关键词: 驼鹿, 马鹿, 狍, 种间关系, 生态位重叠

Abstract: The food-habits，foraging heights and habitats of moose，red deer and roe deer were investigated jn winter from 1987 to 1989 on Shengshan forestry farm ，Heihe city．The staple foods of moose were Salix spp. Corylus spp, Pinus koraiensis and betula spp.(22.4%,16.0%,14.3%,13.8% in its diets respectively)．Those of red deer and roe deer were Populus spp, Betula spp．Pinus koraiensis (36.0% ，22.7% ， 17.3% ) and Betula spp．Salix spp.Populus spp．(28.6% ，19.0% ，12.7% )respectively．
Statistically，the foraging heights of three species were normally distributed with the means (standard deviations)of 137.4(39.0) cm (moose)，136.2(37.0)cm (red deer) and84 .2(29.2)cm (roe deer)．Mose and red deer mostly use korean pine forest，and
roe deer mainly use marsh and korean pine forest．
Moose and roe deer in food niche and habitat niche dim ension，moose and red deer in foraging height niche dimension are the greatest overlap．These species were arranged in order of overlap in three niche dimension of food，foraging height and habitat an follows：moose and red deer > mooso and roe deer > red deer and roe deer．

Key words: moose, red deer, roe deer, interspecific relationship, niche overlap