群落

The maximum values of the species richness index, Simpson index and Shannon-Wiener index of sawfly communities occurred at the altitude of 1000-1500 m, being 12.293, 0.971 and 3.830, respectively, while the dominance index was the highest at high altitude.

不同海拔叶蜂群落的物种丰富度指数、Simpson多样性指数和Shannon-Wiener多样性指数均以中间海拔(l000~1500m)最高，分别为12.293、0.971和3.830；优势度指数则以高海拔最高。

The results indicated:During the course of vegetation natural recovery, there are different stage of secondary sere at different degree of degraded lands, that is secondary herbosa; secondary scrub; masson pine coniferous forest; conifer and broad-leaved mixed forest; every green broad-leaved forest.

本项研究从比较生态学入手，分析了千岛湖地区退化森林生态系统不同植被恢复措施，即：自然恢复、人工促进自然恢复和人工恢复措施下的群落生态变化，比较了不同措施之间的生态响应差异，研究结果表明：①在植被自然恢复过程中，由于生态系统退化程度的不同，存在草灌丛、灌丛、马尾松林、混交林和常绿阔叶林整个演替序列。

Keystone species can be top predators such as the northern sea otter; however, the term can be usefully applied to any species whose removal would have a significant effect on community structure.

关键种可能是顶端的捕食者，像北方的海獭；然而这个词可以运用在任何一个物种上，只要这个物种被移去时会对群落结构造成重大影响。

It was suggested that the self-organization and self-fertilization capacity were built up with succession, compatible to the vegetation succession principle.

群落自组织、自我施肥能力增强与植物群落演替规律相适应。

The dominant species in community possessed most of the resources and kept self-reproducing successfully in stand, so that the community structure was under a stable status relatively.

群落结构在若干优势种组成掌握大部环境资源且能自我更新维持族群势力下，将呈现相对稳定状态。

In spring, 2004, during shorebird migratory season, a survey on the shorebird community and tidal flat environment was carried out in 10 research sites along the coastline.

在2004年春季，鸻形目鸟类迁徙中转停留时，实地调查位于上海东部沿岸的10个调查点，研究滩涂生境指标与鸻形目鸟类群落关系。

In addition, based on the analysis of the relationship among tidal flat structure, vegetable distribution and shorebird community, the result showed that tidal flat integrity, length of bulrush zone and algae saline zone, landscape diversity, human disturbance are the four key factors for shorebird to select habitats.

通过分析滩涂结构、植被分布与鸻形目鸟类群落之间的关系发现鸻形目鸟类对生境选择中，滩涂结构完整度、藨草带和光滩带的宽度、周边景观的多样性、人为干扰程度都是影响鸻形目鸟类栖息地选择的关键因子。

The important layers of communities were shrubbery, the proportion of shrubberies quantity were over 90%.

群落优势层片为灌木层，灌木所占比例均在94%以上。

Primary results on effects of Bacillus licheniformis formulation to soil microorganism community under the different soil conditions showed that Bacillus licheniformis formulation had higher colonization effect in sierozem than in irrigation-silted soil. The formulation could inhabit Fusarium oxysporum Schl.

研究了地衣芽孢杆菌(Bacillus， licheni formis)制剂在不同土壤类型中对土壤微生物群落的影响，结果表明，该制剂在灰钙土中定殖效果明显高于灌淤土；在灰钙土中能有效抑制病原尖抱镰刀菌Fusarium， ox-ysporum schl。

In this study, the researches are focused on slighting topics, such as the bird biodiversity and heterogeneity of bird community, improvement of statistic methods and blending landscape ecology with avian ecology on scale and heterogeneity.

l、突破现行鸟类群落研究思路，本文结合与鸟类分布密切相关的生境因子，将鸟类分为不同的类型后再进行生态学分析，以避免冗余种对多样性和聚类的影响，正确显示物种在生态系统中的不同地位和作用。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。