关键词: 黑熊, 数量, 分布, 保护

Abstract: We carried out detailed investigation on the number and distribution of the black beart 1991-1993 in Hanzhong prefecture,Shaanxi province.The results showed that
it is distributed over 10 counties 166 districts where forest grows well，and the population is very sparse,Relation between number of black bear and forest area is closely re1ated,its correlation coefficient is 0.8917．
The habitat of black bear is divided from landforms into three types,i.e.(1)High mountains of Qinling:forest area 5 576.26 km ,average altitude of more l 000 m ，there
are 212 bears and the density is 0.0389 indi./km ;(2)High mountains of Bashan:forest area 3 274.91 km ,average altitude of 1 500-2 000 m ,there are 65 bears and the density is 0.019 8 indi./km ;(3)Low mountains of Qinling and Bashan:forest area 5 944.02km ,average altitude of less 1 000 m ,there are 35 bears，and the density is 0.005 2 indi./km．
Extinction of bears from 50.35% of their historic range is occurred in Hanzhong prefecture,because of population growth rapidly in the range,the human economic activities influenced distribution range of black bear.The activities of human are severelv impacting black bear habitat.Major human actions influencing bear habitat include timber harvest and human occupancy and cultivation in the habitation of bear．Direct human impacts on bear include killing of bears for protection of crops，unregimented hunting．Particularly forest is severely destroyed,its area is reduced year by year．
The idea for recovery of bear resources and suggestion for future management and conservation are described in paper．

Key words: Black bear, Number, Distribution, Conservation