population size 中文意思是什麼

population size 解釋
群體大小,群體含量
  • 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。
  • size : n 1 大小，尺寸規模身材。2 （鞋帽等的）尺碼，號；（紙張的）開。3 巨大，大量；相當大的分量。4 〈口...
  1. The mean effective population size could be estimated as a harmonic means of the ne.

    估計出平均有效種群大小，作為所有世代Ne的調和平均值。
  2. The mean effective population size could be estimated as a harmonic means of the ne

    估計出平均有效種群大小，作為所有世代ne的調和平均值。
  3. Dusky thrush ( turdus naumanni ), common magpie ( pica pica ), bohemian waxwing ( bombycilla garrulus ), grey - faced woodpecker ( picus canus ) mainly consists of single species, and the average population size is 6. 26 individuals ( 1989 - 1990 ) and 7. 44 individuals ( 2001 - 2002 ), the mixed species population mainly consists of great tit ( parus major ), marsh tit ( parus palustris ), eurasian nuthatdch ( sitta europaed ), the average species number is about 3, average number is 7. 4 individuals

    冬季鳥類的集群明顯，單種群主要為長尾山雀、斑鴉、喜鵲、太平鳥和黑枕綠啄木鳥群，每群平均個體數為6 26隻門? 1990年）和7 44隻（ 2001 2002年） ，混合群主要由大山雀、沼澤山雀和普通幅構成，每群平均種數在3種左右，平均個體數在7
  4. The fitness formula is the most - used function in the genetic algorithm it will be invoked population size x generations times, so you should make it as simple and as fast as possible

    適應性公式是遺傳演算法中最常用的函數， （它將要被調用的次數是（人群大小） x （代的數目）次） ，所以您應當盡可能的使它簡單、快速。
  5. Soil microbial biomass and viable population size ( plant counts ) were negatively affected by the elevated metal levels, but the size of soil basal respiration rate and microbial metabolic quotients were positively influenced by the increasing heavy metal pollution levels. microbial community structure also changed with increasing contamination, as indicated by biolog data and principal component analysis of biolog community metabolic profiles. soil microbial metabolic profiles ( awcd ) values, community richness and diversity index in mine - soils decreased remarkably as compared

    相關分析結果表明，土壤重金屬含量和土壤基礎呼吸、微生物量cfn 、代謝剖面（ awcd ） 、微生物商（ cmic / corg ） 、代謝商（ qc02 ）與人工栽培的香根草植物地上部分呈顯著或極顯著正相關（卜0 . 6653飛0 . 8945 」 ） ;微生物量c 、微生物量n 、生化作用強度、酶活性、群落shannon指數（ h ）和微生物群落豐富度（ s ）與人工栽培的香根草植物地上部分生物量呈顯著或極顯著地負相關（ r =一。
  6. And the populations of p. cicutarrifolia exhibit clumped distribution in zhejiang, hubei, jiangxi, anhui etc. furthermore, the population size is small, and its number is scare, and every population is n ' t dominant in its community, which resulted in their endangered state, for which habitat fragment and artificial damage are mainly responsible

    安徽羽葉報春呈斑塊狀分佈於安徽黃山、石臺、休寧、寧國、涇縣、歙縣、黟縣等南部山區，毛茛葉報春呈島嶼狀分佈於浙江、安徽、湖北、江西等省。兩物種種群少且種群小，在群落中都不佔優勢。
  7. Finally, simulation experiments, the different parameters set out under the track, population size of the different fitness value of statistical analysis, the results showed that use of genetic algorithms in robot path planning is effective and feasible

    最後通過模擬實驗，對不同參數設置下規劃出的路徑進行比較，不同種群大小的適應度值進行統計分析，結果表明，遺傳演算法應用在機器人路徑規劃中是有效的，可行的。
  8. In china, equality among ethnic groups means that, regardless of their population size, their level of economic and social development, the difference of their folkways, customs and religious beliefs, every ethnic group is a part of the chinese nation, having equal status, enjoying the same rights and performing the same duties in every aspect of political and social life according to law, and ethnic oppression or discrimination of any form is firmly opposed

    在中國，民族平等是指：各民族不論人口多少，經濟社會發展程度高低，風俗習慣和宗教信仰異同，都是中華民族的一部分，具有同等的地位，在國家和社會生活的一切方面，依法享有相同的權利，履行相同的義務，反對一切形式的民族壓迫和民族歧視。
  9. To evaluate the effects of drift in the classical sense, the population size should be known.

    要用正統含義估計播遷的效益，就應知道種群的大小。
  10. The crash reduces the population size toward the original level.

    隨著暴跌，導致種群數量回到它的初始水平。
  11. Patrolling, surveying, monitoring and recording data on wildlife species, population size and habitat change

    巡邏、調查、監測及記錄野生動物種類、族群數量、棲息環境變化。
  12. In 1980s diet bamboo of the giant panda was blooming. all these are responsible for the decrease of the population size of the giant panda. to prevent the further degradation of the panda habitats and protect this endangered species, we should assess impacts of human duisturbance on the giant panda and its habitats

    為確切掌握大熊貓的數量、分佈、棲息地環境等情況，制定切實可行的保護管理計劃，我們以王朗自然保護區的大熊貓調查資料對其棲息地情況進行了詳細研究，王朗自然保護區是岷山的腹心地帶，保護好這個大熊貓種群是保護大熊貓物種的重要組成部分。
  13. Both have been on the verge of extinction due to poaching and habitat fragmentation. in order to enlarge the population size and recover the wild populations, ex situ conservation strategy has been advocated by the governing agents in china through natural or artificial breeding in captivity

    為了拯救此二物種，我國政府主管部門相繼制定了人工易地保護的物種保護策略，以期通過人工圈養條件下的自然繁殖和人工繁殖，達到增加種群的數量，促進野生種群恢復之目的。
  14. Longgang nature reserve plays an important role in preserving two langur species of both white - headed langur and francois langur. interview and field survey methods were used to survey the distribution and population size of these two langurs in this natural reserve from december 2001 to january 2002. the result indicated that the reserve has 8 groups of white - headed langur with 68 individuals in longrui and 10 groups of francois langur with 75 individuals in longgang. the distribution area and population size of both of the two langurs in this reserve have greatly declined in the past decades. they are seriously threatened and have high risk of disappearance from this reserve if no effective measures are to be taken at once

    為了確定弄崗自然保護區內白頭葉猴的種群數量，彌補黑葉猴種群數量的空白，掌握此保護區葉猴的生存現狀，採用訪問法和實地數量統計法相結合的方法對弄崗自然保護區的弄崗、隴瑞和弄呼3個部分進行深入的調查研究.調查結果表明，在隴瑞片范圍內，共有8群白頭葉猴，種群大小在68隻左右，和20世紀80年代末的244隻相比，數量下降相當驚人;在弄崗片內，共記錄到黑葉猴群10群，最大的種群為11隻個體，最小的種群是4隻個體，共計約有75隻黑葉猴（絕對數量統計） ;弄呼的黑葉猴種群已經于上個世紀的晚期消失.造成目前狀況的因素主要是過度狩獵和其他形式的過度干擾.弄崗自然保護區的葉猴種群數量已經接近可持續繁殖種群的最低水平，如不採取有效的保護措施，這個種群將很可能在短期內消失
  15. Quantitative study of optimum population size and shaanxi province population capacity

    陜西省人口承載力與適度人口定量研究
  16. Multiple comparison method and similarity coefficient method were developed to estimate population size of the giant panda. the chi - square testing was used to determine the relationship between the occurrence of pandas and the type and intensity of human disturbance. habitat selection of the giant panda and impacts of human disturbance, such as logging, livestock grazing, herb collecting, poaching, road building, were quantitatively analysed by habitat selection index of manly

    同時還利用manly （ 1993 ）的選擇指數（ selectionindex ） ，定量分析王朗大熊貓對生物和非生物生境因子的選擇，特別是分析如採伐、放牧、采藥、偷獵、修路等人類干擾對大熊貓及其生境的影響，從而為保護區大熊貓的管理提供依據，將造成大熊貓瀕危的人類干擾降至最低。
  17. Control the population size growth

    控制人口數量增長
  18. Control the population size

    控制人口數量
  19. Promotion of family planning to control the population size and improve the health of the people

    實行計劃生育的控制人口數量的提高人口素質
  20. The effect of patchy - distribution of mangrove on birds was complexity. its increased habitat heterogeneity can attract some different type birds. however, its result of fragmetating mangrove habitat decreased the species diversity and population size of birds

    紅樹林斑塊分佈對鳥類影響比較復雜，一方面斑塊生境異質性高，可以吸引不同類型鳥類，另一方面又導致了紅樹林生境的破碎化，減少了鳥類的活動空間，從而導致鳥類種類和數量的減少。
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