This paper was focused on typical aneurolepidium chinense community and puccinellia tenuiflora community in songnen grassland and the research work about energy flow of decomposer subsystem of aneurolepidium chinense grassland was completed through field and laboratory experiments during the period from 2000 to 2001 本论文以东北羊草草地典型羊草群落和碱茅群落为研究对象,通过2000 - 2001两年的野外测定和室内分析,完成了羊草草地分解者亚系统能量流动的研究工作。