群落

As a concentration of seed plants diversity, NBG can produce a large quantity of various kinds of seeds, and the seeds may arrive at diversified habitats with the assistance of dispersal by frugivorous birds, Avian seed dispersal have spread the distribution of seed plants cultivated in NBG and have promoted their natural regeneration, furthermore, it has exerted a positive influence on development and succession of plant communities around the botanical garden.

南京中山植物园作为本地区种子植物多样性中心，提供了丰富多样的种子来源，鸟类传播种子有利于种子到达多样化的生境类型中，促进了植物园内植物的自然更新，扩大了植物的分布范围，丰富了植物园周围马尾松群落，以及虎山森林植物群落中的植物种类，对植物群落的发展和演替产生了积极的影响。

The structures of gamasid mite communities are complicated,with high diversity indices.

主要鼠种体外寄生革螨群落结构复杂，生物多样性指数较高。

Alterniflora salt marsh presented a trend of increasing gradually from the upper to the lower region of the Yangtze Estuary. 21 species were identified. Assiminea sp., Notomastus latericeus, Cerithidea largillierl, Glauconome chinensi, Gammaridae sp.

2沿着长江河口纵向梯度，互花米草盐沼的大型底栖动物群落的物种数和多样性从上游到下游呈逐渐增多的趋势，丰度主要受到沉积物粒径和互花米草高度的影响。

Recently, people found that plant genotypic diversity could pedict community structure and govern processes of an ecosystem.

近年来，人们逐渐认识到植物基因型多样性能够控制群落结构和生态系统过程。

The mountains and its plant region form its distributionbackbone,the heat and water condition in winter is one of the important factors and thetopography and geomorphy makes the distribution patterns complicated.

1在秦岭、淮河以北地区：植物区系的空间变化奠定了区域内森林群落植物物种多样性为纬向方向的空间变化格局。

Under natural conditions, many germinative seeds of the main species of the present community in the seed bank germinate to contribute to the recruitment of seedlings. It is concluded that the present community regenerates well and is stable.

在天然情况下，种子库中优势种及其它主要种类的种子大量萌发出苗，现存群落更新良好，稳定性强。

Gleditsia heterophylla ; richness indices ; evenness indices ; species diversity indices ; community type and structure

野皂荚；丰富度指数；均匀度指数；物种多样性指数；群落类型和结构

The results show that results with four methods are similar, the 5 wind-damaged slash in the restorable communities are divided into 3 formations by 5 investigation. They are Castanopsis carlesii formation, Gordonia acuminata and Cunninghamia lanceolata formation and Neosinocalamus affinis formation.

结果表明，4种分类结果基本相似，所调查的5个风灾迹地恢复群落样地分为小叶栲群系、四川大头茶＋杉木群系和慈竹群系等3个群系。

Up to May 2000, before water delivering, the cutting off runoff of lower Tarim River had been continued for 30 years, all the surface water had disappeared for a long time. It forces the environment which is originally controlled by dry circulation to develop rapidly toward dry environment. The desertification had expanded greatly. As the results, a large number of the saline meadow and halophilous shrub deserta had disappeared.

：由于近30a的断流，使本来就处于干旱环境中的塔里木河下游末端朝着更加干旱的方向急剧发展，致使原有的荒漠植被大量消失，植物成片死亡，或濒于死亡，并形成大片裸地；遗留种类极度贫乏，群落结构简单，一年生草本植物趋于灭绝。

With distance from the lake,the Aerxiaote lake vegetation happened converse succession.From outside to inside,the structure of plant community was gradually simple,biological diversity was shrinking and halophytic vegetation had decreasing tendencies.From outside to inside,there were Aneurolepidium dasystachys,Phragmites australis,Suaeda salsa L.community.Succession tendency was from wetland and typical grassland vegetation to salinization and desertization vegetation.

阿尔肖特湖边的植被随着距湖面距离及地形的不同，植被发生逆向次生演替，自外向内具有植物群落结构逐渐简单，生物多样性逐渐降低、盐生植物逐渐增加有规律性变化趋势；植被由外至内依次形成了赖草、芦苇、白刺和盐地碱蓬群落梯度，其演替趋势是由湿地和典型草原植被向盐碱化和荒漠化植被过渡。

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。