关键词: 驼鹿, 分布, 数量, 三阶抽样法

Abstract: Using the 3 orders sampling method，the authors selected 16 sampling sites and
replaced 202 sampling lines which were 2 476．6km in length，and 309 trail lines of moose(Alces alces)were counted in Da and Xiao Xinganling Mountains of Northeastern China,during the winter of 1985-1987．From these data，the geographical distribution and population size were determined as follows:the total area of moose habitat is about 1 90000km² ，the average density is 0．0519 individuals／km² and the population size is 9 955+397 individuals． In the meantime，annual descending rate was 6．3 %． Now the moose population in China is greatly need to protect．Lastly,the reasons of causing the moose population to reduce，as well advantage and shortcoming of the investigation method were discussed.

Key words: Moose, Population size, Distribution