群丛

陕西省的栓皮林可划分为6个群丛。

Variabilis forest in Shaanxi province could be divided into 6 type association .

群丛一词始终被英国工作者用做他们的植物区系单位。

The term association has been used throughout by British workers for their floristic units .

在braun-blaoquet学派中，层片群丛的描述不限于隐花植物群落。

In the braun-blaoquet school the description of synusia associations was not confined to cryptogam communities .

每个小样方必须比整个基群丛更为统一。

Each small quadrat must be more homogenerous than the sociation as a whole .

用H指数、λ指数和E1指数来描述群丛性质时，可以得到较好的一致性。

With H ' index , X index and El index to describe the cluster nature of the group , you can get better consistency .

根据TWINSPAN分类结果结合野外调查情况可将侧柏群落划分为12个群丛。

P. orientalis communities were classified into 12 associations by TWINSPAN .

DCA排序结果表明制约侧柏群落不同群丛分布的主要因素是坡度和坡向。

The results of DCA ordination indicated that the main factors that restricted community distribution were aspect and slope .

应用TWINSPAN和DCA相结合的方法，对滹沱河流域湿地植被74个样方进行分类和排序，将湿地植被分为16个群丛。

TWINSPAN and DCA were combined to classify and collate seventy five quadrats of the wetland vegetations in the Hutuo River into 16 associations .

采用样方法取样，依据重要值指标运用双向指示种分析（TWINSPAN）法，将山西中条山中段植被群系分成16个群丛。

62 samples collected in Midpiece of Zhongtiao Mountains were classified into 16 associations by Two-way Indicator Species Analysis ( TWINSPAN ) .

应用TWINSPAN把42个栓皮栎群落样方划分为8个组，根据植被分类的原则命名为8个群丛。

The 42 plots were divided into 8 groups by TWINSPAN , which belong to 8 associations according to the principle of vegetation classification .

各群丛的SW指数、物种丰富度、地上生物量、裸地面积按照生境序列作图，显示中生性草甸具有最高的物种丰富度和地上生物量。

The study on Shannon-Wiener index , species richness , aboveground biomass and bare land coverage revealed that the meadows in moderate habitat had the highest productivity , species richness and less bare land coverage .

TWINSPAN将荆条群落划分为13个群丛，分类矩阵图明显反映出坡向和土壤湿度两个环境梯度。

The results of TWINSPAN indicated that the communities were classified into 13 associations , and the classification matrix indicated two environmental gradients , light intensity and soil humidity .

TWINSPAN将53个样方分为14组，根据植被分类的原则划分为14个群丛，论述了各群丛的群落学特征。

53 samples were divided into 14 groups by TWINSPAN . Based on the principle of vegetation classification , were classified into 14 associations and their community characteristics are described .

主要优势种的DCA排序图与样方的DCA排序图有很大的相似性，优势种的分布格局在很大程度上决定着植物群丛的分布格局。

The ordination diagram of the dominant species by DCA was similar to the one of the quadrats by DCA to a large extent and the distribution of the dominant species determined the distribution of the associations in a large measure .

采用TWINSPAN分类法将亚高山草甸旅游地段的草甸群落划分为为4个群丛，反映了在不同旅游干扰强度下，草甸植被动态变化特征。

This simplifies the selection for tourism impact indicators for application purpose . ( 2 ) Meadows community in subalpine meadow travel section was divided into 4 groups with TWINSPAN . The meadow vegetation dynamic change characteristics was reflected under the different tourism disturbance intensity .

等级系统中的基本单位是群丛。

The fundamental unit of the hierarchy is the association .

榛属群丛对土壤理化性质影响的研究

Study on the effect of Corylus cluster on physicochemical properties of soil

群丛总复盖度仅为25&30%。

The projective total cover-degree of this association is only about 25-30 % .

把一个生物群丛作为一个系统来看到至少有两个好处。

Viewing a biological association as a system has at least two advantages .

主要植被类型有8个群系纲，包括27个群系和30多个群丛，顶极群落是常绿阔叶林。

There are 8 main formation classes , 27 Formations and about 30 Associations .

同时针对不同群丛的特点提出合理化的经营和管理措施。

Reasonable management advices were put forward according to the characteristic of different associations .

水稻群丛结构和辐射传输分析

Study on Rice Cluster Architecture and Radiation Transfer

根据37个样方调查的资料，区分出3个群丛6个亚群丛。

Based on data from 37 sites , three associations and six subassociations were identified .

冬小麦群丛反射率农业气象数值模拟研究

An Agrometeorological model for simulating the change of albedo of Winter Wheat during a day

自然植被分为4个植被型、10个群系和10个群丛。

The natural vegetation consists of 4 vegetation types , 10 formations and 10 associations .

每一个群丛的物种组成各不相同，其结构和功能也就有所差异。

Each Association had different species composition , so their structure and function were different too .

元谋干热河谷植被的类型研究Ⅰ.群丛以上单位

A research on the vegetation types of the Dry-hot River Valley in Yuanmou I. units above Association

扬州花境植物群丛以常绿灌木为优势群体，配以草本花卉。

In Yangzhou flower border communities , evergreen shrubs were the dominant groups , together with the herbaceous flowers .

荩草+美丽胡枝子+华山松群丛的演替方向是松栎混交林；

Ass. Arthraxon hispidus + Lespedeza formosa + P. armandii would evolve into pine and oak mixed forest . Ass.

有红树林、沙生植被、浅水植被、沼泽植被4种植被类型和18个群系、22个群丛。

The vegetation in the area of wetlands includes mangrove , sand vegetation , shallow water vegetation and marsh vegetation .