查询词典 populations

The natural distributing populations of the indigenous timber species--Cordia africana that grew in and around the area of Mizan Teferi in Ethiopia were investigated. Bulk seed samples were selected from ten phenotypically superior trees in different natural populations. They were evaluated through the performance of their half-sibs and especially examined for variability in seed morphometrics, seed germination, and seedling growth at nursery stage.

通过对埃塞俄比亚Mizan Teferi及周边地区生长的乡土用材树种--非洲破布木自然种群分布情况调查，筛选了10株生长表现型较好的优良母树，采集了大量的供试种子样品，并对其种子外部特征和在苗圃中的发芽率和种苗生长表现进行了观察和分析对比。

Some of the populations such as Hungs (3rdBC-1rdAD), Turki and Huihu (6rd-9rdAD) and Mongols et al. had different effects on the populations from the Eurasian steppes and populations from Central Plain.

其中匈奴(3rdBC-1rdAD )、突厥和回鹘(6rd-9rdAD)、蒙古(12rd-13 rdAD)等对欧亚草原上的诸多民族以及中原居民都有着不同程度的影响。

Our molecular phylogenetic trees constructed by UPMGA and NJ methods were in general consistent with that based on biochemical,immunogenetic and cellular genetic markers except for differences in some populations.It was inferred from this study that all pig populations examined could be temporary classified into one breed,however,the population genetic character of Taihe Guanchao and Wanan Spotted pig populations should be further evaluated.

各类群的UPMGA和NJ聚类分析结果与采用生化、免疫和细胞遗传标记分析的结论不尽相同，在此基础上，结合现行分类方法，认为各受试猪群可暂时归并为赣中南花猪类型，但对泰和冠朝猪和万安花猪的品种归属性应作进一步分析。

The populations of P. intermedius from the coastal area of western South China were more closely related to the populations of Hainan Island than to the populations of the Xijiang River.

华南沿海地区西部诸独立入海小水系中的中间黄颡鱼群体与海南岛群体之间的相似性大于与西江干流群体的相似性。

Aimed at the study of Lauraceae system classification in domestic and overseas,genetic diversity and genetic variation between Cinnamomun micranthum Hayata natural populations and Ex-situ conservation poputations and relationship among Its Close Relative Species of Cinnamomum camphora Presl,Cinnamomum burmannii(C.G.etTh.Nee) Bl,Phoebe bournei Yang. Litsea subcoriacea Yang et P.H.Huan. Neolitsea aurata Koidz,Lindera communis Hemsl and Persea Americana Mill.were studied by inter-simple sequence repeats molecular marker.The research aimed at genetic variation between Cinnamomun micranthum Hayata populations,so that can offer the molecular theoretic and practical method for conservation and utilization of Cinnamomun micranthum Hayata populations.

针对目前国内外对樟科植物系统分类的研究现状，本研究采用ISSR分子标记技术对樟科沉水樟天然居群和迁地保护居群的遗传多样性进行研究，从分子水平上分析沉水樟种群的生态遗传及其遗传变异规律；同时利用ISSR分子标记技术比较沉水樟及其近缘种香樟、阴香、闽楠、桂北木姜子、新木姜子、香叶树、鳄梨在分子水平上的亲缘关系，揭示这些树种在樟科植物系统进化中的作用与地位，探讨沉水樟及其近缘种的遗传多样性及其分化格局，为樟科植物的系统分类提供分子水平的依据。

The result showed that the polarization of populations and gene fluxes are different in different species. The polarization and gene fluxes of populations of 3 Nitavias are lower except N. sphaerocarpa. The heredity coherence of each population is change from 0.8561 to 0.9694. The polarization in the populations is low, and they have the together ancestor. This is similar to morphology and cytology result, so RAPD is a useful supple mentary method in assessing genetic relationship among Nitraria species.

结果表明：白刺属植物的遗传分化程度和基因流因种而异，除球果白刺以外，其余3种白刺的种群间有很大的基因流，其遗传一致度在0.8561~0.9694之间，而种间遗传分化程度较低，故4种白刺有着相近的祖先，这与形态学和细胞学的分析结果一致，说明RAPD分析方法可从分子生物学角度为白刺属植物的系统学分类提供更为有利和可靠的证据。

Results indicated that population quantities of dominant species were seriously influenced by extreme climatic events:safety of passerine populations were influenced by sandstorms,hailstones and rainstorms;safety of migratory bird populations mainly by sandstorms hailstones and rainstorms,safety of rodent populations by rainstorms and safety of goat popula...

极端天气气候对优势物种数量影响严重。雀形目种群安全主要受到沙尘暴、冰雹和暴雨的影响较大；迁徙鸟类种群安全主要受到沙尘暴、冰雹和暴雨的影响较大；啮齿类种群安全主要受到暴雨的影响较大；岩羊种群安全受到沙尘暴、冰雹、暴雨和降雪的影响。

The sample populations were choused from an educational university in middle Taiwan. Students are all enrolled in the second semester, 2005. The total populations are 4443. Stratified random sample approaching the populations and 896 samples were gathered.

本研究以中部地区某国立大学94学年度第2学期在学的大学生共4443人为研究母群体，采分层随机抽样的方法取得样本数共计896人。

Published in the US journal Science, researchers examined genetic material from 121 African populations, as well as four African-American populations and 60 non-African populations.

在美国科学杂志上发表，研究人员检查了121个非洲人群的遗传物质，以及4个非洲裔人口和60个非非洲人群。

The occurrence of ABBB and BBB,but not ABB and aneuploids maybe demonstrates the distribution range of BB have contracted on the continent and Korean peninsula,AABB populations of plants with subglobose bulb have degenerated on the continent since Tertiary,and the mixed populations of BB and AABB are the relicts of populations on the continent,Korean peninsula and Cheju island.

此地出现ABBB和BBB，而未出现ABB以及非整倍体可能是说明自第四纪以来BB细胞型在大陆和朝鲜半岛的分布区正在收缩；大陆上AABB已经接近消失；而大陆、朝鲜半岛和济州岛的BB和AABB混合居群只是残遗。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。