population size index 中文意思是什麼

population size index 解釋
種群大小指數
  • 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...
  • index : n （pl es dices ）1 索引。2 指標，標準，標志。3 示[食]指 （＝index finger）。4 指數。5 【印刷】指...
  1. On the basis of foreign documents, the dissertation firstly describes the morphology, taxonomy, and biological characters of cochineal insects. then, by using artificial climate cases in the lab, according to orthogonal design, 8 lands of combinations of temperature, humidity and light is set, while the temperature has four levels : 15, 20, 25 and 30, and the relative humidity has two levels : 60 % and 80 %, while the light also has two levels : 980 lux and 60 lux. through observations and analysis of hatching percentage, survival percentage of the first instar and during from the second instar to the adult, the population tendency index, generation life cycle, size and eggs of female adult, the development of the cochineal under different conditions is studied

    在收集、整理國外對胭脂蟲的研究資料基礎上，首先從胭脂蟲的形態學、分類學、生物學特性入手，進而在實驗室內利用人工氣候箱，應用正交設計方法，設計了4種溫度、 2種濕度、 2種光照梯度的不同組合，通過測定胭脂蟲的孵化率、 1齡若蟲的存活率、 2齡若蟲至成蟲期存活率、種群趨勢指數、世代歷期、雌成蟲的大小、懷卵量等生物學指標，深入研究胭脂蟲在這些組合下的生長發育狀況，應用數理統計方法，分析出溫度、濕度和光照對各項生物學指標的影響，找出胭脂蟲適宜的室內培育條件，並為野外胭脂蟲的培育提供一定的理論依據。
  2. Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features

    前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切
  3. 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。
  4. 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。
  5. Population index ? covers all fields of interest to demographers, including fertility, mortality, population size and growth, migration, muptiality and the family, and research methodology

    人口索引向人口學家，包含死亡人數，人口數量和成長，遷移，結婚率和家庭的研究方法覆蓋所有的使人感興趣的領域。
  6. 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。
  7. Study limitations were exclusion of bone mineral density from the index, small sample size, and lack of alidation of the scoring system in another population

    研究的不足之處是參數中排除了骨密度參數，樣本數量小並且沒有在其它人群中確認這一評分系統。
分享友人
分享到 Line

分享到臉書