The changes of soil organic carbon storage in different land use systems are analyzed here.The results are as follows:(1) Among the different land use systems

the different is clear in the amount of soil organic carbon

and the general trend is

economic forest(Castanea mollissima Blume)> soil and water conservation forests> farmland.(2) Among the various land use systems

the content of soil organic carbon(SOC) and soil carbon density decreased with the increase of soil depth

but the extent of decreasing is different due to different land use systems.The change of the amount of soil organic carbon in farmland soil depth is not obvious.(3) The total carbon storage is 41 573.67 t in the study area

and the contribution rate of economic forest of Castanea mollissima Blume is 46.02%

highest among all land use systems;the soil and water conservation forests soil is secondary

and the contribution rate of farmland is only 5.43%.It is concluded that the land use systems have distinct impacts on terrestrial ecosystem carbon storage;the carbon storage of soil ecosystem can be increased through adjusting the land use systems;although the economic forests is always under intense disturbances by people

the soil carbon storage can keep high level because of the large investing from humankind.