群落

The forest community returned from farmland retained the characteristics of original farmland. Its dominant species was Gansu zokor in Qiaoshan,and Chinese zokor in Wuqi.

退耕林地啮齿动物群落保持了原农田群落的特点，其桥山林区的群落优势种是甘肃鼢鼠，而吴旗林区退耕林地为中华鼢鼠。

3The study on the diversity of soil microbial community of Pinus bunging Zucc.et Endl 20 diferent microbial community in the soil were analyzed and compared by species richness index,diversity index and evenness index.The result showed that Species Composition,Quantity Variation and Bio-diversities ect.of soil microbial community differed.

3白皮松土壤微生物群落多样性研究运用丰富度指数、均匀度指数和多样性指数对不同生境的土壤微生物进行分析比较，结果表明，分布在20个样地的微生物各自组成了相应的群落，群落内属的种类、数量组成、多样性、均匀性等都是不同的。

The effect of transgenx Bt cotton on non-target insects The kinds of the dominant species of pests in transgenic cotton field had obvious change, in which the H. armigera was no longer the main pest and the piercing-sucking pests such as Aphis gossypii, Tetranychus urticae, Thrips tabaci etc. rose the main pests. The kinds of the dominant species of predatory natural enemies seemed to be no variation, which was still Propylaea japonica Thunberg. Because of the effect of transgenic Bt cotton on H. armigera laevae-the development delay, the weight reduction, which affected the qualities of parasitic enemies, leading to the reduction of the weight of cocoon and the weight of adult, and the reduction of H.

转Bt基因棉对节肢动物群落整体结构及时序变化的影响 2001保铃棉与冀抗668的相似系数最高(0.8246)，冀抗668、保铃棉与常规防治的相似系数依次0.6459、0.5829，保铃棉和冀抗668与常规不防治的相似系数为0.5669、0.4485.2002 年与冀杭668的相似系数最高(0 。6887)，保铃棉和冀抗668与常规防治相似系数为0.4739、 0.3828，保铃棉和冀抗668与常规不防治的相似系数为0.3124、0.3999，此结果表明，两转Bt 基因棉田节肢动物群落的整体结构一致，相似性较大，与常规防治相比，相似系数有所降低，表明常规功治棉田中人为控制因素对节肢动物有一定影响；转Bt基因棉对节肢动物群落有一定影响，但并不显著。

Diversity between two quadrates within a community decreased with increasing elevation. The peak values of dissimilarity index and Cody index along elevation gradient just matched the ecotones between different vegetation types.

群落内的β多样性随海拔的升高而下降，而群落间的β多样性可以很好地反映群落间的相似性关系，β多样性较大的几个峰值恰好是不同植被类型间的分界。

Based on the survey of community plots, a quantitative analysis of the communities at Luya Mountain is performed with TWINSPAN Two Way Indicator Species Analysis and DCA Detrended Correspondence Analysis methods. 82 quadrates collected from Luya Mountains were classified into 28 types by TWINSPAN, which belong to seven vegetation types. The result of DCA indicated that those 28 types were reliable. Diagonal line of the two-dimensional ordination diagram of DCA reflects the gradient changes of elevation, temperature and humidity. It is considered that the major factors that restrict the community distribution of the mountains are elevation、temperature and humidity.

本文在群落样方调查基础上，采用双向指示种分析法TWINSPAN和除趋势对应分析DCA对山西芦芽山植物群落进行数量分类和排序TWINSPAN等级分类将芦芽山82个样方分为28类，可归属于7个植被型，分类结果反映了植物群落类型与环境梯度之间的关系，并在 DCA二维排序图上得到较好的验证DCA排序轴对角线基本反映了海拔、温度和湿度的梯度变化，表明群落生境所在地的海拔、温度和湿度是决定群落分布的主要因素

In living space, the Wenghui Biota can be redivided into"Upright Community","Depositional Surface Community", and"Super-water Community", to form a primordial tri-dimension ecosystem.

瓮会生物群在空间上可分为&挺立群落&、&沉积表层群落&和&水体上层群落&，而构成了一个原始而相对完整的生态系统。

It is consisted of several enterprises those strategies realization depend on each other. Its cohesions determined by the degree of the dependent relation of the strategies of its members.

文中我们还从企业群落与企业集团的关系，企业群落的静态结构和动态演化等方面对企业群落的概念及其在现实中的存在和表现做了一些探讨。

Luozha River is a first branch of Lancang River in its middle section. A less known deciduous monsoon forest was recently discovered on the dry-hot banks of Luozha River. The deciduous monsoon forest is 15-20 m tall with Lannea coromandelica Colona floribunda. Mallotus philippensis as the dominant tree species, and Microstegium ciliatum Eupatorium odoratum、Ageratum conyzoides are the dominant species in the shrub-herb layer.

对罗扎河下游鲜为人知的落叶季雨林进行了群落生态学研究，结果表明：罗扎河下游落叶季雨林群落高度在15~20m之间；群落乔木层以厚皮树、一担柴、粗糠柴、毛果扁担杆、灰毛浆果楝等树种为优势种；灌草层以刚莠竹盖度最大，其余如飞机草、藿香蓟、蹄盖蕨Athyrium sp。

The relationship between biomass and succession gradient also showed unimodel pattern: y=-8.7647χ^2+86.696χ+67.14 (R^2=0.6164). As for functional groups of life form, annual plants showed decreasing trend in the community, perennial grass showed increasing tendency, while sedges and perennial forbs both showed increasing tendency, in which the increasing extend for sedges slowly and for grasses sharply.

一年生植物在群落中的数量呈下降趋势；禾本科植物在群落中的数量呈上升趋势；莎草类及杂类草植物在群落中的数量均呈增加趋势，但莎草类植物增幅不大，而杂类草植物则急剧增加。

Garrigue Scrub woodland a secondary formation derived from the original mixed forest, characteristic of limestone areas of the Mediterranean region, with low rainfall and thin, dry soils.

咖里哥宇群落：是多矮小植物，起源于原始混合森林的次级群落，该群落具有的低降雨量及稀薄干燥的土壤，是地中海石灰岩地区的特征。

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。