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cje ›› 1997, Vol. ›› Issue (3): 71-75.

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The Models of Suitability Degree of Grassland Organism and their Application

Li Zhenqing1, Ren Jizhou2   

  1. 1. Institute of Botany, Academia Sinica, Beijing 100093;
    2. Gansu Grassland Ecolcgical Research Institute, Lanzhou 730070
  • Received:1996-01-20 Revised:1997-03-11 Online:1997-06-10

Abstract: Based on the theories of suitability and rangeland type,the models for suitability degree of grassland organism have been built up,using index of rangeland moist degree for a measure of integrative ecological factor.The index of estimating habitat suitability for grassland organism was given.Some new concepts,incuding grassland habitat index,habitat suitability degree,process of habitat suitability degree were put forward.

Key words: zooplankton, niche,  , competition, prey-predator, canonical correspondence analysis (CCA), Sanmen Bay.