优势种
- 与 优势种 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
The dominant species in Azonopus cornpressus community were Chrysopogon acicvlatvs , Cynodon dactylon , Erernochloa ophiuroides , Paspalurn paspaloides ,Paspalurn conjugaturn and Elephantopus tornentosus.
地毯草群落结构中主要的优势植物种有竹节草、狗牙根、假俭草、双穗雀稗、两耳草以及百花地胆头等,其中以地毯草+竹节草+双穗雀稗和地毯草+竹节草+狗牙根两种群落组成类型较多。
-
One hundred and fifteen species were identified, among which coastal eurythermic species were predominant, showing obvious characteristics of subtropical population fauna. The results showed that the average abundance of phytoplankton in Shacheng Harbour was 3113.24 ind·L-1. The abundance was higher in the inner bay than that in the outer bay in horizontal distribution. The surface abundance was a little higher, but there was no significant gradient in different water layers in vertical distribution. Shannon-Wiener diversity index, Margalef richness index, Pielou evenness index and Simpson dominance index were 2.390, 2.650, 0.726 and 0.306, respectively.
结果表明,该次调查共出现浮游植物115种,种类以沿岸广温广盐性种为主,并呈现较为明显的亚热带海湾种群区系特征,浮游植物的平均丰度为3 113.24 ind·L-1;水平分布上,呈内湾高于外湾的格局;垂直分布上,表层丰度略高,不同水层的分布梯度不明显;Shannon-Wiener多样性指数、Margalef丰富度指数、Pielou均匀度指数和Simpson优势度指数分别为2.390、2.650、0.726、0.306。
-
Outsourcing has led the trend of corporations'development in the future, and the outsourcing on non-core business is to focus the company's predominance on its promising core business in order to reduce costs, achieve flexibleness.
现在外包已经成为了一种潮流,已经成为未来企业发展的方向,非核心业务外包是企业将可用资源集中到企业最具有优势、最有发展前途的核心业务上,而把其他的非核心的业务交由第三方专业企业运作,以实现降低成本、精益求精和灵活多变为目标的一种经营方式和有效手段。
-
In the water samples from Gudao, and No. 1 and 2 wastewater stations of the Shengli Oil Field, the ratios of amount of iron bacterial cells to total microbial cells, detected by the combination of the 4 probes and DAPI staining, were 11.0%, 12.8% and 9.0%, respectively. In the iron bacterial community, Leptothrix, Sphaerotilus and L. ferriphilum were dominant in the 3 stations, and Leptothrix and Sphaerotilus, and L. ferriphilum cells to accounted for 2.94%±0.52%~3.39%±0.52% and 2.24%±0.16%~2.63%±0.49% of the total microbial cells, respectively, while L.
结果表明,利用基因探针能快速对胜利油田外排水中的铁细菌进行检测:在孤岛采油厂、胜利采油厂1号和2号综合处理站的外排水中,利用4种探针的组合探针检测到的铁细菌细胞数量分别占样品中微生物总细胞数量的11.0%、 12.8%和9.0%,其中Leptothrix和Sphaerotilus,以及Leptospirillum ferriphilum为胜利油田外排水中的3种优势铁细菌,分别占水样中总微生物细胞数的2.94%±0.52%~3.39%±0.52%和2.24%±0.16%~2.63%±0.49%;而Leptospirillum ferrooxidans和Acidithiobacillus spp。
-
Through the comparative analysis of the arthropod community between intercropping system and the three control systems~the weeding jujube yard system, not weeding jujube yard system and the system of farmland, it is showed that the intercropping system have a more richer neutral arthropod groups. Compared to Weeding jujube yard system and system of farmland the intercropping system have more advantages in natural enemies groups and more disadvantaged phytophagy groups. And the intercropping system can rebuild the arthropod community more faster than the other systems after the system was seriously disturbed, so it is than compared to other three systems the intercropping system have more proper structure and more stronger regulation ability and also more stronger ability to control pest.
对枣粮间作系统和三种对照系统,即除草枣园系统、未除草枣园系统和农田系统的节肢动物群落进行对比分析发现枣粮间作系统具有更为丰富的中性节肢动物类群,比起除草枣园系统和农田系统有更优势的天敌类群和更劣势的植食性类群,且在遭受生境的巨大变化后新生境重新形成时枣粮间作系统的各亚系统能更迅速的形成节肢动物群落和各种功能类群,说明枣粮间作系统比三种对照系统的节肢动物群落有着更合理的结构、更强的调控能力和更强的控害能力。
-
The photosynthesis is determined by photosynthesis meterThe results showed that the net photosynthesis rate of Carex lasiocarpa(47.41 μ mol/m/s)is faster than those of other plants in Carex lasiocarpa wetland, Based on the overall sunlight radiation and the efficient photosynthesis radiation, energy utilization rate in radicula was the highest(1.3945% and 3.1879%)While those in spike was the lowest(0.0020% and 0.0046%).
毛果苔草湿地的物理过程观测设在中国科学院三江平原沼泽湿地生态实验站内,用美国CID公司出品的光合仪对典型湿地中几种优势植物的光合能力进行测定;在80℃干燥的植物样品,粉碎后,分别称量约1g左右,用美国公司Parr型氧弹式热量计测定;研究发现毛果苔草湿地建群种中毛果苔草的净光合速率最大,为47.41μmol/m/s。
-
Not only is that a good idea, it is necessary in order to achieve the performance advantage I promised. In order to make it work, though, you have to add a base case so that it doesn't recurse forever.
不仅是为了取得优势,一种好想法,它是必需的,为了使它工作,不过,你必须增加一种基础情况,因此它不永远递回。
-
A field survey and sampling for chemical analysis was carried out to investigate copper contents in Artemisia argyi and Rumex japonicus Houtt at Zhongtiaoshan nonferrous metal company,Shanxi province.
通过对两种生长在山西中条山有色金属公司附近铜矿渣上的植物艾蒿、羊蹄进行调查和铜含量的测定,结果表明,两种植物有比较高的生物量,均为铜尾矿渣上的优势植物,其根周围土壤的铜含量高。
-
Tachistoscopic visual half-field test was used to investigate functional hemispheric laterality for three kinds of cognitive processing task (reading,simple addition and conceptual decision)on Arabic numerals and numerals in capital of Chinese characters.
用半视野速示术检查阿拉伯数字和汉字大写数字在三种任务加工条件(认读、简单相加、奇偶概念异同判断)下进行认知的大脑两半球机能活动一侧化效应。结果表明:以被试正确反应的百分数为指标,两类数字的三种任务加工均没有表现出明显的视野优势。
-
Pneumatic hammer drilling technology with low wob,low rate of revolution and high capacity to break rock is one of the best effective methods to solve the problems of hard rock drilling.It includes air drilling and rotary drilling technology,so its penetration rate is usually two or three times higher than rotary drilling.
空气锤钻井是一种低钻压、低转速、高冲击破岩回转钻进技术,它兼容了气体钻井和冲击回转钻井的优势,其机械钻速一般比回转钻井高,是当今解决硬岩钻井难题的一种有效方法。
- 推荐网络例句
-
However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
-
Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
-
A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。