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nutritional niche
相关语句
  营养生态位
     Nutritional Niche of Prorocentrum Donghaiense on N,P,Fe,Mn
     东海原甲藻的N、P、Fe、Mn营养生态位研究
短句来源
     The results from nutritional niche study showed that the lower N optimum concentration limit for the growth of P. donghaiense was 7.962 mg/L, the lower suboptimum concentration limit was 0.115 mg/L.
     营养生态位实验结果表明,东海原甲藻对氮营养的最适浓度下限为7.962 mg/L,亚适浓度下限为0.115 mg/L,当氮营养浓度达到10 mg/L以上直至1000 mg/L时,东海原甲藻的特定比生长率一直维持在最适水平。
短句来源
     Understanding an animal's nutritional niche is fundamental to a full appreciation of its ecology, and is important for both pest control and species conservation purposes.
     理解动物的营养生态位是充分理解其整个生态学的基础 ,对于害兽控制和物种保护也很重要。
短句来源
  相似匹配句对
     Niche
     生态位
短句来源
     Nutritional Niche of Prorocentrum Donghaiense on N,P,Fe,Mn
     东海原甲藻的N、P、Fe、Mn营养生态位研究
短句来源
     Nutritional amblyopia
     营养性弱视
短句来源
     (4) niche;
     ( 4 )龛影 ;
短句来源
     Nutritional inquiry.
     营养查询等。
短句来源
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Understanding an animal's nutritional niche is fundamental to a full appreciation of its ecology, and is important for both pest control and species conservation purposes. Carnivores have digestive systems dominated by the small intestine, which can be related to the generally high digestibility of their food. Omnivores have more complex gastrointestinal tracts, with a hindgut caecum in which some microbial fermentation takes place, and they have longer mean retention times (MRTs) of digesta. The longest...

Understanding an animal's nutritional niche is fundamental to a full appreciation of its ecology, and is important for both pest control and species conservation purposes. Carnivores have digestive systems dominated by the small intestine, which can be related to the generally high digestibility of their food. Omnivores have more complex gastrointestinal tracts, with a hindgut caecum in which some microbial fermentation takes place, and they have longer mean retention times (MRTs) of digesta. The longest MRTs are found in herbivores, in which digesta are retained and fermented by dense microbial populations in one or more regions of relative stasis. However, not all herbivores have digestive systems that maximise fibre digestibility; only ruminants, camelids and very large hindgut fermenters (rhinos, elephants) achieve this. Instead, many other herbivores (foregut fermenters such as kangaroos and small hindgut fermenters such as rabbits, voles and possums) have digestive systems that sacrifice maximal fibre digestibility for a capacity to process large amounts of forage, even when forage fibre content becomes very high. These different digestive strategies result in the wide range of nutritional niches found among mammals.

理解动物的营养生态位是充分理解其整个生态学的基础 ,对于害兽控制和物种保护也很重要。食肉动物的小肠很发达 ,这可能与对食物的高消化能力有关 ;杂食性动物有更复杂的胃肠器官 ,其后端有可进行发酵的盲肠 ,消化物的平均滞留时间 (meanretentiontimes ,MRTs)更长 ;最长的平均滞留时间见于食草动物 ,其消化道内高密度的微生物种群对不同滞留区内的消化物进行发酵。但是 ,并不是所有的食草动物都能够最大程度地消化植物纤维 ,只有反刍动物、骆驼和个体较大的后肠发酵动物 (hindgutfermenter)能够具有这种能力。对比而言 ,许多其它的食草动物 ,如前肠发酵的有袋类和小型的后肠发酵动物如兔子、田鼠和负鼠等 ,它们具备可以使植物纤维消化效率最大的消化系统 ,可以在食物中的纤维素含量非常高的情况下仍能处理大量的食物。这些不同的消化策略使哺乳动物具有广幅的营养生态位

This paper dealt with the niche breadth and overlap of the four dominating termite species: Coptotermes formosanus Shiraki, Reticulitermes flaviceps Oshima, Macrotermes barneyi Light and Odontotermes formosanus Shiraki in Changde city. 6 kinds of mathematical formulas are discussed for the termite research. The results showed that Coptotermes formosanus Shiraki has the biggest space and nutritional niches, and Macrotermes barneyi Light has the smallest space and nutritional niches among the...

This paper dealt with the niche breadth and overlap of the four dominating termite species: Coptotermes formosanus Shiraki, Reticulitermes flaviceps Oshima, Macrotermes barneyi Light and Odontotermes formosanus Shiraki in Changde city. 6 kinds of mathematical formulas are discussed for the termite research. The results showed that Coptotermes formosanus Shiraki has the biggest space and nutritional niches, and Macrotermes barneyi Light has the smallest space and nutritional niches among the four termite species, otherwise there are low nutritional niche overlaps among them, only Odontotermes formosanus has some space niche overlap with Reticulitermes flaviceps and Macrotermes barneyi.

研究分析了台湾乳白蚁CoptotermesformosanusShiraki、黄肢散白蚁ReticulitermesflavicepsOshima、黄翅大白蚁MacrotermesbarneyiLight和黑翅土白蚁OdontotermesformosanusShiraki的空间和营养生态位宽度与重叠度,并分析了多个生态位宽度和重叠度测算公式用于白蚁研究领域的适宜性.结果表明台湾乳白蚁的空间生态位和营养生态位宽度最大,黄翅大白蚁对生存环境的要求最苛刻.而它们之间营养生态位的重叠度不大,仅黑翅土白蚁与黄肢散白蚁、黄翅大白蚁在空间分布上具有较大的重叠度.

Based on the data of long-term field surveys and various literature records,the ecofaunas of Acridoidea in the following seven vegetational zones(or subzones)of Inner Mongolia region of China were expounded:Bright coniferous forest zone of cold-temperate type(F1),Deciduous broad-leaf forest zone of mid-temperate type(F2),Forest steppe zone(FS),Typical steppe zone(TS),Desert steppe zone(DS),Steppe desert subzone of warm-temperate type(SD)and Typical desert subzone of warm-temperate type(TD).The zonal characteristics...

Based on the data of long-term field surveys and various literature records,the ecofaunas of Acridoidea in the following seven vegetational zones(or subzones)of Inner Mongolia region of China were expounded:Bright coniferous forest zone of cold-temperate type(F1),Deciduous broad-leaf forest zone of mid-temperate type(F2),Forest steppe zone(FS),Typical steppe zone(TS),Desert steppe zone(DS),Steppe desert subzone of warm-temperate type(SD)and Typical desert subzone of warm-temperate type(TD).The zonal characteristics of specific compositions of Acridoidea fauna,the ecological conditions(vegetation,climate and soil etc.)in each zone,and the ecological mechanisms in formation of these different specific compositions were analyzed.The species diversities of acridoids and the zonal diversification of faunal geographic elements in different zones,and their relationships with different vegetation in each zone were also summarized and compared.The results indicated that the TS sustained the highest species diversity of acridoids since it could supply acridoids with sufficient temporal,spatial and trophic niches.In food selection acridoids favor mostly plants of Gramineae and Compositae,and both the “perennating rosette grass" and “root stock grass" were just right the dominant components of plant communities in the TS,and then the acridoids in this zone could get the most diverse temporal,spatial and nutritional niches with rich foods,diverse habitats,abundant sunshine and suitable soil for egg laying.In contrast,the two vegetational zones of F1 and TD in Inner Mongolia Region all possessed relatively lower species diversity and quite different compositions of acridoids.And this may be caused by the extreme climatic conditions(lower temperature with high humidity in F1 and high temperature with lower humidity in TD)that restricted the occurrence and distribution of acridoids in both zones.It is inferred that the modern status of the acridoid ecofaunas in Inner Mongolia Region is the combined result of both natural selective stress to acridoids and their adaptive evolution in the long course of natural history.

为了阐明内蒙古地区不同景观植被地带蝗总科生态区系(Acridoidea ecofaunas)的生态地理学特征,本文依据长期野外考察和文献积累数据,分别对寒温型明亮针叶林带(F1)、中温型夏绿阔叶林带(F2)、森林草原带(FS)、典型草原带(TS)、荒漠草原带(DS)、暖温型草原化荒漠亚带(SD)和典型荒漠亚带(TD)等7个不同类型植被地带(或亚带)内蝗总科区系结构组成、生态生存条件(植被、气候、土壤等)及其区系形成的生态学机理进行了分析,综合比较了各植被地带(或亚带)的蝗虫物种多样性、区系地理成分的区域性分异及其与地带间不同植被的相关性。结论指出,由于多数蝗种具有以禾本科(Gramineae)和菊科(Compositae)植物为主要食料的食性特征,而典型草原带的植被群落恰以"多年生丛生禾草及根茎禾草"为建群优势层片,其形成的丰富食物资源、多样的栖息场所、充足的日光辐射和较长的生长期以及有利于产卵孵化的土壤条件等,为蝗虫提供了最为多样的时间、空间和营养生态位(niches),故蝗虫长期受自然选择的压力,在适应协同进化的历史过程中,形成了它们在典型草原带内具有最高的物种多样性。相比之下,在具有极端生态生存条件的内...

为了阐明内蒙古地区不同景观植被地带蝗总科生态区系(Acridoidea ecofaunas)的生态地理学特征,本文依据长期野外考察和文献积累数据,分别对寒温型明亮针叶林带(F1)、中温型夏绿阔叶林带(F2)、森林草原带(FS)、典型草原带(TS)、荒漠草原带(DS)、暖温型草原化荒漠亚带(SD)和典型荒漠亚带(TD)等7个不同类型植被地带(或亚带)内蝗总科区系结构组成、生态生存条件(植被、气候、土壤等)及其区系形成的生态学机理进行了分析,综合比较了各植被地带(或亚带)的蝗虫物种多样性、区系地理成分的区域性分异及其与地带间不同植被的相关性。结论指出,由于多数蝗种具有以禾本科(Gramineae)和菊科(Compositae)植物为主要食料的食性特征,而典型草原带的植被群落恰以"多年生丛生禾草及根茎禾草"为建群优势层片,其形成的丰富食物资源、多样的栖息场所、充足的日光辐射和较长的生长期以及有利于产卵孵化的土壤条件等,为蝗虫提供了最为多样的时间、空间和营养生态位(niches),故蝗虫长期受自然选择的压力,在适应协同进化的历史过程中,形成了它们在典型草原带内具有最高的物种多样性。相比之下,在具有极端生态生存条件的内蒙古东部针叶林带和西部典型荒漠亚带内,分别因其低温高湿和高温低湿的两类不同极端气候特征的生态作用,形成了蝗虫在这两个植被地带内生存分布的生态阻限,故其拥有的物种多样性水平最低,其区系结构的组成种类也截然不同。

 
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