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模糊超体积
相关语句
  fuzzy hypervolume
    Based on the theory of fuzzy hypervolume niche,8 species' niches of Chimonanthus praecox community in northwestern Hunan province are studied according to the basic data of the samplings.
    在模糊超体积生态位理论的基础上,根据样地调查所获得的基本数据,研究了湘西北蜡梅群落中8个物种的生态位.
短句来源
    Study and Application on the Theory of Fuzzy Hypervolume Niche
    模糊超体积生态位理论的探索与应用
短句来源
    Fuzzy hypervolume niche was proposed to overcome the limitation of Hutchinson's niche concept and the formulas to measure two important indexes—niche width and niche overlap which can be easily applied in practice.
    为克服Hutchinson的生态位定义的局限提出了模糊超体积生态位,以及度量生态位的两个重要指标——生态位宽度和生态位重叠,新公式便于应用。
短句来源
    Based on Hutchinson niche and Guangxia Cao's definition, Fuzzy hypervolume niche evolves the theory of fuzzy niche: the niche is a fuzzy hypervolume; the niche of the species is a hypervolume with fuzzy boundary which is formed by the n-dimensional resources (time, space, temperature, humid, trophic, ...) necessary for the species' continuous existing and multiplying;
    在Hutchinson生态位和Guangxia Cao的定义的基础上,模糊超体积生态位发展了模糊生态位理论:物种的生态位是可以使物种生存和不断繁殖的n维环境变量(时间、空间、温度、湿度、营养……)所形成的边界模糊的一个n维超体积;
短句来源
    Based on fuzzy hypervolume niche,the relations of measurement between multi-and one-(dimensional) niche are studied and the formulas for making comparison with some other metric formulas are simplified.
    基于模糊超体积生态位,探索了多维生态位度量与一维生态位度量的联系,简化了模糊超体积生态位的度量公式,并与常用的生态位度量公式作了比较.
短句来源
  fuzzy hypervolume
    Based on the theory of fuzzy hypervolume niche,8 species' niches of Chimonanthus praecox community in northwestern Hunan province are studied according to the basic data of the samplings.
    在模糊超体积生态位理论的基础上,根据样地调查所获得的基本数据,研究了湘西北蜡梅群落中8个物种的生态位.
短句来源
    Study and Application on the Theory of Fuzzy Hypervolume Niche
    模糊超体积生态位理论的探索与应用
短句来源
    Fuzzy hypervolume niche was proposed to overcome the limitation of Hutchinson's niche concept and the formulas to measure two important indexes—niche width and niche overlap which can be easily applied in practice.
    为克服Hutchinson的生态位定义的局限提出了模糊超体积生态位,以及度量生态位的两个重要指标——生态位宽度和生态位重叠,新公式便于应用。
短句来源
    Based on Hutchinson niche and Guangxia Cao's definition, Fuzzy hypervolume niche evolves the theory of fuzzy niche: the niche is a fuzzy hypervolume; the niche of the species is a hypervolume with fuzzy boundary which is formed by the n-dimensional resources (time, space, temperature, humid, trophic, ...) necessary for the species' continuous existing and multiplying;
    在Hutchinson生态位和Guangxia Cao的定义的基础上,模糊超体积生态位发展了模糊生态位理论:物种的生态位是可以使物种生存和不断繁殖的n维环境变量(时间、空间、温度、湿度、营养……)所形成的边界模糊的一个n维超体积;
短句来源
    Based on fuzzy hypervolume niche,the relations of measurement between multi-and one-(dimensional) niche are studied and the formulas for making comparison with some other metric formulas are simplified.
    基于模糊超体积生态位,探索了多维生态位度量与一维生态位度量的联系,简化了模糊超体积生态位的度量公式,并与常用的生态位度量公式作了比较.
短句来源
  “模糊超体积”译为未确定词的双语例句
    The results indicate that multi-dimensional niche overlap is usually bigger than the product of separate niche overlaps if resource dimensions are independent and the formulas are close to Simpson Index and Schoener Formula respectively.
    结果表明:当物种利用的各个资源类型独立时,多维生态位重叠往往大于各维生态位重叠的乘积; 模糊超体积生态位的度量公式分别与Simpson指数和Schoener公式的形式相近;
短句来源
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  fuzzy hypervolume
A minimization of the fuzzy hypervolume makes no sense here.
      
For example, Gath-Geva's index that uses the value of fuzzy hypervolume as a measure is a good choice for compact clusters.
      
Optimalnumber of substructures in the data set can be estimated from the minimum of the fuzzy hypervolume and maximum of partition density.
      
Optimal number of substructures in the data set can be estimated from the minimum of the fuzzy hypervolume and maximum of partition density.
      
The cluster validity is proportional to the partition density and inversely proportionalto the fuzzy hypervolume.
      
更多          
  fuzzy hypervolume
A minimization of the fuzzy hypervolume makes no sense here.
      
For example, Gath-Geva's index that uses the value of fuzzy hypervolume as a measure is a good choice for compact clusters.
      
Optimalnumber of substructures in the data set can be estimated from the minimum of the fuzzy hypervolume and maximum of partition density.
      
Optimal number of substructures in the data set can be estimated from the minimum of the fuzzy hypervolume and maximum of partition density.
      
The cluster validity is proportional to the partition density and inversely proportionalto the fuzzy hypervolume.
      
更多          


Concept of fuzzy hypervolume niche is put forward for overcoming the localizations of Hutchinson's niche,in which the boundary of niche is distinct.From the niche theory based on fuzzy sets,the formulas of niche width and niche overlap are obtained and applied to the temporal niche of Osmia exca-vata Alfken and O.jacoti Cockerell in apple orchards as an example.It is more feasible to accept the competition coefficient α=0.708 6 than α=0.935 0.

Hutchinson生态位的边界是清晰的.为克服这个局限,利用模糊数学发展了生态位理论,提出了模糊超体积生态位概念以及关于生态位宽度和生态位重叠的度量公式,并在苹果园中凹唇壁蜂和紫壁蜂的时间生态位研究中应用.种间竞争系数α=0.708 6,比已有研究文献中α=0.935 0更切实可行.表明作者的公式优于其他公式.

Based on fuzzy hypervolume niche,the relations of measurement between multi-and one-(dimensional) niche are studied and the formulas for making comparison with some other metric formulas are simplified.The results indicate that multi-dimensional niche overlap is usually bigger than the product of separate niche overlaps if resource dimensions are independent and the formulas are close to Simpson Index and Schoener Formula respectively.All these improve the application of the niche theory.

基于模糊超体积生态位,探索了多维生态位度量与一维生态位度量的联系,简化了模糊超体积生态位的度量公式,并与常用的生态位度量公式作了比较.结果表明:当物种利用的各个资源类型独立时,多维生态位重叠往往大于各维生态位重叠的乘积;模糊超体积生态位的度量公式分别与Simpson指数和Schoener公式的形式相近;有助于完善生态位理论的应用.

Based on the theory of fuzzy hypervolume niche,8 species' niches of Chimonanthus praecox community in northwestern Hunan province are studied according to the basic data of the samplings.The results indicate as following:niche width of these species can be ordered as Chimonanthus praecox(0.847 9),Lindera communis(0.583 3),Alangium chinensis(0.576 1),Pistacia chinensis(0.500 0),Pittosporum truncatum(0.450 0),Adina racemosa(0.420 5),Celtis ullunae(0.313 5),and Prunus pseudocerasus(0.305 6),which are analogous...

Based on the theory of fuzzy hypervolume niche,8 species' niches of Chimonanthus praecox community in northwestern Hunan province are studied according to the basic data of the samplings.The results indicate as following:niche width of these species can be ordered as Chimonanthus praecox(0.847 9),Lindera communis(0.583 3),Alangium chinensis(0.576 1),Pistacia chinensis(0.500 0),Pittosporum truncatum(0.450 0),Adina racemosa(0.420 5),Celtis ullunae(0.313 5),and Prunus pseudocerasus(0.305 6),which are analogous to the results of Simpson index and Shannow-Wiener formula;Niche overlaps of Chimonanthus praecox's niche overlapping any other species' niches are large in the mass which show Chimonanthus praecox intense competing for resources with any other species because of the minimum 0.838 2;Niche overlaps of any other species overlapping Chimonanthus praecox are small in the mass which show any other species not intense competing for resources with Chimonanthus praecox because of the maximum 0.627 8.Therefore Chimonanthus praecox is the dominant species of Chimonanthus praecox community in northwestern Hunan province.

模糊超体积生态位理论的基础上,根据样地调查所获得的基本数据,研究了湘西北蜡梅群落中8个物种的生态位.结果表明,生态位宽度从大到小依次为:蜡梅(0.847 9)、香叶树(0.583 3)、八角枫(0.576 1)、黄连木(0.500 0)、崖花海桐(0.450 0)、鸡仔木(0.420 5)、珊瑚朴(0.313 5)和樱桃(0.305 6),与Simpson指数和Shannow-Wiener公式的结论相同;蜡梅生态位在其他物种的生态位的重叠值都很大,最小的为0.838 2,说明其他物种对资源利用受到蜡梅的激烈竞争;其他物种生态位在蜡梅生态位的重叠值都比较小,最大的为0.627 8,说明蜡梅对资源利用受到其他物种的竞争并不十分激烈,因而蜡梅是湘西北蜡梅群落中的优势物种.

 
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