Biodiversity Science ›› 1999, Vol. 07 ›› Issue (3): 220-225.doi: 10.17520/biods.1999034

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Avian-mammalian species diversity in nine representative sites in China

JIANG Zhi-Gang, JI Li-Qiang   

  1. Institute of Zoology , Chinese Academy of Sciences , Beijing  100080
  • Received:1998-10-27 Revised:1999-03-04 Online:1999-08-20

Species check-lists of birds or mammals , normally accomplished after a general biological survey , are valuable for calculating the diversity index. We recommend a method that uses avian and mammalian species check-lists to assess the species diversity in an area. The first step is to compute the diversity indexes at the genus level ( G-index) and the family level ( F-index) , then to calculate the ratio of G-index and F-index as the G-F index . The G-index reflects the diversity at the genus level . The F-index has two components , i. e. the diversity within and the diversity among families. G-F index ranges between 0 and 1. (1) F-index , DF : For a particular family k :        DFk = - r n i = 1 piln pi (1) Where n = the number of genera in the family k , pi = ski / Sk , ski = the number of species in genus i , Sk = the total number of species in family k. For overall F-index :           DF = r m k = 1 DFk (2) Where m = the total number of families in the class (2) G-index , DG : DG = - r p j = 1 DGi = - r p j = 1 qjln qj (3) Where qj = sj / S , sj = the number of species in genus j , S = the total number of species in the class , p = the total number of genus in the class.(3) G-Findex : DG-F = 1 - DG DF (4) We calculated the G-F indexes for nine representative sites. They are the Dayaoshan Mountain Nature Reserve , the Funiushan Mountain Nature Reserve , the Fanjingshan Mountain Nature Reserve , the Qinghai Lake Nature Reserve , the Haibei Alpine Ecosystem Research Station , the Liangshui Nature Reserve , the BeijingTianjin region , the Baiyinxile Grassland Ecosystem Research Station , and the Parmir Plateau for a comparative species diversity study. Based on the biological census data , such as the species check-lists of birds and mammals , G-F index provides a rapid and efficient assessment of biodiversity , because the species check-lists are readily available. In the study areas , the F-index of birds was significantly higher than that of mammals , indicating higher species diversity in birds than that in mammals at the study sites. The avian and mammalian G-F indexes of the study sites were closely correlated.

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