【摘要】 2007年11月、12月、2008年3月中旬至4月下旬、5月中旬至6月上旬、7月上旬至8月上旬、9月,在达赉湖地区收集了蒙原羚与同域分布家羊的粪便,利用粪样显微镜镜检分析方法研究了蒙原羚与同域分布家羊的食物重叠。在蒙原羚的粪便中共发现14科33属48种植物,与其同域分布家羊的粪便中共发现12科26属35种植物。禾本科植物构成了蒙原羚和家羊食物组成的主要部分,春季其占可识别植物碎片的比例最多,达(88.8±19.3)%,冬初最少,占(45.7±10.9)%。蒙原羚与同域分布家羊食物生态位重高度重叠,秋季最高达0.913,冬末最低为0.878,这表明蒙原羚与同域分布家羊存在激烈的食物竞争。更多还原

【Abstract】 Dietary overlap between sympatric Mongolian gazelle and sheep/goat in Dalaihu region was surveyed from November,2007 to September,2008.Feces of these sympatric animals were collected and vegetative species of their food in feces were identified under microscope.In feces of Mongolian gazelle,48 plant species,33 genera and 14 families were identified and feces of sympatric sheep/ goat,35 plant species,26 genera and 12 families were identified.Comparison of these plant species in the diet showed that Gramineae was the main part of the diet of Mongolian gazelle,comprising(88.8±19.3)%in Spring and(45.7±10.9)%in early winter, and the overlap of plant species was 0.878 in winter end and 0.913 in autumn,indicating that the sheep/goat were the potential competitors in food for Mongolian gazelle.更多还原