A completely isolated “green island” has been in Xinglong Mountain for about 300 years.The population densities of alpine musk deer in the forest were high and relatively stable among 30～50 individuals/km\+2 in 1993～1997.Under present conditions,the population size was stabilized basically 5000 individuals or so,and faced with the threats such as diseases,undernutrition and poaching.Therefore,great effort should be made in order to set up an exploitation model through conservation and a conservation model ...