該大力發展和鞏固適應農村特點的勞動密集型二、三產業，尤其是鄉鎮企業，在推進農村工業化和城鎮化的同時，增加大量非農就業機會，促進勞動力的就地轉移；同時，從人力資本投資角度出發，通過多種多樣的形式，加強農民的教育，逐步提高農民的素質，幫助他們掌握一技之長，增強農村勞動力自主擇業和從業的能力；同樣重要的是，加強農村勞動力轉移的組織，從嘗試盲目的轉移到有目的的轉移，提高農村勞動力的轉移效率，從而促進轉移比例的提高；對于不同的社區，推進勞動力轉移的進程中，要注意對一些特殊群體? ?比如女性勞動力的轉移採取一系列的促進工作。In an ageing population the incidence of dementia, cancer, cardiovascular diseases, obesity, osteoporosis and other age - related diseases is increasing and prescription therapy, due to its increasing cost, is coming under pressure
在老齡化人群中癡呆、癌癥、心血管疾病、肥胖癥、骨質疏鬆癥及其他相關的老年病的發病率逐年增長，各種處方治療的花費日漸增多，加重了人們的負擔。Thus with citing these results we separatedly and thoroughly examined all possible dynamical manners of the changing of the ; populations when the species were developing under the function of catching efforts in three different areas departed by the size relation between the intrisic rates of the system and the values of the harvesting efforts. so we could give out - righter qualitative analysis to this system and the scope of catching efforts which make the species sustainable and the asymptotical properties of the corresponding system were also clear
於是，本文在引用已有結論的基礎上，根據給定捕獲努力量與系統內稟增長率之間的大小關系分三部分考慮了在不同的捕獲努力量作用之下，種群發展過程中其個體數量變化可能出現的全部動力學行為，從而對系統給予了較完整全面的定性分析，求出了使生態系統持續發展的捕獲努力量的范圍及相應的系統的漸近性質分享友人