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对生态系统及生物多样性等理论问题的探讨(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2003年05期
Page:
30-34
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Discussion on the Theroy of Ecosystem and Biodiversity
Article ID:
1000-2006(2003)05-0030-05
Author(s):
CHEN Meng
College of Forest Resources and Environment Nanjing Forestry University,Nanjing 210037,China
Keywords:
EcosystemBiodiversityDispatched structureSelf-organizingEntropy
Classification number :
Q146
DOI:
10.3969/j.jssn.1000-2006.2003.05.007
Document Code:
A
Abstract:
Based on the brief description of the feature and characterizations of ecosystem,this work mainly concludes the ecosystem as a typical selforganized structure system,with nonequilibrium and dissipated/dispatched features.The work explained the concepts of ordered,disordered and chaos status of ecosystems and distinguishes the differences among related gradual change,mutation and forking in evolution of the system.The paper elaborates the features of selforganizing and procedure of emergence of new species and introduces entropy as a trait to assess/evaluate the biodiversities in the system:biodiversity becomes complicated and abundance as the value of entropy increases,vice versa,biodiversity becomes simple and few as the value of entropy decreases.This paper also approaches the relations between biodiversities and stabilities of ecosystem and concludes that there is no natural link between biodiversity and stability in the ecosystem.

References

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Last Update: 1900-01-01