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《Acta Ecologica Sinica》 2002-04
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Study on the Relations Between the Animal Species Extinction and Habitat Destruction

LIN Zhen-Shan\+1,WANG Shu-Guang\+2 (1.The Department of Geography, Nanjing Normal University, Nanjing, 210097, China; 2.The Department of Atmospheric Sciences, Nanjing University, Nanjing 210093,China).  
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.
【Fund】: 国家重点基础研究发展规划资助项目 ( G1 9880 4 0 90 0 -1 )
【CateGory Index】: Q111.7
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