niche overlap

All the dominant species showed similarity and niche overlap adaptable to the community environment .

各优势树种，均表现出一定程度的对环境适应的相似性和生态位重叠。

The niche overlap between Chinese fir and the same other tree species varied in different resources space .

在不同资源空间中，杉木与同一其它树种之间的生态位重叠发生变化。

On the measurement of niche overlap in plant communities

植物群落中生态位重迭的计测

The study on ecological niche overlap relations of several populations on Leymus community in Northeast Plain

东北羊草群落种群生态位重叠关系研究

The niche overlap and exploitation competition had some correlativity , but they were not equivalent .

生态位重叠与竞争存在一定的关系，但并不能等同起来。

Niche overlap of insect pests and their natural enemies was highest in the IPM system plantation .

主要害虫与天敌的生态位重叠值，综防园较自控园和化防园高。

The Negative correlation , Negative association between various pairs of Species Because different biological characteristics , different ecological adaptability , niche overlap .

种对间负相关或负关联是由于不同的生物学特性、不同的生态适应性及生态位重叠所导致。

And the results showed that the niche overlap degrees between each two tourism cities were in high levels , so the competition pressures also were in high level .

发现浙江省区域内的11个城市间旅游生态位重叠度都处于较高水平，彼此之间竞争压力比较大。

The greater the niche overlap , populations of the greater proximity of the ecological use of resources , the higher the degree of similarity .

生态位重叠越大，种群间的生态相近性越大，利用资源的相似性程度越高。

The paper holds that the degree of competition between enterprises is proportional to their niche overlap in an enterprise ecosystem where the environmental resources are limited .

在一个环境资源有限的企业生态系统中，企业之间的竞争程度与其生态位重叠的程度成比例关系。

Niche overlap is defined as an ecological similarity between two species , and thereby the improved formula for measuring niche overlap has been deduced .

将生态位重叠定义为两个种在生态学上的相似性，继而推导出计测生态位重叠的改进公式。

ON THE MEASURES OF NICHE OVERLAP AND SIMILARITY Small mammals had two different ways to avoid over-competition : food separation and microhabitat specialization .

关于生态位重叠与相似的度量空间生态位完全重叠的种类，是通过选择不同的食物以及不同的微生境来避免过度竞争。

Recently there have been quite a few discussions on the measure of niche overlap , and a number of different measure methods have been mads known .

关于生态位重叠的度量最近有许多讨论，并且已有许多不同的度量方法。

At the logistic park level , the park construction planning should be reasonable ; the strategy of niche overlap differentiation should be implemented ; the implementation of environmental logistics strategies .

在物流园区层面上，要合理规划园区建设；实施生态位差异化战略；实施绿色物流战略。

The niche overlap of major tree populations counterpart was larger , which showed that the trend of share of resource utilization was obvious and the stage of community was good .

大多数种对的生态位重叠较大，对资源的共享趋势明显，群落稳定性较好。

The analysis for niche overlap index showed that the group of neutral arthropod survive the other groups for a period of time and it also played a role in regulating food chain ;

通过对生态位重叠指数的分析可知，中性节肢动物与其它类群之间在利用时间资源上存在着竞争，它还在群落中起调节食物链的作用；

Predators and parasitoids had a narrower niche overlap with the target pest , but had a wider niche overlap with the neutral species .

捕食性和寄生性天敌与鳞翅目害虫的生态位重叠均较小，而与腐生和游逛种类的生态位重叠较大；

Existing theories explained for the problem related to the brand overlap . In recent years some scholars use ecological theory , with the reference of niche overlap formula for evaluation of brand overlap .

现有的理论研究成果多是对品牌重叠相关问题的分析，近些年也有学者运用生态学理论，引用生态位重叠度计算公式对品牌重叠度进行测评。

Further researches show that multi-dimensional niche overlap is usually bigger than the product of one-dimensional niche overlap when each dimension of resources which the species utilizes is independent from others .

进一步研究表明：当物种利用的各个资源类型独立时，多维生态位的重叠往往大于各维生态位的重叠的乘积。

Whereas , for the natural forest consisted of native species , the niche overlap was low and the interspecies relationship was harmonious . The composition structure of community thereby was more stable .

而由本地树种组成的天然林，生态位重叠小，种间关系协调，群落组成结构的稳定性更高。

However , ecological niche overlap values were very small , mainly because the study range in this paper were a larger geographical areas , and regarded a district ( county ) as a larger plot .

但生态位重叠值都很小，这主要是研究地的地理范围较大，把一个区（县级）当作一个较大的样地。

Note : The figure of first line mean the temporal niche overlap , while the figure of second line the spatial niche overlap and the figure of third line the nutritious niche overlap .

注：表中上行数值表示时间生态位重叠值；中行数值表示空间生态位重叠值；下行数值表示营养生态位重叠值。

The temporal and temporal-spatial two-dimension niche overlap value of predatory arthropod to rice planthopper on medial resistant variety was higher than that on resistant rice planthopper and susceptible variety .

中抗品种天敌与稻飞虱的时间生态位以及时间-空间二维生态位重叠明显高于抗虫和感性品种中天敌与稻飞虱的重叠。

The niche overlap values between primary parasitic fleas were more than those of minor parasitic fleas on Marmota baibacina and Citellus undulatus in the time resource .

灰旱獭和长尾黄鼠主要寄生蚤之间在时间资源维上存在较高的生态位重叠，而次要寄生蚤之间的重叠值则较小。

Human-caused disturbance produced unusual habitats , which could promote or restrain the growth of the plant . This changed the ability of using the height space resources so that the height niche overlap between species varied .

人为干扰所产生的异质性生境可促进或抑制植物种的生长，使物种利用高度空间资源的能力发生变化，从而使种与种的生态位的重叠状况发生变化。

On the basis of the result of identification , the paper divides the competitors according to the niche overlap and niche intensity , and put forward the business niche separation tactics , including three dimensions of time , space and target market ;

在竞争者识别的基础上，本论文根据企业生态位重叠度和强度对企业竞争者进行分类。从时间、空间和目标市场等三个维度，提出了企业生态位分离策略；

Though the value of the niche overlap between pine and oak among the arbor species form the biggest one , both of them could grow in the same stand very well , resulting from that the wider overlap makes species competition decrease .

乔木树种之间以油松与辽东栎和槲栎的生态位重叠值最大，但却能形成混交林，这主要是广泛重叠导致了种间竞争减弱的缘故。

The maximum difference of 0.126 2 and the minimum difference of 0.036 1 for niche overlap can be gained by using the principle of Cody & May and thus it is a good practice to avoid this principle . mathematical ecology ; niche ;

利用Cody和May的原则会带来生态位重叠的偏差最大为0.1262，最小为0.0361，因此应该避免使用Cody和May的原则。

In this article , ecological niche overlap of several populations of different leymus communities in Northeast leymus plain was studied and revealed utilization capability of several populations of different leymus communities on environmental resources and adaptability , spatial position capability on ecological factors .

本文通过对东北羊草草原不同羊草群落内各种群间生态位重叠关系的研究，揭示出羊草群落各种群对不同环境资源的利用能力及对生态因子的适应能力和占据空间的能力。

Predatory mite has narrower temporal niche overlap , but has wider spatial-niche overlap with the two mites , and its niche breadth of food recipes narrow , so it can be utilized to control the mites with the other natural enemies .

天敌与叶螨间的时空生态位重叠以及天敌食谱生态位宽度结合分析有助于合理评价天敌的控制作用。