The ratio of tightly combined humus-C and SOC of farmland were less than other types ofland-using models,and tightly combined humus-C wre converse.

• 耕地的稳结态腐殖质碳比例小于其他几种土地利用方式,而紧结态腐殖质碳比例大于其他几种土地利用方式。