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ecological niche     
相关语句
  生态位
     (3)Studies on vertical distribution and ecological niche of main mulberry pests.
     (3)桑树主要害虫的垂直分布规律及生态位的研究
短句来源
     Study on Ecological Niche of Epimedium brevicornu in Jinchengshan National Forest Park
     金城山国家森林公园淫羊藿生态位研究
短句来源
     Section two is chapter 3. Through analyzing the evolution of enterprise cluster, find the relations between enterprise's different ecological niche and enterprise's competitive advantage.
     第二部分是第三章,以企业集群的演进为切入点,对中卫型与网络型两种不同结构类型的企业集群进行分析,得出在集群演进的不同阶段企业生态位的改变与企业竞争优势的获取。
短句来源
     By analyzing the characteristics of the combined and scattered tourism resources, this paper explains the connotative and denotative meaning of tourism resources concentrative region and discusses the position and function of the region in regional tourism planning based on niche theory and then stud- ies the ecological niche of the region with Zhejiang province as an example.
     旅游资源单体的结合与分散直接决定着区域旅游规划的定位。 本文剖析旅游资源实体聚合与分散的特征,诠释了旅游资源集合区的内涵与外延,运用生态位理论探讨了旅游资源集合区在区域旅游规划中的地位和作用,并以浙江省为例对区域旅游规划中旅游资源集合区的生态位进行了研究,以期为区域旅游规划中对旅游资源的多角度认识提供参考。
短句来源
     Ecological Niche Theory and Its Application in Eco-Economic Planning
     生态位理论及其在生态经济规划中的应用
短句来源
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  小生境
     In the respect of lac insect's overwinter,western Guangxi has some superiority compareing to southeast Guangxi. 1)Borders on Yunnan,there are complex ecological niche and microclimate; 2)Deviabes from major way of cold wave;
     在胶虫越冬保种方面,与桂东南相比,桂西具有与云南相毗邻的区位优势,境内小生境、小气候复杂多样,又偏离寒潮主径路,寄主树资源丰富,群众基础较好,并发潜力大。
短句来源
     This paper reports the relations between the chinese Alligator's reproductive capacity and climate of ecological niche in the condition of artificial breeding.
     本文报道了扬子鳄的生殖能力与其在人工饲养下小生境气候之间的关系。
短句来源
  “ecological niche”译为未确定词的双语例句
     ecological niche amenity of Tongchan、Yulin、Weinan belonged to the inferiority type,and the synthetic value was between 0.295 and 0.427.
     铜川、榆林、渭南的总生态活度位为贫乏型,其综合值界于0.295~0.427。
短句来源
     The results indicated that ecological niche amenity of Baoji、Xianyang、Hanzhong belonged to the superiority type,and the synthetic value was between 0.774 and 0.847;
     评价结果表明:宝鸡、咸阳、汉中的总生态活度位为优越型,其综合值界于0.774~0.847之间;
短句来源
     ecological niche amenity of Xi'an、Ankang、Shangluo、Yan'an belonged to the transition type,and the synthetic value was between 0.497 and 0.706;
     西安、安康、商洛、延安的总生态活度位为过渡型,其综合值界于0.497~0.706;
短句来源
     The second part defines several important concepts such as the enterprise community, the ecological niche, the symbiosis from the ecological angle, which lays the foundation on the following research.
     通过对社会文化环境在企业ii群落成长过程的作用分析,认为社会文化因子对企业群落的创新能力、企业群落产品的交易费用的节约和新企业的衍生等方面存在着重要的影响。
短句来源
     Assessment and Analysis on Ecological Niche Amenity of the Main Cities in Shaanxi Province
     陕西省主要城市生态活度位评价与差异分析
短句来源
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  ecological niche
Comparison of these odour profiles with those of two other tenebrionids sharing the same ecological niche,Gonopus agrestis andHerpiscius sp.
      
The following definition is proposed: a virus species is a polythetic class of viruses constituting a replicating lineage and occupying a particular ecological niche.
      
Maternal or paternal inheritance of wax characters in Rosa, section Caninae may allow for ecological niche differentiation according to the parental evolutionary constraints.
      
When rapid expansion of a species occurs it is likely to be connected with occupation of a new ecological niche.
      
sinuata, which are occupying a more heterogenous ecological niche.
      
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This paper tries to use Beecher's"edge effect" to explain the principle ofdesertification process. In the ecotone of the two or more biogeocoensis, the structure usuallyis complex,different habitats species symbiosis appears;the variation of popu-lation density is bigger some species are very active, the productivity is cor-respondingly higher. This phenomena is called "edge effect". In 1985, Wang rusong and Ma shijun extended the definition of "edgeeffect": In interaction place of two or more different qualitative...

This paper tries to use Beecher's"edge effect" to explain the principle ofdesertification process. In the ecotone of the two or more biogeocoensis, the structure usuallyis complex,different habitats species symbiosis appears;the variation of popu-lation density is bigger some species are very active, the productivity is cor-respondingly higher. This phenomena is called "edge effect". In 1985, Wang rusong and Ma shijun extended the definition of "edgeeffect": In interaction place of two or more different qualitative ecosystems(or other systems), because of some ecological facters (perhaprs material,energy, infomation, apportunity or difference of property,and cooperationcause the bigger variation or some compesitions, behavious (e.g populationdensisty, productivity, dioersity etc, ) .This is called"edge effect". This paper illustrates the edge effect of desertificatiou from 4 aspects:1. Ecotone structure is complex and characteristics is obviously. 2.Edge effect began and ended from intense competition to harmonic symbsis.Desertic ecosystem do is a continous competition edge ecological niche qro-cess. 3. The productivity of ecotone is relativety higher. 4. Stability ofthe edge effect.the paper points out: According to the quality of the edge effect ourcountry's land which is influenced by desertification can be classified 3tyqes: they are agriculture animal husbandry ecotone, desert_oasis ecotone,desert steppe_steppe desert ecotone. This paper separately illustrats edge effect of these three edge qualitiesdesertification. It Also points out: Desertification process ingeniously uses the variousdifferent systems (series) effect each other, for instance geologicalhistorical ice age and interglacial alternation, cold and dry alternation,geomorphological type disjunctive area, bioclimatic transitional zone, Land productive type etc.Making the difference of the material, eher?rdistrict cause complex enviromental change. It appears desertifical landscaqe. So the entire explaining for desertifical dynamic dynamic principle ismade. In a word these edge factors which influance the edge effect comqletelfcan be controlad by artificial intelligance. The edge effect is a natural regu-lar pattern. The most important to conquer the desert is: in the ecosystemthe human beings not only deqend on the opposition of engneering techni-que ability with natural forces, but also should resqect the natural law andapply the new subject and new theory. Pointing out: how to recognige anduse the quality and method of edge effect will have broad prospects in theinvestigation of geographical basis theory.

本文从分析边缘效应的特点入手,依据比彻(Beecher)边缘效应的理论,来解释沙漠化过程发生的机理,从而更好地人为控制沙漠化的发生过程。

Five species of Stethorus in Sichuan province were found and their distribution was investigated. The dominant ones are Stethorus chengi Sasaji, S. punctillum Weise and S. yunnanensis Pang et Mao. They over- winter mainly in adult stage in curved citrus leaves and in litters on the ground. The Stethorus spp. changed their habitat plants in a year or changed the pick time of their prey on different plants. In citrus orchard, the spatial ecological niches of Stethorus spp. greatly overlap that of their prey...

Five species of Stethorus in Sichuan province were found and their distribution was investigated. The dominant ones are Stethorus chengi Sasaji, S. punctillum Weise and S. yunnanensis Pang et Mao. They over- winter mainly in adult stage in curved citrus leaves and in litters on the ground. The Stethorus spp. changed their habitat plants in a year or changed the pick time of their prey on different plants. In citrus orchard, the spatial ecological niches of Stethorus spp. greatly overlap that of their prey (Panonychus citri Mcgregor), the overlap of time niches, however, was much smaller.

本文报道了5种食螨瓢虫在四川的分布。其中,束管食螨瓢虫、深点食螨瓢虫、云南食螨瓢虫为优势种。食螨瓢虫以成虫在树上卷叶及地表枯枝落叶内越冬,随着不同寄主植物上叶螨高峰期不同,食螨瓢虫存在栖息作物转移现象。在桔园内,食螨瓢虫与桔全爪螨的空间生态位重叠大,而时间生态位重叠小。

Notable benefit of cconomy,ecology and society may be achieved by developing the production of lac in the karst area of western Guangxi provinces. In the respect of lac insect's overwinter,western Guangxi has some superiority compareing to southeast Guangxi. 1)Borders on Yunnan,there are complex ecological niche and microclimate; 2)Deviabes from major way of cold wave;3)Rich in plants; 4)There are fairy good basis of the masses to develop the production of lac in western Guangxi.Therefore,to tranfer the...

Notable benefit of cconomy,ecology and society may be achieved by developing the production of lac in the karst area of western Guangxi provinces. In the respect of lac insect's overwinter,western Guangxi has some superiority compareing to southeast Guangxi. 1)Borders on Yunnan,there are complex ecological niche and microclimate; 2)Deviabes from major way of cold wave;3)Rich in plants; 4)There are fairy good basis of the masses to develop the production of lac in western Guangxi.Therefore,to tranfer the focal point of developing lac from eastern area to western area will have great significance for karst region to get rid off poverty and become rich and promote Guangxi economy as well.

在桂西石山地区发展紫胶生产,经济、生态、社会三大效益显著。在胶虫越冬保种方面,与桂东南相比,桂西具有与云南相毗邻的区位优势,境内小生境、小气候复杂多样,又偏离寒潮主径路,寄主树资源丰富,群众基础较好,并发潜力大。为此,将我区紫胶生产的重点由东向西作战略转移对于名山地区脱贫致富及振兴整个广西的经济都其有十分重要的意义。

 
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