生物群落

Some populations showed clumped distribution was due to the different conditions or the biological and ecological characteristics of their own.

各种群为争取更多的环境资源而随机分布在群落中，少数种群呈聚集分布则是由于生境的异质性或其本身的生物生态学特性引起的。

In order to disclose the adaptive strategies and capacity of Potaninia mongolica Maxim, acquired during its evolution history, the whole response system, which was composed of individual morphology plasticity response, organs anatomy structure response, physiological function response of anti-arid and anti-hotness, activities of protective enzymes response, endogenous hormone adjustment response, sexual reproduction strategies response of seeding, dispreading, sprouting and renewing, asexual reproduction strategies response of clonal growth patterns, clonal growth architectures, clonal growth architectures plasticity, heterogeneous resources utilization strategies, endogenous hormone distribution in clonal organs, foraging behavior, risk-spreading, and resource sharing, individual density allocation patterns response, niche differentiation response, species connection response, allelopathy response and biodiversity components response of the plant was profoundly explored in this paper.The studies come to at least four important results:(1) Taking the sensitive response and evading strategy to adapt to environment stress, Potaninia mongolica Maxim is a successful species has lived through the long-term evolution. Nevertheless, it is narrow climate and soil niche and characteristic of vegetation reproduction which has made the plant a rare and endangered species.

本论文通过对绵刺环境胁迫下个体形态可塑性响应、器官解剖结构响应、抗旱性和抗热性生理功能响应、保护酶系统激活响应、内源激素调控响应，有性繁殖对策中结实、扩散、萌发、更新等生活史过程响应，无性繁殖对策中克隆生长格局响应、克隆生长构型响应、克隆生长构型可塑性响应、克隆生长构型与资源异质性响应、内源激素调控克隆生长构型响应、克隆器官结构与功能响应、觅食行为响应、风险分摊响应、资源共享响应，种群中格局配置响应、生态位分异响应，群落中种间关联、异株克生响应、生物多样性组成响应等内容进行研究，揭示绵刺在进化过程中的适应对策和适应能力，为绵刺保护提供理论依据。

This article introduced the research of soil faunas in the improving of study means, the ecological feature of community, the function of bioindicator, the influence of trace gases metabolism and briefly discussed the development trend in the future.

介绍了土壤动物研究方法的改进、群落的生态特征、生物指示的作用、微量气体代谢的调控以及简要讨论了将来的发展趋势。

The contrasting isotope data between 850 Myr ago and the Neoproterozoic suggest that the terrestrial expansion of photosynthesizing communities preceded the significant climate perturbations of the late Precambrian glaciations, and was followed by a rise of O2 ref.

对比850百万年前和新元古代的同位素数据表明陆地光合作用群落生物的爆发应当先于晚前寒武纪冰川作用的气候变动。

Also the results indicated that soil properties could be changed by length of reforestation and soil quality index increased with vegetation recovery. The similarity index decreased for larger year interval between two reforested lands.

群落特征变化随林龄增加呈现一定的趋势，灌丛层生物多样性有所增加，草本层先增加后降低，均匀度变化不大，整体有所下降，而且林龄差异越大，物种的差异程度也变大。

The most worrying result was the reshuffling of ecological communities-species that live together.

科学家在墨西哥进行研究，因为那里的生物具有多样性，最令人担心的结果是生态群落——居住在一起的物种——的重组。

Key players at the base of the marine food web are diatoms (unicellulor algae with silicified cell walls) and their main predators, the herbiorous copepods.

本文对硅藻产生的防御性物质oxylipins的化学生态学及其在极低浓度下如何其作用进行了综述，同时对其生物合成、测试和化学防御对浮游生物群落结构的影响等进行了讨论。

This paper investigates the relationship among the species composition, density of dominant species and community structure of periphytons, and water quality at eight transects along Suzhou Creek in different seasons.

探讨了苏州河8个断面着生生物在不同季节的种类组成、优势种密度、群落结构与水质的关系。

In this study, we take severely soil eroded land, ban forest (as the control I ecosystem after planting Pinus massoniana and baned) and a mixed forest of Cunninghamia Lanceolata plantation and Pinus massoniana (as the control II ecosystem after planting a mixed forest of Cunninghamia Lanceolata plantation and Pinus massoniana and taking engineering restoration measurement)for study.

本文以未治理的侵蚀地作为对照，以在侵蚀地上营造马尾松并封禁管理以及通过工程措施后种植杉木—马尾松混交林为研究对象，通过野外观测和实验室分析，研究了不同恢复措施对土壤结构、土壤化学性质、群落生物量、植物养分、生物多样性的影响。

The boundaries of individual species, communities and biomes are not distinct and abrupt, but blurred and gradual.

物种、群落和生物群系的边界是不明显的和非突然断开的。

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。