生物群落

The community succession and replacement of late Devonian and their correlation in central Hunan are discussed in more details.

本文分析了Li群落和C-H群落的生物组成，分异度，相对丰富度，生活方式及空间分布等特征；讨论了湘中晚泥盆世群落的演替和取代规律及其空间对比，进一步强调了生物与环境的密切关系及其在地层学上的意义。

Hence,in this study, the change of soil microbial communities were investigated through direct current field ,which is supposed of provide a theory basis for soil electrokinetic bioremediation technology.

而电场作用下土壤微生物群落的变化与利用电场生物修复效率密切相关，本文鉴此研究了直流电场作用下对土壤微生物群落多样性的变化规律，以期为电动生物修复技术的应用提供了一定的科学理论依据。

Based on the data collected from 8 plots and using Shannon and Simpson index, this paper calculated and analyzed diversity of Eupatorium catarium community in Hainan. And, niche breadth and niche overlap of E. catarium community were analyzed by using Levins and Pianka formulae. The results were as follows:(1)The diversity of E.

基于对海南儋州地区假臭草群落的调查，应用辛普森和香农指数测定了该地区不同生境类型的假臭草群落的生物多样性；并以各种杂草的重要值作为生态位计算的资源状态指标，应用Levins公式和Pianka公式计算分析了该地区假臭草群落各物种的生态位宽度和生态位重叠。

The whole reef-building process is closely related to occurrence and development of the metazoan reef-building communities.

群落的整体面貌、生态体系都是由群落内的关键种所决定的，如果将群落内起到核心作用的物种从群落内移走，那么群落的性质，生物的组成和功能都将发生变化。

Among the 5 enzymes, the increase of activity of saccharase was most significant, whose measurements in 0~10 cm soil of 5, 10 and 22 age plantations were 76.80, 167.27 and 261.63 times respectively of the semi-moving sand dune. The soil biological activities in 22-year plantation were already close to that in the natural community.

土壤酶中蔗糖酶的活性增加最为迅速，5、10和22年生群落0~10cm土层中蔗糖酶的活性分别是半流动沙丘的76.80， 167.27和261.63倍。22年生群落的土壤生物活性己接近于天然群落，处于相对稳定的状态。

To this day , a lot of innovative researches focus on the production of the bamboos, the biological and abiological factors of restricting the bamboos' production, the nutrient cycle of the forest system, the relationship between the bamboos' clonal growth and regeneration of the system, the hypothesis for the bamboos' bloom mechanism etc. But the results were too confused, make the ecological process of the bamboo forest be unclear, and this is not enough to conserve panda and its habitat.

目前，各专家学者围绕大熊猫主食竹的生物量生产、制约大熊猫主食竹生物量生产的生物因素和非生物因素、大熊猫主食竹群落系统的养分循环、大熊猫主食竹种群的克隆生长与群落更新、大熊猫主食竹开花机理假说等方面作了大量的研究，但研究结果还具有许多不确定性，这对大熊猫主食竹群落系统生态学过程的深入了解还非常不够，同时也很难满足大熊猫及其栖息地保护的需要。

A survey was conducted to study the biodiversity and seasonal change of insects in four plant communities, Calamagrostis angustfolia, Salix brachypoda-Calamagrostis angustifolia, Carex pseudocuraica, Carex casiocaepa, in a typical annular wetland in Sanjiang Plain by the methods of yellow-pan trap and net-sweeping.

以三江平原典型环形湿地为研究对象，在小叶章群落、沼柳小叶章群落、漂筏苔草群落、塔头毛苔草群落，采用黄盘诱集法和扫网法定期对湿地昆虫群落进行采集，研究了该区内的昆虫生物多样性及其季节性变化特征。

It is made up of two excluding each other ichnocoenosis, namely epibenthic and endobenthic ichnocoenosis; The third one is quite monotony in fossil types, mainly of trails left behind by sediment-eating or detrital-eating animals grazing or feeding along the surfacial layer or on the surface of the sediments.

包括两个相互排斥的群落，底表生物遗迹群落和底内生物遗迹群落；第三个遗迹组合类别十分单调，主要为食沉积物或食碎屑性动物沿沉积物表面或表层牧食或觅食过程中留下的痕迹。

The former is mainly composed by endogenic traces, with rarely epigenic ones, which is typified by the development of domichnia such as Ophiomorpha, Thalassinoides, Granularia and Palaeophycus, it, in turn, can be divided into predepositional and postdepositional ichnocoenosis.

前一个组合主要是底内生物形成的遗迹，底表生物遗迹少见，以居住迹Ophiomorpha，Thalassinoides，Granularia，Palaeophycus等发育为特征，可分为沉积前遗迹群落和沉积后遗迹群落。

The invention relates to a method for analyzing microbial community structure and composition using single-strand conformation polymorphism technology, which solves the problem that the existing biological assay and analysis methods are difficult to analyze the composition and structure of microbial community.

一种采用单链构象多态性技术分析微生物群落结构组成的方法，它涉及一种分析微生物群落结构组成的方法。它解决了目前现有的生物检测和分析方法难以分析微生物群落的生物组成结构的问题。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。