Results demonstrate that with the succession going on from herbosa→shrubs→coniferous forest→theropencedrymion→evergreen broad-leaved forest, abundance and diversity index of species, biomass and productivity of vegetation all show a rising trend prior to the formation of a mature and stable biotic climax.
结果表明：随着草丛→灌丛→针叶林→针阔混交林→次生常绿阔叶林正向演替的进行，在未形成成熟而稳定的顶极群落之前，物种丰富度、物种多样性指数、植被生物量及生产力都呈增大趋势。
The density index CPUE decreased year by year. Coilia mystus, Collichthys lucidus, Harpodon nehereus were dominant species.
相对多度表明，优势种出现年际变化，凤鲚、棘头梅童鱼、龙头鱼为优势种。
The composition of forest plant diversity was represented by total number of species, richness, species diversity index and evenness, meanwhile, the structure of forest plant diversity was divided into horizontal diversity and vertical diversity. The horizontal structure was described by pattern diversity, and the vertical structure was described by vertical structure diversity and coverage weighted foliage-height diversity.
将森林植物多样性的组成用物种数、集中优势度、物种多样性指数和物种均匀度指数表征，森林植物多样性的结构分为水平结构和垂直结构，水平结构由格局多样性指数表征，垂直结构由垂直结构多样性指数和盖度加权叶层多样性指数表征。
Methods We investigated mouse density by cage-catch in epidemic area and the surroundings during the outbreak of plague, identified species, counted mouse density and flea index, caught dissociated flea indoor by flea sticky paper and counted the index.
方法在鼠疫暴发流行期间对疫区及周围地区采用笼捕法进行鼠密度调查，捕获的家鼠进行种类鉴定并采集鼠体蚤类，计算鼠密度及鼠体蚤指数；采用粘蚤纸法粘捕室内游离蚤，计算游离蚤指数。
Longipes, G. laxum, C. guangxiense and C. pentagynum were similar, but no features could characterize the species. There was no significant correlation among the content of total gypenosides and the structural index including the ratio of thickness of epidermis and cortex to stem diameter, vascular bundle area to stem area, external phloem area to stem area, and thickness of palisade tissue to that of spongy tissue.
结果表明，5种植物茎叶结构的基本特征相似，各解剖指标只有数量差异，没有种的特异性，茎表皮和皮层厚度与茎直径的比值、维管束面积与茎面积的比值以及维管束外生韧皮部面积与茎面积的比值、叶的栅海比等解剖指标均与绞股蓝总皂苷含量没有明显的相关性。
The similarity index between the standard spectra of one algae species and hypothetical mixed spectra of algae and spectra of mixed algae assemblage was calculated.
光谱混合及混合海藻荧光光谱与标准谱之间的光谱相似性指数与混合比例之间存在线性关系。
Based on the field investigation, change of the plant species diversity index ent tourist disturbance.
在野外样带调查的基础上，以物种重要值为综合指标，分析了不同旅游干扰程度对马仑亚高山草甸植物物种多样性指数、丰富度指数和均匀度指数的影响效应及变化规律。
A stepwise regression analysis of species richness and environmental factors showed that the species richness was significantly correlated with growing season precipitation and warmth index.
对物种丰富度与环境因子之间进行逐步回归，发现物种丰富度与生长季降水和温暖指数呈显著正相关。
The plant species diversity of 9 associations in the Oxytropis coerulea community of mount Wutai was studied by using richness index, Simpson index, Shannon-Weiner index and evenness index, respectively. The results indicated that: The quantity of populations and species in the community have obvious unevenness character, which leads to variation of λ. index and H'index among different associations. R1 and H'increase firstly, and then decline slowly with the increase of elevation, which reach peak value at 2100 while E1 index waves steadily with elevation change.
应用丰富度指数(R1)、Simpson指数、Shannon-Weiner指数和均匀度指数(E1)研究了9个群丛的植物种多样性，结果表明：种群数量及其种群内个体数量具有明显不均匀性，进而导致λ指数和H'指数在不同群丛间的变化，R1、H'指数随海拔高度增加表现为先上升而后缓慢下降，在海拔2100m处达峰值，E1指数则随海拔变化呈现不稳定波动。
The species and phytomastigophora index of Liwan Lake were 100 and 24%, while those of Liuhua Lake were 107 and 26.16%, and those of Luhu Lake were 138 and 27.54%, respectively.
目前 ，各地在进行城市环境综合治理时，均将城市内水体的富营养化及其防治作为重点，并已取得一定的效果[4，5] 。
The result indicated that the numbers of protozoan species, phytomastigophora index, colonization process parameter (S eq, G, T 90%), diversity index d and community pollution value could well show the water quality.
在我国 ，城市湖泊位于城市内或城市近郊，具有景观、旅游娱乐和养殖等多种使用功能，也曾是城市生活污水和工业废水排放场所。
During restoration experiment, several functional and structural parameters, species, percentage of phytomastigophora, CPV, diversity index, heterotro-phy index and similarity index, were determined weekly.
生态治理过程中水生生物群落的恢复，从理论上讲首先是微型生物群落，然后才是浮游动物、底栖动物和鱼类。因为生态系统的演替，应是从r一对策占主导逐渐发展到k一对策占主导。
Antarctic krill Euphausia superba was particularly important in the diet of most abundant flying bird species in assemblages. The overlap index for krill sizes consumed give highest values in the comparisons between kelp gulls and chinstrap penguins.
南极磷虾是绝大部分飞翔海鸟的主要食物，研究发现黑背鸥与纹颊企鹅所捕食的南极磷虾的大小最为接近。
The structure of arthropod communities in paddy field located in complex habitats and in monotonous habitat was analysed. In complex habitats, species richness and individual number of predators were high and its index of dominnant concentration was low.
对多样化生境稻田与单一生境稻田节肢动物群落结构动态的比较研究表明：多样化生境稻田中，捕食性节肢动物亚群落的物种丰富度与个体数量高于单一生境稻田，而优势集中性则低于单一生境稻田。
Structure index was significantly (P.05) different among three plant species whereas channel index and enrichment index were not. Plant species not only modified abundance of plant-feeding, omnivorous and predatory nematodes, but also percentage of each trophic group. Bacterivorous and fungivorous nematodes were affected most by the differences in plant species.
研究表明在沙地生态系统中，3种植物根际土壤线虫群落的多样性、丰富度、均匀度和线虫总数虽然都存在一定的差异，但不显著；功能多样性指数中结构指数存在显著差异，而通道指数、富集指数不存在显著差异；3种植物对根际土壤线虫群落中各营养类群线虫的比例有显著影响。
The results showed: the variance analysis of colour parameters among different species eucalypt wood are significant and the color index in heartwood is higher than that in sapwood.
摘 要：以五种桉树人工林木材为研究材料，用测色仪和氙衰减仪测试了五种桉树木材的颜色和耐光性，比较了这些桉树木材的颜色参数，结果表明：不同种类桉树木材材色参数之间差异显著，桉木心材部分的色品指数和色饱和度高于边材；桉木的耐光性随氙灯照射时间的增加而逐渐变差。
7 Species occurred in infauna and the dominance species obviously changes as the seasons going. From the community index, infauna community is instable.
果表明，底内动物共出现7种，种类组成贫乏，优势种变化明显，生物量较98~98 年杭州湾调查资料有一定降低，物种多样性指数低并有下降趋势，群落结构极不稳定
The diversity index of soil dematiaceous hyphomycetes was the highest but the evenness was lower in town-oasis, whereas in desert and gobi the diversity index was obviously lower, and the species evenness was higher.
在小镇-绿洲生境中，土壤暗色丝孢菌的Shannon-Wiener多样性指数最高，均匀度较低；而在沙漠和戈壁生境中多样性指数明显较低，而物种的均匀度较高。
We demonstrate that the bispectral index monitor can detect interhemispheric asymmetry in the dolphin species Tursiops truncatus.
在宽吻海豚属中，我们用 BIS 监测可以发现两个球之间脑电活的不平衡。
The high diversity index and uniformity index showed the stability of food zooplankton community. Paracalanus parvus was the dominant species in Sansha Bay in each season.
三沙湾饵料浮游动物群落多样性丰富，均匀度均较高，表现出较高的稳定性；小拟哲水蚤是三沙湾的主要优势种类。