A microbial community named as N6 was selected out from a lignocelluloses material compost sample, and its function on degrading cellulose was studied. The results showed that the N6 culture had a stable pH range of 6.4 - 8.0, own high activity in degrading cellulose at temperature of 50 -60 ℃, with a highest cellulase (CMCase) activity of 0.83 IU/mL. Under 50 ℃, N6 could degrade above 90 % of filter paper within 4 d, degrade 75.0% of com straw powder and 86.4 % of rice straw powder within 6 d, 79.0 % of com straw powder and 90.4 % of rice straw power within 9 d, and also above 30 % of cassava residual. According to its high activity in degrading natural lignocelluloses, N6 would be a very good microbial community to be practically applied on the bio-converse of lignocelluloses materials.%从木质纤维材料堆肥样品中驯化筛选出一组高温型纤维素分解菌群N6,对其纤维素分解功能特性进行了研究.结果表明,N6培养体系的pH稳定在6.4～8.0之间,降解纤维的适宜温度为50～ 60℃,最高纤维素酶活(CMCase)为0.83 IU/mL；在50℃下,N6在4d内可使滤纸降解90.0％以上,6d内可使玉米秆粉或稻草粉分别降解75.0％和86.4％,9d内可使玉米秆粉或稻草粉分别降解失重79.0％和90.4％,对木薯渣的降解率也在30.0％以上.可见,N6具有降解天然木质纤维的高活性,是可应用于木质纤维材料生物转化的优良菌群.
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