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Broomcorn millet playsan important part in grain production. Because of its high yield it caneven help to tide over faminein years of crop failure.

对糜子比较耐旱的特性进行了生物学方面分析,物候学方面的分析及地理分布方面的分析,说明糜子在宁南山区仍有较大的增产潜力。

You can't just dismiss this out of hand,' says Joseph Kirschvink, a professor of geobiology at the California Institute of Technology.'It's not unreasonable for these animals to have evolved seismic-escape responses in this fashion.

加州理工学院(California Institute of Technology)地理生物学教授约瑟夫·克什文克说,你不能完全否定这种说法,这些动物经过进化,作出这样的地震逃生反应并非没有可能。

This informative page offers numerous educational resources for example the Jurassic Reef Park (virtual trip to the reefs of the jurassic period), information on non-reefal environments, climate, sealevel change (causes, action and reaction, conseqences), living fossils (e.g. Archaeopteryx), methods in geobiology and palaeontology and Regional Geology and Palaeontology.

该网站提供了大量的教育资源,例如:侏罗纪礁石公园,非礁石环境,气候海平变化(原因、行为、反应和结果),活体化石,地理生物学和古生物学方法以及区域地质学、古生物学等信息。

From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.

本文从地植物学的角度,运用植物生长相关因子法,对我国喜树资源的生态适宜区进行了划分,理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域;从群落生态学的角度,对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究;从种群生态学的角度,运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段,对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析;从个体生态学的角度,对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究;从保护生物学的角度,对野生喜树的濒危的内部因素和外部因素进行了探讨,并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测;从资源生态学的角度,对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究,并对喜树碱的提取工艺进行了探讨。

Center for Ecology and Conservation Biology is primarily dedicated to education and research in ecology and conservation biology including paleoceanography, ecological economics, sensory biology, behavioral ecology of birds, behavioral ecology and insect sociobiology, evolutionary biology, ichthyology, forest ecology and biogeochemistry, mammalian population genetics, etc.

生态学与保护生物学中心致力于生态学与保护生物学的教学与研究,其研究领域包括古海洋学,生态经济学,感官生物学,鸟类行为生态学,行为生态学和昆虫社会生物学,进化生物学,鱼类学,森林生态学和生物地理化学,哺乳动物遗传学等。

Biodiversity is one of the front areas of current biological research. The mechanisms of the formation, spatial distribution pattern, conservation and utilization of biodiversity have been an important area of biological and environmental research. In this study, through analyses of data about plant diversity, animal diversity, geographic factors, climatic factors, and energy factors by use of GIS software, statistic software and ecology software, the mainland of China was divided into 241 small districts of 2° by 2°. The environmental factors in each district were analyzed and isopleth maps of environmental elements were depicted.

生物多样性是当今生物学研究的热点问题之一,生物多样性的形成机制和分布格局以及保护利用问题一直是生物学和环境科学所研究的重要内容,本文由此出发,以中国陆地为研究区域,通过植物多样性数据、动物多样性数据、地理因子、气候因子、能量因子等资料,利用MAPGIS、MAPINFO等GIS软件,SPSS、DPS等统计学软件以及CANOCO等生态学软件,将中国陆地划分为241个小区,分析了各区内的环境特点,统计了各区内生物多样性的数量,并绘出环境因子等值线图,中国陆地种子植物科、属、种,裸子植物种、蕨类植物种、兽类、鸟类、爬行类、两栖类种数的等值线分布图,对中国陆地植物、动物多样性现状、分布格局及与环境因子的关系进行了研究。

We organized and identified the specimens which collected in the insects specimens laboratory of life science and technology department of Xinjiang university, from almost everywhere of Xinjiang with combination of the conventional methods and the electroscopic scanning technique.

本文采用常规鉴定方法与雄性外生殖器解剖相结合,辅以扫描电镜观察,对收藏于新疆大学生命科学与技术学院昆虫室20年来积累的标本及三年在校期间系统地采集于全疆各地的拟步甲类标本进行了整理与鉴定,结合野外考察及重要类群的生物学研究,研究其区系成份,并对其区系特征及地理分布状况进行了系统的分析,主要研究成果如下:1)初步查明新疆拟步甲科昆虫共计266种,分隶于23族72属,其中35种为中国新记录种,3种为拟步甲类新种,作新种记述,并附图片;在研究过程中初步探讨了拟步甲的中文命名问题; 2)新疆拟步甲种类繁多,其区系成分分析显示,除12种为广布种以外,共有6种区系成分,其中中亚细亚种为最多,有87种,占已种的32.7﹪;其次依次为中央亚细亚种和特有种,分别为81种和65种,各占已知种类的30.5﹪和24.4﹪;泛古北种12种,占4.5﹪;欧洲西伯利亚种7种,占2.6﹪;欧洲中亚种最少,仅有2种,占0.75﹪,并根据新疆拟步甲科昆虫区系成分分析了其起源问题; 3)新疆拟步甲科昆虫的地理分布表明,分布于准噶尔盆地的种类最为丰富,计161种,占新疆已知种的60.5﹪;其次是塔里木盆地92种,占已知种的34.6﹪;东疆诸盆地63种,占23.7﹪;伊犁谷地56种,占21.1﹪;在三大山系中,天山山系的拟步甲种类最多,为54种,占20.3﹪;阿尔泰山山系28种,占10.5﹪;昆仑山山系13种,占4.9﹪。

The problems have been attributed to difficulties in the interpretation of the significance of morphological characteristics used to classify palaemonid shrimp and have hindered the development of stable classification systems.

本研究以中国境内分布的沼虾属种类为主要研究对象,利用DNA测序、PCR-RFLP技术和ISSR技术等分子生物学实验手段,运用支序系统学与分子进化生物学理论及分析方法,以地理群体为基本研究单元,展开从地理种群-物种-属的逐级水平的系统学研究。

Center for Ecology and Conservation Biology is primarily dedicated to education and research in ecology and conservation biology including paleoceanography, ecological economics, sensory biology, behavioral ecology of birds, behavioral ecology and insect sociobiology, evolutionary biology, ichthyology, forest ecology and biogeochemistry, mammalian population genetics, etc.

生态学与保护生物学中心致力于生态学与保护生物学的教学与研究,其研究领域包括古海洋学,生态经济学,感官生物学,鸟?????行为生态学,行为生态学和昆虫社会生物学,进化生物学,鱼类学,森林生态学和生物地理化学,哺乳动物遗传学等。

The journal publishes original and significant contributions on the systematics and phylogeny of invertebrates worldwide, including papers on defined taxonomic groups and on the phylogeny, biogeography and/or other aspects of biodiversity and general biology of the group; contributions on the systematics of selected species; short, general papers, pertinent to invertebrate systematic biology on methodology, theoretical systematics, cladistics, phylogeny, molecular biology and biogeography; reviews of general invertebrate systematics, containing innovative data or overviews of current theories.

杂志刊载世界范围内的无脊椎动物的系统分类学和系统发育的原始和重要投稿,包括关于精确分类种群和种群生物多样性与普通生物学的系统发育,生物地理和/或其它方面的论文;关于选择物种系统分类学的投稿;有关无脊椎动物系统生物学的方法学,理论系统分类学,遗传分类学,系统发育,分子生物学和生物地理的短概括性论文;无脊椎动物普通系统分类学的评论,包括新数据或当前理论的观点。

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推荐网络例句

With the development of highway construction, the speed of cars has been gradually increased.

随着公路的发展,汽车的车速也在不断提高。

So we basically had to develop a bond with the animal in terms of socializing with it.

所以我们就主要想通过跟它沟通的方式来建立一种良好的关系。

"Comrade, I will be late for school. Please take me to my school, will you?"

"同志,我上学要迟到了,请你把我送到学校好吗?"