群落

Berberis wilsonae and Caragana erinacea are the species representative of retrogressive succession of the community, and the association between one of them and other species is the most insignificant among all pairs.

在岷江上游林线附近的林草交错区，该群落常常占据阳坡或半阳坡形成疏林，并和位于阴坡的云冷杉林一起形成两大具有特色的森林群落类型。

Different parts of twenty dominant plant species in five plantation communities on the subtropical hilly lands in Heshan of Gunagdong as well as the litters from three of the five plantation communities were sampled, and their gross caloric value and ash content were measured by using a PARR-1281 oxygen bomb calorimeter and a muffle furnace.

从广东鹤山南亚热带丘陵5种人工林群落中采集20种主要植物器官及3种群落凋落叶样品，利用PARR-1281氧弹热量计和马福炉分别测定样品的干质量热值和灰分含量，再计算去灰分热值；按器官、个体和生长型等比较分析植物的热值和灰分特征。

The research about species diversity of desert plant shows that diversity index is higher in co-dominant community.

通过对荒漠植物群落物种多样性特征研究表明，共优种群落的物种多样性指数较单优种群落的物种多样性指数高。

The diversity of microbial community in acid mine drainage is at low level and samples with similar biogeochemical properties have similar microbial communities.

在古矿井区域酸性矿坑水中微生物群落的多样性很低，生物地球化学特性相近的酸性矿坑水由具有相近的微生物群落组成。

Many community attributes in pure Chinese fir plantation were also found in mixed plantation of Chinese firs with alders.

杉木跟桤木混交以后，保留了纯林的大部分属性，各类群在大型土壤动物群落中的地位基本保持不变，双翅目、蜘蛛目、膜翅目仍然是最主要的类群，但这种混交方式改变了一些土壤动物的群落结构参数，多度和丰富度出现上升的趋势，均匀度显著降低。

The niche breadth and niche overlap for dominant species of the arbors layer were calculated.

摘 要：以湘中丘陵区石栎群落为调查研究对象，分析了群落的特征，定量计测了乔木层主要树种的生态位宽度和重叠值。

It is found that (1) the aquatic protozoa communities consists of thirty-six taxa in twenty-six genera and twenty-four families;(2) the groups of ecological function include: Photosynthetic autotrophs (P groups, 25%), Bactivores detritivores (B groups, 44.44%), Saprotrophs (S groups, 2.78%), Algivores (A groups, 11.11%), Nonselective omnivores (N groups, 11.11%) and Raptors (R groups, 5.56%);(3) according to the characteristics of karst water, substrates and mosses, four ecological types and eight sub-types of aquatic protozoa communities can be distinguished.

2水生原生动物群落含6个功能营养群。其中，原生动物光合营养群（P群，Photosynthetic autotrophs），占总数的25%；细菌取食者群（B群，Bactivores detritivores），占总数的44.44%；腐生营养类群（S群，Saprotrophs，占总数的2.78%；食藻者类群（A群，Algivores），占总数的11.11%；非选择性杂食者群（N群，Nonselective omnivores），占总数的11.11%；食肉者群，占总数的5.56%。(3)根据岩溶水流、基质和藓类植物特征，划分该区附生水生原生动物生态群落为4个类型和8个亚类型。

Tree species richness on Mt. Mang was obviously higher than that of Mt. Mao ′ er in the evergreen broad-leaved forests below 1000 m and in brushwoods above 1700 m.

在海拔1000 m 以下的常绿阔叶林群落和1700 m 以上的山顶矮林群落，莽山乔木的物种丰富度均明显高于猫儿山。

In some communities it seems that all species are equally good colonizers and are equally matched competitively.

群落在有些群落中，所有的物种似乎都移殖的不错，彼此在竞争上不分优劣。

In some communities it seems that all species are equally good colonizers and are equally matched competitively.

建设者控制群落在有些群落中，所有的物种似乎都移殖的不错，彼此在竞争上不分优劣。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。