群落

Karst moss is a unique ecosystem, which provide good environment for abundant biodiversity of epiphyte aquatic protozoan community.

岩溶藓类是一种独特的生态系统类型，维持了丰富的附生水生原生动物群落多样性。2006年11月26日至2007年1月26日，对贵阳市香纸沟岩溶沉积环境中8种藓类附生水生原生动物群落进行了野外生态调查，采集样品和标本48份。

To understand the characteristics of the community with dominant species of a invading injurious weed, Eupatorium odoratum, which is widely distributed in Guangxi Province, the floristic composition, geographic elements, life forms, species diversity in the community as well as community structure were investigated.

对隆安屏山石灰岩山地有害的入侵杂草飞机草群落的区系组成、地理成分、生活型、结构及物种多样性进行统计分析，结果表明：该群落内常见的维管植物约有62种，隶属38科58属。

The dynamic changes in community height, coverage, abundance, above ground biomass and plant diversity in Stipa bungeana typical steppe was investigated by a quadrat method. There were six treatments: Unexclosure, 5-year old exclosure (5 a), 10-year old exclosure (10 a), 15-year old exclosure (15 a), 20-year old exclosure (20 a), and 25-year old exclosure (25 a) plots.

采用样方法对云雾山干草原区本氏针茅草地群落进行长期定位监测，对未封育样地和封育5，10，15，20和25年样地群落的平均高度、盖度、多度和地上生物量以及植物多样性进行实地调查分析，以研究围栏封育对草地植物群落特征动态变化的影响。

The indication of MD and HD, according to the fuzzy comprehensive evaluation of vegetation and soil, at Leymus chinensis +forb community, were 0.7426 and 0.5611, respectively, and at Stipa baicalensis + Leymus chinensis community, were 0.7702 and 0.59804, respectively.

根据植被与土壤相结合为指标体系的模糊综合评价得出的指示度分别为；羊草+杂类草群落中度退化区为0.7426、重度退化区为0.5611；贝加尔针茅+羊草群落中度退化区为0.7702、重度退化区为0.5980。

To understand the mechanisms of how plants affect soil biota from a plant physiological perspective, litter exclusion, girdling and root trenching experiments were carried out to investigate the impacts of above/belowground resource inputs on soil nematode communities.

本论文研究了云南哀牢山人为干扰条件下和植物群落自然演替过程中植物群落变化对土壤线虫群落的影响，并通过去凋、环割和切根三种方法分别控制植物的地上地下资源输入，从植物生理机制的角度分析植物对土壤线虫群落的影响机制。

Vegetation ecotype tend to be xerophyte and even hyper-xerophyte and finally replaced by annual plant. Community structure and species diversity also decrease as the ecological environment worsen, In this process, the height, coverage and biomass decreases by 56.6%、 80.8% and 74.2% respectively compared to steppe, and the indices of species richness, diversity and evenness decrease by 76.4%、 56.7% and 32.0%, but β diversity indices increase by 14.6 times, especially the decease of species gregariousness and the breadth and overlay of species Niche shows that grassland tend to be more sandy and vegetation retrogression succession take place.

其中，植被生态型逐渐由中旱生向旱生、超旱生过渡，并最终被一年生植被替代；群落结构及多样性呈明显递减规律，到严重沙化阶段，草群高度、盖度、生物量与典型草原相比，下降幅度分别达到56.6%、80.8%和74.2%；物种丰富度、多样性及均匀性分别降低76.4%、56.7%和32.0%；而群落β多样性增长14.6倍，特别是多年生物种群聚度降低和生态位宽度、生态位重叠值的下降，表明草地沙化，植被发生逆行演替。

Consociation A climax of natural vegetation dominated by one particular species, such as oakwood, dominated by the oak tree, or Calluna heathland dominated by the heather, Calluna vulgaris.

单优种群落；小社会群；单优种群丛：由单一的物种占优势地位的自然植被的顶级群落。例如在橡树林中，橡树就占绝对的优势。在欧洲石楠丛生的荒野，石楠花就占绝对的优势。

Development trend of herbivore community leaded the total community\'s change except 30th, July.

植食类亚群落的变化趋势除7月30日外，主导着总群落的变化。

The results are as follows:1.Compositive species were similar between Pb29 and CK,main compositive groups were Lepidoptera,Coleoptera,Araneae,Homoptera and Hymenoptera.

结果如下： 1。高抗Pb29和CK节肢动物群落的组成种类基本相似，二者均以鳞翅目、鞘翅目、蜘蛛目、同翅目、膜翅目作为群落的主要组成类群。

The vertical cooperation and the horizontal competition relations is an important determinant of firms clustering.

企业是否加入企业群落，关键在于它对该群落预期收益率的看法。

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。