本研究分析了长白山高山冻原植被-凋落物-土壤生态系统的碳储量和碳动态.冻原植被中年净储存有机碳约17251 t;凋落物中有机碳储量为15043.1 t,凋落物中有机碳储量空间分布格局:TA＞LA＞MA＞SA＞FA;冻原土壤(0～20 cm)中年均储存有机碳为1054 t·a-1,土壤中有机碳储量为3.16×105 t;每年约有1.4×104 t·a-1土壤有机碳通过土壤呼吸释放到大气圈.植被-凋落物-土壤系统共储存碳452624 t.长白山高山冻原年均固碳为3146 t·a-1.“,”This paper examined the carbon storage and flux of vegetation-litter-soil in alpine tundra ecosystems in Changbai Mountains. Approximately 17251 t·a-1 of carbon was yearly stored in the vegetation and 15043.1 t·a-1of carbon flew into soil by litters. The vegetation-litter-soil ecosystem stored 452624 t·a-1 of carbon, which was the important CO2 sink. The net carbon storage was currently 3146 t·a-1 in vegetation-litter-soil ecosystem.