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生态学杂志 ›› 1990, Vol. ›› Issue (4): 53-56.

• 专论与综述 • 上一篇    下一篇

沙坡头人工植被变化的动态平衡

孙宏义   

  1. 中国科学院兰州沙漠研究
  • 收稿日期:1988-12-14 修回日期:1989-07-14 出版日期:1990-08-10

Dynamic Equilibrium in the Alternation of Artificial Vegetations in Shapotou Area

Sun Hongyi   

  1. Institute of Desert Research, Academia Sinica, Lanzhou
  • Received:1988-12-14 Revised:1989-07-14 Online:1990-08-10

关键词: 水稻, 紫外线B辐射, 遗传分析, 生化特性

Abstract: This paper applies the Markov process to the studies of artificial vegetation dynamics inShapotou area.The results show that the present state of artificial vegetations in Shapotouarea is not a stable one,but an embryo stage for future vegetational changes.The futurechanges of artificial vegetations are predicted to be the “fluctuations”,which will last about100 years.The spectral system analysis indicate a close similarity for shrub and semi-shrub,which have the same pre-and post-colonization grassland state.Entropy analysis indicatethat grassland factor is the most indefinitive.

Key words: Oryza sativa, UV-B radiation, Genetic analysis, Biochemical characteristics