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栖息地毁坏
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  habitat destruction
     Under continuous and partial destruction, the higher velocity the habitat destruction, the greater amplitude the species diversity had, which was not beneficial to the stabilization of community.
     对于栖息地持续部分毁坏,栖息地毁坏速度只影响物种多样性振荡的幅度,而不影响其变化的最终结果,并且速度越快,物种多样性振荡幅度越大,越不利于群落的稳定。
短句来源
     Spatial simulation of the responses of species extinction to human-caused habitat destruction at different time scales
     物种灭绝对不同时间尺度栖息地毁坏响应的空间模拟
短句来源
     Study on the Relations Between the Animal Species Extinction and Habitat Destruction
     栖息地毁坏与动物物种灭绝关系的模拟研究
短句来源
     Species diversity under effects of temporal heterogeneity of habitat destruction
     物种多样性对栖息地毁坏时间异质性的响应
短句来源
     Habitat destruction is one of the main factors inducing the decrease of species diversity.
     栖息地毁坏是物种多样性丧失最重要的因素之一。
短句来源
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  “栖息地毁坏”译为未确定词的双语例句
     At hundred-year time scale,the species evolutionary curves would not oscillate.
     在大时间尺度的栖息地毁坏情况下,q越大,则物种灭绝起始时间和所有物种灭绝的时间越长;
短句来源
     At larger scale,the extinction time would increase with q,while the extinction time of species would become much shorter with q increased in the case of a smaller scale.
     而在较小的时间尺度的栖息地毁坏情况下,q越大,灭绝起始时间和所有物种最终灭绝的时间则越短。
短句来源
     (2)With the level of habitat degradation increased, the negative influence on superior competitors become smaller, while bigger on inferior ones.
     (2)随着栖息地毁坏程度的增加,对优势物种的负面影响逐渐减小,而对弱势物种的负面影响逐渐增加;
短句来源
  相似匹配句对
     Species diversity under effects of temporal heterogeneity of habitat destruction
     物种多样性对栖息地毁坏时间异质性的响应
短句来源
     Study on the Relations Between the Animal Species Extinction and Habitat Destruction
     栖息地毁坏与动物物种灭绝关系的模拟研究
短句来源
     A Research on Gazelle Habitat
     黄羊栖息地的研究
短句来源
     Studies on Rodent Control Methods in It's Habitat
     栖息地灭鼠研究
短句来源
     CORROSION DAMAGE AND REINFORCE REMOULD OF UNDERGROUND STOVEPIPE
     地下烟道的腐蚀毁坏和加固改造
短句来源
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  habitat destruction
Habitat destruction in tropical forests often produces fragmented landscapes where relatively small forest remnants are present in a human-dominated matrix.
      
The future of marine turtles in the area is threatened by habitat destruction (development of beachfront habitat for the tourist industry), slaughter of adults, and poaching of nests.
      
Habitat destruction and fragmentation are ongoing and likely to accelerate.
      
Alterations in the prey base, commercial exploitation, and habitat destruction are likely responsible for declines in Epicrates populations, whereas predation by mongooses, cats, and rats have taken their toll on species of Alsophis and Liophis.
      
Species are threatened mostly because they have small distributions and habitat destruction is continuing.
      
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Loss of habitat due to human activities is a major threat to biological diversity. Recently, dynamics models have been used to study the influence of habitat destructions. Using the multi-species co-existence model, we simulated the dynamics of community species evolution under different assumptions in this article. The results include the following: (1) The destruction of habitat will lead to the extinction of animal species. The latter depends on the assumptions of species mortality rates and equilibrium abundance....

Loss of habitat due to human activities is a major threat to biological diversity. Recently, dynamics models have been used to study the influence of habitat destructions. Using the multi-species co-existence model, we simulated the dynamics of community species evolution under different assumptions in this article. The results include the following: (1) The destruction of habitat will lead to the extinction of animal species. The latter depends on the assumptions of species mortality rates and equilibrium abundance. Even if the destruction of habitat is the same, with different assumptions, the animal species in a community that are driven to extinction can be those that have either strong competitive abilities or relative weak competitive abilities. Species evolution theory took it for granted that species with weak competitive abilities would die out because of the destruction of habitat. And Tilman considered that the extinct species must be those with strong competitive abilities according to the model. But our results are different from the traditional species evolution theory or the theory argued by Tilman. (2)Generally, weak species have high mean mortality rates. Under this assumption, when the habitat is destroyed, a higher number of strong species are made extinct in the community. The extinction time of species will also be much shorter. (3)On the assumptions of the same mortality but different species abundance on the unspoiled habitat, more equilibrium abundance is in favour of species existence in the community.

利用多个物种共存模式模拟了不同情况下的不同动物种群演化的动力学特性 ,研究结果表明 :( 1 )由于栖息地的毁坏所导致的动物物种灭绝是依赖于对物种死亡率和有关平衡态的假设的。不同的假设下 ,即使栖息地的破坏率相同 ,灭绝的物种可能是竞争能力最强的若干物种 ,也可能是竞争能力相对较弱的若干物种。既不象传统的物种进化理论所认为的必是弱的物种先灭绝 ,也不象 Tilman等人所认为的一定是最强的若干物种先灭绝 ;( 2 )如果弱的物种具有较高的平均死亡率 ,则当栖息地受到一定的毁坏时 ,将有较多强的物种灭绝 ,而且物种灭绝时间将大大缩短 ;( 3)在物种死亡率不变的情形下 ,物种在未受毁坏栖息地上的平衡态的大占有率 p0i,将有利于物种的生存。

Loss of habitat due to human activities is a major threat to biological diversit y, and habitat destruction may be the major reason of species extinctions. Two p oints of interest and important questions are who will be the first to become e xtinct in matepopulation communities when the habitat is destroyed, the inferior competitors or the superior competitors? what effects will be exerted on the di fferent species by increasing the habitat? They are especially important today w hen environmental protection,...

Loss of habitat due to human activities is a major threat to biological diversit y, and habitat destruction may be the major reason of species extinctions. Two p oints of interest and important questions are who will be the first to become e xtinct in matepopulation communities when the habitat is destroyed, the inferior competitors or the superior competitors? what effects will be exerted on the di fferent species by increasing the habitat? They are especially important today w hen environmental protection, restoration of ecological balance are greatly advo cated. Here we describe a model (Tilman et al., 1994) that explains multispe cies coexistence in patch habitats and which predicts that their abundance may b e fleeting. By considerable numerical simulations, we have the following result under the condition of best competitors with most abundant, equal mortality: the restoration of environment will lead to the rearrangement of species order, fro m the natural number arrangement to odd-even order arrangement, while the stron g est species will enlarge its habitat. When environment is destroyed, the origina lly strong will become the weakest one. If the percentage of destruction is grea ter than the occupancy rate of the strongest species, not only the strongest spe cies, but the second, the third,…,species will die out. At the same time, the natural order of species evolution will change to another law: the even number s pecies is superior to the odd number species.

通过大量的数值模拟发现 :生境恢复或扩展将导致集合种群的强弱序由自然数的顺序规律演变为奇数种群强 -偶数种群弱 ,同时集合种群里的最优秀种群将迅速扩张、发展为更为强大的最优势种。而当生境遭受到破坏 (毁坏 ) ,集合种群里的最优秀种群将迅速地伦为最弱者。如果栖息地的毁坏率大于集合种群优势种对栖息地的占有率 ,不仅集合种群里的优势种群将不可避免地灭绝 ,伴随最优秀种群走向灭绝的种群依次还有第二、第三、第四强等的种群。同时 ,将导致集合种群的强弱序由自然数的顺序规律演变为偶数种群强 -奇数种群弱。

Loss of habitat due to human activities is a major threat to biological diversity, and habitat destruction may be the major reason of species extinctions. The fragmentation of natural habitat is the primary cause of current species extinction crisis. The predictions are made by an extension of metapopulation models to multispecies competition. Two points of interest and important questions are: what effects will be exerted on the best competitor of metapopulation by a light habitat destruction? What effects...

Loss of habitat due to human activities is a major threat to biological diversity, and habitat destruction may be the major reason of species extinctions. The fragmentation of natural habitat is the primary cause of current species extinction crisis. The predictions are made by an extension of metapopulation models to multispecies competition. Two points of interest and important questions are: what effects will be exerted on the best competitor of metapopulation by a light habitat destruction? What effects will be exerted on the inferior competitors by the superior competitors when the habitat is destructed ? By mathematic analysis, we discover the relation between the number of extinct species and the habitat destruction ratio under the critical restriction condition. The considerable numerical simulations show the following results under the condition of best competitors with most abundant, equal mortality: (1) both coordinate evolution and coordinate degeneration are existed in metapopulation when habitat destruct lightly; (2) if the best competitor is not strong enough,it will degenerate as a poor one while species n2 will evolve as the best competitor as the habitat is destructed lightly;(3) if the best competitor is very strong,it will be the internal cause which driving the poor competitors extinct;(4) There exists two mechanisms of species extinction or metapopulation as habitat destruction, that is the best competitor goes extinct or the poor competitors go collective extinction. 

大量的数值模拟研究表明:(1)集合种群里最强物种种群对栖息地占有率相对较少时,较小的栖息地毁坏率就可以导致该最强物种种群与其它奇数物种种群一起退化;(2)而最强物种种群对栖息地占有率相对较多则是导致集合种群里弱物种种群集体灭绝的内因;(3)当栖息地的毁坏率大于最强物种种群对栖息地的占有率时,最强物种种群将先灭绝而使得弱物种种群进化为强物种种群或新的更强的强物种种群。

 
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