高種群適度 的英文怎麼說

中文拼音 [gāozhǒngqúnshìdù]
高種群適度 英文
high-population fitness
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 種 : 種名詞（姓氏） a surname
  • 群 : Ⅰ名詞（聚在一起的人或物） crowd; group Ⅱ量詞（用於成群的人或物） group; herd; flock
  • 適 : 形容詞1 （適合） fit; suitable; proper 2 （恰好） right; opportune 3 （舒服） comfortable; well Ⅱ...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 適度 : appropriate; moderate; proper; appropriate measure; moderate degree
  1. 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。
  2. The killing effect on oncomelania hupensis by lixivium of pterocarya stenoptera, nerium indicum, rumex japonicus and their mixture was studied. differences of the snails mortality were studied also. the three kinds of plant material could kill the snail effectively both in spring and in autumn. but the mortality was different when the experiment is done in different seasons or with different lixivium. the effect in spring was better than that in autumn. n. indicum was the most effective among the three kinds. the effect by mixture was better than that by unitary material, and the effect by the mixture of the three kinds was better than that by two kinds. the variance analyses showed that the experiment could be modified, and some ingredients concentration in mixed lixivium could be reduced. the experiment was valuable in enhancing the power of killing the snail and saving plant material

    對楓楊、夾竹桃和土大黃以及它們的組合水浸液的滅螺效果作了比較研究，結果表明: （ 1 ）滅螺效果均隨水浸液濃度的增高而增強; （ 2 ）這3種植物材料及其組合水浸液的滅螺效果都是春季比秋季好; （ 3 ）組合水浸液的滅螺效果比單一植物材料水浸液的滅螺效果好; （ 4 ）方差分析的結果說明植物材料組合水浸液滅螺在保證滅螺效果的前提下，還可以適當降低組合水浸液中的濃度.以上結論對提高植物材料的滅螺效率和節省植物材料的使用量有著重要的意義，同時也為組建植物滅螺群落提供了有益的參考
  3. The winter tiller is more than the spring tiller at quantity hi leymus chinensis, calamagrostis epigeios and c. rigidula population at the beginning growing season. it is an efficient strategy to increasing survival fitness and propagating potential for rhizome grass to grow many active and strong winter tillers

    生長季初期，羊草、拂子茅和硬拂子茅種群返青的分蘗株以冬性植株多於春性植株，冬性植株生活力旺盛、抗性強，形成冬性植株是根莖型禾草種群提高生存適合度，增強營養繁殖力的有效策略。
  4. To optimize the multi - phase homing trajectory, an improved adaptive genetic algorithm ( iaga ) was proposed, which could efficiently improve convergence speed and avoid the occurrence of premature

    在對分段歸航軌跡的優化中，提出了改進自適應遺傳演算法，該演算法通過增加「強化」運算元、改進對種群「早熟」程度評價指標等，有效地提高了收斂速度、避免了「早熟」現象。
  5. It was found that high transplantation efficiency and stable production can be achieved by improving egg fertilization, and egg stocking pattern, by high density of fertilized eggs, and by fertilization and feeding

    結果表明，通過控制受精卵的質量，選擇適宜的投卵方式，保持比較高的受精卵投放密度，並在形成較大種群時進行施肥，增加餌料生物量等方法，可提高移植增殖效果，獲得持續穩定的高產。
  6. Through having done field surveys in the campus of chongqing university, this paper tested classroom indoor and outdoor climate parameters in june, july and september of 2005, it used questionnaire to acquire subjects ’ thermal sense, draft sense and humidity sense in classroom each month, and programmed composition to compute predicted mean vote and compared pmv with the field testing results of mean thermal sensation vote. it is discovered that pmv is overvalued the college student ’ thermal sensation in chongqing. it finds that people in chongqing adapt to the typical summer hot and winter cold sweltering weather

    對重慶地區高校教室的現場調查，測試了重慶大學2005年六月、七月和九月教室室內外熱環境參數，通過採用問卷主要掌握了受測對象教室里的冷熱感、氣流感和潮濕感，通過編製程序求得預測平均熱感覺評價pmv的值，比較pmv和問卷調查得到的平均熱感覺mtsv ，發現pmv預測值高估了重慶地區高校學生的熱感覺，這里的人群對重慶這種夏熱冬冷地區比較典型的悶熱氣候具有一定的熱適應性，對現場問卷調查的結果進行分析，得出了室內空氣溫度、氣流速度、相對濕度與人體主觀感覺之間的回歸曲線，發現重慶地區高校學生熱中性時的空氣溫度為25 . 5 ， fanger根據歐美人群調查得到的公式計算出的預測熱感覺為中性時的空氣溫度為25 . 0 ，兩者相差0 . 5 。
  7. N sources ( including organic and inorganic n tested ) and c sources tested could restrain methane oxidation. cellulose inhibited methane oxidation most weakly while the high concentration of methanol and glucose did dramatically, but the proper concentration of methanol could stimulate soil methane oxidation sharply. in the middle process of methane oxidation, addition of glucose could restrain methane oxidation shortly but the inhibition could be relieved about 5 days later when supplied again with enough oxygen

    土壤微生物是甲烷氧化的主要生物類群，含水量對土壤甲烷氧化活性有明顯影響，過高或過低對甲烷氧化均具有抑制作用；氮源（包括有機和無機氮源）對甲烷氧化均有抑制作用；不同碳源對甲烷氧化的影響各異，纖維素對甲烷氧化抑制作用最小，而高濃度的甲醇、葡萄糖則對甲烷氧化具有強烈抑制作用；而適當濃度的甲醇可極大促進土壤對甲烷的氧化：在甲烷氧化過程中加入葡萄糖能迅速抑制甲烷氧化；在加入葡萄糖的同時保持瓶中充足的氧氣，則這種抑制作用可以在重新培養一定時間后得到解除。
  8. The niche breadths of the populations of s. tsinyunensis are greatest in the communities we studied, which indicates the ecological adaptation of s. tsinyunensis is relatively stronger and the abilities of utilizing resources are greater. with the help of pianka ' s niche overlap we further studied the niche overlap among different species in the sampled communities. the niche overlap among the species with the same or similar environment requirements are greater, especially nich overlap between s. tsinyunensis and those with broad niche breadths in the communities are much greater

    5 ）所調查的各群落中，縉雲黃芩的生態位寬度均較大，說明縉雲黃芩的生態適應幅度較大，對環境資源的利用能力較強；縉雲黃芩與群落中其主要伴生物種間的生態位重疊也較大，表明他們對資源利用的相似程度較高，導致縉雲黃芩與其它物種對某些資源的共同需求，在資源相對不足的情況下，生態位重疊較大的種間將會產生較為激烈的資源利用性競爭。
  9. ( 3 ) the span analysis of the genetic operators. 8 schemes were provided to analyze the relation of the genetic operators such as population size, cross probability, mutation probability. at last, a optimum group of genetic operators was selected

    提出8種方案來分析遺傳操作運算元（種群規模、交叉概率和變異概率）之間的聯系，並根據精度最高原則最終確定一組合適的遺傳操作運算元。
  10. " restoration plan of wetland higher plant community in xuanwu lake " discusses the tenet and principle of the restoration of wetland higher plant community in xuanwu lake, collects the basis of choosing of the wetland higher plant communities from four angles, controlling pollution, landscape succession, beautifying environment, economic utilization. then on the basic of the environment characteristic of the xuanwu lake and the characteristic of the vegetative form and the distribution pattern of wetland plant community, we choose the suitable wetland plant population ; make the plan of the topographical reformation and wetland plant community construction

    「玄武湖濕地高等植物群落恢復規劃方案」討論了玄武湖濕地高等植物群落恢復的原理與原則，從治理污染、景觀演替、觀賞美化和經濟實用的角度研究收集了植物群落的選擇依據，進而根據玄武湖濕地獨特的生態環境特點、濕地植物群落特殊的生活型及分佈方式，確定了適宜的濕地高等植物種群，同時也確定了玄武湖濕地植物群落恢復試驗區湖底地形的改造方案、植物群落的配置和種植方式。
  11. So the improvement, such as the self - adaptive fitness function combined with the penalty function methods, self - adaptive crossover probability and the bp operator enlightened by neutral network, especially the bp network to improve the local optimal capacity were used

    其次結合懲罰函數法對適應度進行了優化。採用自適應交叉概率。受神經網路中bp演算法的啟示，構造bp運算元，提高小種群遺傳演算法的局部搜索尋優能力。
  12. In the course of the evolution of algorithm, the number of niche peaks is decided by seed identification and preservation process, the fitness ascending direction is applied to control search direction, adaptive population distance is used to control search range

    演算法的進化過程中，通過物種的辨識和保存過程確定小生境的峰值，引入個體趨向于高適應度的方向這一控制參數控制搜索的方向，採用自適應調整種群距離的方法控制搜索的范圍，大大提高了搜索效率。
  13. 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。
  14. The results indicated that the greater the niche breadth of a species was, the stronger the ability of adaptation to environment and using resources was. the greater the niche overlap value for some species - pairs, the more similar the environmental requirements and resource use. the species with wide niche breadth may have high overlap value with species with narrow niche breadth, and low on the contrary

    結果表明，種群生態位寬度越大，對環境的適應能力越強，對資源的利用能力也越強；生態位重疊越大，種群間的生態相似性越大，利用資源的相似性程度越高；生態位寬的種群對生態位窄的種群可能有較高的重疊值，反之則較低；生態位寬度最大的種群不一定為群落的建群種。
  15. Besides, proposing an adaptive variation factor to keep the diversity of population, and a novel crossover rule to widen the distribution space of children generations also effectively modified the sga

    提出的相應技術包括：採集種群多樣性指標用以調整變異概率；改進交叉運算元，避免子代收縮，並提高其適應度；新增powell尋優運算元，加速局部搜索。
  16. In this paper, a method of emergence and survival of lacked allele is proposed, that is, selecting the characters missed in current population as lack allele set by comparing the character set with genes of the population, implementing simulated mutation to the individuals selected from the population by mutation rate, choosing the gene just mutated and its locus of the best individual from mutated individuals by fitness, and using it to mutate the genes in the same locus of original individuals

    提出一種缺失基因復現和存活的變異方法，即根據字符集中的字元在種群中的缺失作為預選變異基因集，然後對待變異個體集進行預變異；選擇高適應度個體的對應變異基因和基因位，使其在原待變異個體集中擴散。
  17. In the optimal calculation of pipe networks, using genetic algorithms to optimize, by natural number coding. then this thesis simply discuss the selection of initial genetic colony and the reasonable value of penalty function multiplier. it improve the constringency speed of genetic algorithms

    在管網優化計算部分，採用遺傳演算法，用自然數編碼的方式進行遺傳優化，對初始種群的優選，適合度函數中懲罰因子的取值，作了初步的探討，提高了遺傳優化的收斂速度。
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