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niche theory
相关语句
  生态位理论
    The Research Advances on Niche Theory and its Application
    生态位理论及其应用研究进展
短句来源
    Niche Theory and Its Application in Plant Population Research
    生态位理论及其在植物种群研究中的应用
短句来源
    In this paper, the standard expanded Simpson formula and expanded Schoener formula are used to calculate the niche breadths of 12 chief tree populations and the niche overlaps among the populations in Abies yuanbaoshanensis community,in an attempt to analyse the niche theory and practice on the basic of niche overlap relationship interpopulation,which derives from polar ordination. Results show that:1) The niche theorys for the quantitative study of plant population ecology has practical significance.
    分别运用标准化加权Simpson方程和加权的Schoener公式计测元宝山冷杉(Abiesyuanbaoshanensis)群落中12个主要木本种群的生态位宽度和种群间的生态位重叠值.并尝试把种群间生态位重叠关系以极点排序结果为根据进行生态位理论和实践的探讨.结果为:1)生态位理论在植物种群生态学的定量研究中具有现实意义;
短句来源
    In this paper,we discussed the soil niche in different landscape patch of west coast of Daihai on Liang Cheng county by appling niche theory.
    本文以凉城县岱海西岸平原地区为例,运用生态位理论,探讨了景观不同斑块的土壤生态位。
短句来源
    The niche theory is one of hot spots of ecology research.
    生态位理论是近 2 0 a来生态学研究的热点之一 .
短句来源
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  niche theory
An ecological niche theory approach to the measurement of brand competition
      
The data are consistent with the fine-grained niche theory but difficult to reconcile with bottlenecks and genetic drift.
      
In this paper GF variation is viewed along structural niche axes, and related to classical niche theory; several corollaries of the theory are examined in the light of plant GF patterns.
      
When applying niche theory to plants, the mechanisms of competition are ill-defined and the assumption of bell-shaped response curves for species unrealistic.
      
A reformulation of the continuum concept is presented after considering the implications of the community/continuum controversy and current niche theory.
      
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The dynamics and succession trend of forest communities at two different forestry areas in east Heilongjiang Province were analyzed according to spatial niche theory. Typical natural secondary forest area (Maoer Mountain) as well as another forest area (Mulin county) where the forest types are more similar to primitive broad-leaved Korean pine forests were selected for analysis. Niche breadth and Geo-distances of dominant communities were calculated quantitatively and the spatial niche for...

The dynamics and succession trend of forest communities at two different forestry areas in east Heilongjiang Province were analyzed according to spatial niche theory. Typical natural secondary forest area (Maoer Mountain) as well as another forest area (Mulin county) where the forest types are more similar to primitive broad-leaved Korean pine forests were selected for analysis. Niche breadth and Geo-distances of dominant communities were calculated quantitatively and the spatial niche for forest resources was divided. The results show that in Maoer Mountain area, the tree species occupying great spatial niche are hard broad-leaved tree species such as Acer mono , Fraxinus mandshurica,Ulmus and Phellodendron amurense , meanwhile the niche breadth of soft broad-leaved tree species such as Poplus davidiana , Betula platyphylla is diminishing, which suggests that the forest communities in this area are in the succession stage mainly consisting of hard broad-leaved tree. While in Mulin county area, the succession trend is from primitive communities towards the forests mainly composing of soft broad-leaved trees. The mathematically extending form deriving from Zipf rule is feasible to determine niche spatial resources quantitatively.

文章选择黑龙江省东部典型天然次生林和接近原始阔叶红松林两个区域的森林类型,采用空间生态位理论的分析方法,对组成这两个森林群落类型的主要种群的空间生态位宽度和地理矩进行了定量测定,并对森林资源进行了空间生态位的划分,从而反映出森林群落的演替动态及趋势。结果表明:在帽儿山次生林区,生态位宽度最大的是色木槭、榆树、水曲柳和黄波罗等硬阔叶树种,白桦、山杨等软阔叶树种的生态位宽度正在缩小,森林群落进入了以硬阔叶树种为主体的演替阶段。而在穆棱地区,森林群落从原始地带性顶极群落正向着软阔叶林方向逆行演替。同时说明了基夫(Zipf)定则广延的形式可以确定出各生态位空间的资源数量。

In this paper, the standard expanded Simpson formula and expanded Schoener formula are used to calculate the niche breadths of 12 chief tree populations and the niche overlaps among the populations in Abies yuanbaoshanensis community,in an attempt to analyse the niche theory and practice on the basic of niche overlap relationship interpopulation,which derives from polar ordination.Results show that:1) The niche theorys for the quantitative study of plant population ecology has practical significance....

In this paper, the standard expanded Simpson formula and expanded Schoener formula are used to calculate the niche breadths of 12 chief tree populations and the niche overlaps among the populations in Abies yuanbaoshanensis community,in an attempt to analyse the niche theory and practice on the basic of niche overlap relationship interpopulation,which derives from polar ordination.Results show that:1) The niche theorys for the quantitative study of plant population ecology has practical significance. 2) The definition of fundamental niche and existing niche helps us to understand the interrelation between the Gause's hypothesis principle of populationscompeterepeled and populations overlap, differentiation and cosupplment. 3) The mutually beneficial niche overlap doesn't exist.

分别运用标准化加权Simpson方程和加权的Schoener公式计测元宝山冷杉(Abiesyuanbaoshanensis)群落中12个主要木本种群的生态位宽度和种群间的生态位重叠值.并尝试把种群间生态位重叠关系以极点排序结果为根据进行生态位理论和实践的探讨.结果为:1)生态位理论在植物种群生态学的定量研究中具有现实意义;2)认识基础生态位和实现生态位的定义有助于理解“高斯假说”的“竞争排斥原理”和生态位重叠分化互补现象的相关联系;3)生态位互利性重叠现象在自然界中不存在

In this paper,we discussed the soil niche in different landscape patch of west coast of Daihai on Liang Cheng county by appling niche theory.The result show that different patch corresponds different soil type specific soil type determines the appearing of specific patch,so the soil type plag a main role in the configuration of landscape pattern.

本文以凉城县岱海西岸平原地区为例,运用生态位理论,探讨了景观不同斑块的土壤生态位。斑块的类型不同,其对应的土壤类型也不同。一定的土壤决定着一定的斑块出现,并对景观格局的构型起主控作用。

 
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