优势

The dominant species at arbor layer are Washiongtonia robusta, Ficus microcarpa, Roystonea regia, Delonix regia, Caryota ochlandra, Alstonia scholaris, Bauhinia variegate, Bombax malabaricum, Erythrina orientalis, Cinnamomum japonicum, Acacia onfuse. The dominant species of shrub layer mainly are Rhododendron simsii, Osmanthus fragrans, Hibiscus rosa sinensis.

植物群落中乔木优势种的组成主要有：华盛顿棕榈、榕树、大王椰子、凤凰木、鱼尾葵、盆架子、洋紫荆、木棉、刺桐、天竺桂、台湾相思等；灌木优势种主要有：杜鹃、桂花、扶桑。

Based on modell about IST's Influence on the enterprises' long term competitive advantage, this article bring forward the index system and general appraisable system to estimate the intension.

基于信息系统技术对企业长期整体竞争优势影响机理模型，提出了信息系统技术对长期竞争优势的影响强度评价指标体系，同时应用模糊数学建立了综合评价模型。

Result 10 308 insects were identified, belonging to 9 orders, 43 families, 68 species of Insecta and I families, 1 species of Arachnida. The result revealed that the individuals of the pest sub-community were more than that of the natural enemies sub-community, the dominant concentration and dominance of the pest sub-community were the biggest, diversity index of the natural enemies sub-community was more than that of the pest sub-community.

结果］共调查昆虫10 308头，分属于昆虫纲9个目、43科6、8种以及蛛形纲1科、1种；野生植物害虫亚群落的物种个体数多于天敌亚群落的个体数，害虫亚群落的优势集中性和优势度最大，天敌亚群落的多样性指数大于害虫亚群落。

Asian (47.4%) and temperate genera mainly constituted by North temperate (50%) and E. Asian (50%). So that the geographical elements are discomplex. In the 25 species of arborous layer, 76% is the middle subtropical zonal type, 16% south subtropical zonal type and 8% north subtropical zonal type, of which the first 6 positions of important value index were all middle subtropical zonal type. This showed that the community was subtropical characteristic. There are 59.5% evergreen and 40.5% deblade of 79 known species in which the mid-phaenerophytes is the first position of all, accounting for 27.8%, and the evergreen broad-leaved species constituted the majority of meso-phaenerophytes which accounts for 15.2%.

乔木层多数优势种为稳定型种群，所以乔木层优势区系成分相当稳定，表明该群落为一种顶极群落。59个种子植物属只有10个分布区类型和4个变型，地理成分不复杂，其中热带分布27属占46.6%，温带分布31属占53.4%；热带分布以泛热带和热带亚洲分布为主，分别占52.6%和47.4%，温带分布为北温带和东亚分布各占50%。25个乔木层树种中，中亚热带地理分布类型的占76%，南亚热带地理分布类型的占16%，北亚热带地理分布类型占8%，重要值指数排列前6名的均为中亚热带地理分布类型，所以该群落为亚热带性质。

In the riverine wetland, there are 96 species of vascular plants belonging to 87 genera and 41 family and their biodiversity indexes lie between 0.099-1.191, plant community is of simple structure and the advantaged species is planted outstandingly, mostly single excellent community. There are also certain amounts of wetland birds, a large percentage of which are Ardeidae, Gallinula chloropus and Tachybaptus ruficollis .

拟建的化工园区沿江湿地共有维管植物41科87属96种，多样性指数介于0.099-1.191之间，植物群落的结构比较简单，优势种突出，大多为单优势群落；湿地鸟类种类比较丰富，以鹭类、黑水鸡、小鸊鷉所占比例较大：沿江圩田粮棉区为高产稳产地区，粮食作物以水稻、小麦为主。

The representative families are Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae, Selaginellaceae and Aspleniaceae. The main genera are Dryopteris, Selaginella, Asplenium, Arachniodes, Pteris, Allantodia and Plagiogyria. The top families' distribution types are cosmopolitan and pantropic ones, the main genera are pantropical ones, while species distribution type belong to the east Asia type and represents the feature of subtropics transition to warm temperated areatype. As for the order of closeness, the sequence of pteridophytes floristic relations between Songyang and the adjacent regions goes as Southwest China, South China, Central China, Japan, North China, Northwest China and Northeast China. The six upland pteridophytes next to Songyang can be put into the same natural flora because of its closest relationship. But compared with other 11 upland fern flora in China, fern in Songyang is not rich enough. There are 37 species endemic to China in Songyang.

结果表明，松阳蕨类植物共有38科72属161种7变种；优势科为鳞毛蕨科、蹄盖蕨科、水龙骨科、金星蕨科、卷柏科、铁角蕨科，优势属为鳞毛蕨属、卷柏属、铁角蕨属、复叶耳蕨属、凤尾蕨属、短肠蕨属、瘤足蕨属；科的分布以世界分布和泛热带分布为主，属的分布以泛热带分布为最多，种以东亚分布类型为主，特别是中国—日本分布类型最多，表现出亚热带向暖温带过渡的特点；本区与邻近地区蕨类植物区系关系的密切程度由大到小依次为西南、华南、华中、日本、华北、西北、东北；与邻近的6个山地蕨类植物区系的亲缘关系密切，可以划为同一自然区；与国内11山地蕨类植物区系相比，松阳的蕨类植物丰富程度不高；松阳拥有37种中国特有蕨类植物及一些珍稀蕨类植物，有较高的保护价值。

Based on data collected at four stations in Daning River in the spring of 2004 and 2005, phytoplankton community structure, vertical distribution, abundance, biomass, C contents, diversity index, richness index and evenness index were studied. The causes of eutrophication and water blooms in Daning River were analysed and control measures were then put forward. The dominant species were Asterionella Formosa, Cryptomonas ovata, Cyclotella caspia, Stephanodiscus neoastraea in the spring of 2004 and those were Pandorina morum, Eudorina elegans, Cyclotella caspia, Cryptomonas ovata in the spring of 2005. Average cell densities, biomass, C contents in the spring of 2004 and 2005 were 171.1×10^5 cells/L, 12.2 mg/L, 1732.2g C/L and 113.1×10^5 cells/L, 10.1 mg/L, 1395.9g C/L, respectively.

报道了大宁河2004年春季和2005年春季浮游藻类的种类组成、垂直分布、数量、生物量以及C含量的调查结果，并应用多样性指数、丰富度指数和均匀性指数对其水质进行了综合评价；对大宁河蓄水后出现的富营养化现象和春季发生&水华&的原因进行了探讨，同时提出了控制水体富营养化的建议。2004年春季，藻类优势种为美丽星杆藻、卵形隐藻、里海小环藻和新星形冠盘藻；2005年春季的优势种为实球藻、空球藻、里海小环藻和卵形隐藻。2004年和2005年的细胞密度、生物量和C含量分别平均为171.1×10^5 cells/L，12.2 mg/L，1732.2g C/L和113.1×10^5 cells/L，10.1 mg/L，

Special attention was paid to the corelationship of lan dscape pattern index and population proˉ portion. Results showed that the diversity and evenness of landscape p attern in Luoyang urban area were on a low level, none of the landscape types exhibited high domina nce,and the green land landscape was in better state.

结果表明，洛阳市区各个研究区景观多样性整体程度不高、分布均匀程度较低且由某种景观占绝对优势的现象较少，绿地景观整体较好；同时相关分析中，城市化率与各个景观格局指数间相关程度较低，其中与景观多样性、均匀度、优势度、破碎度均呈现出负相关性，而只和景观破碎度表现出一定的显著性。

Compared to CK, the rice-fish ecological system increased its density and biomass, decreased the predominance of Bacillariophyta and Cyanophyta, and increased the diversity index.

稻鱼共作显著增加稻田水体浮游植物的密度和生物量，降低硅藻和蓝藻的优势度，增加绿藻和裸藻的优势度，提高了稻田水体浮游植物多样性指数。

To understand the role of the mucosa-associated microbiota in pathogenicity of ulcerative colitis, paired biopsies were obtained during colonoscopy from the ulcerated and nonulcerated gut mucosa of 24 patients with UC. The dominant bacteria and four important groups lactic acid bacteria, Clostridium leptum subgroup, Bacteroides spp.

通过PCR-DGGE技术比较24例溃疡性结肠炎患者肠道内溃疡粘膜以及与溃疡粘膜相距5cm的非溃疡粘膜所黏附的优势菌以及拟杆菌、柔嫩梭菌、乳酸菌和双歧杆菌的组成情况，结果表明同一肠段两个部位的优势菌组成很相似，而柔嫩梭菌及乳酸菌的组成存在很大的差异。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。