群落发生

In a conclusion, there were a considerable proportion of relict and remnant elements which can be traced back to Mesozoic, and even Paleozoic, as well as typical ancient endemism. All of these fully showed evolutionary conservatism and phylogenetic antiquity of the Alsophila spinulosa community during the process of vegetation evolution.

由此可见，桫椤群落区系组成与起源年代都十分古老；与桫椤伴生的成分中存在较大比例的中生代甚至古生代的古老遗存物种，也明显表现出其在植被进化中的保守性和种系发生的古老性。

The results demonstrate that successive changes of vegetation and avifauna distribution gradually take place along with the soil salinity and spatially present preferable distributing orderliness with the river mouth extension.

研究结果表明，黄河三角洲湿地植被群落与动物的种群随着土壤盐分变化逐渐发生演替变化，而随着河口淤积延伸在空间上呈现较好的分布规律。

In the broad-leaved Korean pine climax forest, the fine root climax production of the community occurs in July and October, but the dominant arboreal species, understory arboreal species and fine roots of grass have a different production dynamics. It is important to sort the fine root species because accurate fine root production sources have a different fine root dynamics.

在原始阔叶红松林中，群落细根的生长高峰发生在7月和10月，但其中主要树种、其他木本和草本的细根有着不同的生长动态，所以在计算细根生产量时应该分类计算，才会得出较为准确的结果。

The variation of commensal rodents' community structure in Suzhou was due to the rodents' habitat destroyed for municipal construction and the human's intervention.

结论城市环境改造和人为干预活动，改变了鼠类栖息的生态环境和栖息场所，家栖鼠的群落结构也发生了相应变化。

The riparian zone has four-dimensional structure characteristic with portrait, diastrophism, perpendicularity and changing by time which is outcome between land and hydrophily in space. It has important function in landscape pattern.

河岸带具有四维结构特征，即纵向、横向、垂直方向和时间变化(如河岸形态变化及河岸生物群落演替)4个方向的结构，是空间内陆地——水生态系统发生直接相互作用的产物，在景观格局中有重要的作用。

The differentiation of inner structure of plantations after the canopy completely closure at about 30 yr, reflected the dynamics of the interact of self-thinning and species inbreaking of outer communities.

人工林在30年左右冠层完全郁闭后，群落内部的结构进一步发生分化，体现了自疏过程和外来物种侵入相交织的动态过程。

The lady bird beetle Ballia obscurosignata Liu is an important natural enemy of the Japanese pine bast scale Matsucoccus matsumurae Kuw., and its capacity in suppressing the scale was recently demonstrated in Hangchow district of Chekiang Province.

隐斑瓢虫是近年来在杭州地区发现的日本松干蚧的一种重要捕食性天敌。该虫在杭州一年发生四代，其年发生规律基本上和日本松干蚧的生活周期相吻合，而且能在松林中形成比较稳定的群落。

The ecological type structure and biomass structure of community had lower variation and didn't change dramatically with the loss of species.

群落的生态类型结构和生物量结构具有相对的稳定性，并不因某些物种的丢失而发生明显的改变。

It was different in the occurring time and quantity of dominant species: in early spring, there were more Psyllidaes in the dense planted area, but more main pests Opatrums and Scarabeidaes and their nature enemies Carabidaes and Spiders in the low planted area. After autumn, the quantity of Psyllidae was the largest in the low planted area, but the least in the dense planted area.

群落个体数稀植区在大部分时间内均高于其它2区。3个区的主要优势害虫及其天敌在发生时间和数量上有一定差异，早春密植区木虱发生数量较大，稀植区中砂潜、金龟子类害虫以及步甲、蜘蛛类天敌数量相对丰富，入秋后稀植区木虱发生量最大，密植区最小。

The plain region plant communities had lower diversity and evenness,and severer damage imposed by the Japanese wax scale,while the hill region plant communities had higher diversity and evenness,and milder damage imposed by the Japanese wax scale.

从群落学角度出发，通过群落特征指数和典型相关分析的方法，分析枣园植物群落、景观的结构特征以及日本龟蜡蚧发生程度与植物群落、景观多样性之间的关系。

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。