Biodiversity Science ›› 1998, Vol. 06 ›› Issue (1): 1-5.doi: 10.17520/biods.1998001

• 论文 •     Next Article

The Blue Sheep population ecology and its conservation in Helan Mountain, China

WANG Xiao-Ming, LIU Zhi-Xiao, XU Hong-Fa, LI Ming, LI Yuan-Guang   

  1. Department of Biology ,East China Normal University , Shanghai  200062
  • Received:1996-05-17 Revised:1997-09-15 Online:1998-02-20

The authors observed Blue Sheep ( Pseudois nayaur) population in the Helan Mountain , Ningxia Province in November 1994 ,between J uly and Nevember 1995 ,respectively. It was found that the Blue Sheep preferred to elevation of 1800~2000 m in Helan Mountain. The Blue Sheep foraged primarily in the morning and at dusk. Of the 448 individuals observed ,the average herd size was 5. 5 individuals. The Blue Sheep were frequently seen in small herds of two to eight individuals (70. 8 %) . Of the 403 Blue Sheep classified by sex , the ration adult females to males was 1:1. 2 , and the ratio of adult females to young was 1 :0. 44 ,the population showed a trend of increase. Hunting , human disturbance and livestocks were major threat against Blue Sheep’s lives.

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