The organic carbon binding micro aggregates and other particles together into macro aggregate is believed to be physically protected from decomposition

which was more stable than the carbon in macro aggregates.The object of this article was to study the distribution of soil organic carbon in aggregates

and to know whether the soil can sequestrate more stable carbon and decrease emission CO_2 or not since vegetation restoration.The results showed that stabile aggregates(>0.25 mm) were increased in soil

and soil organic carbon in different diameter aggregates was increased since vegetation restoration.Though the content of soil organic carbon in <0.25 mm were least under all vegetations

TOC in <0.25 mm in Quercus liaotungensis was three times than that of cropland.The content of soil organic carbon in >5 mm aggregate in vest land

herbage

shrub

early forest

Quercus liaotungensis were higher 149%

209%

104%

62% and 10% than that in cropland.There were much more young organic carbon in macro aggregate since vegetation restoration

and then there was much soil organic carbon in micro aggregates with vegetation succession.Soil organic carbon in micro aggregates is stable

so soil can sequestrate more stable carbon since vegetation restoration.There were positive correlation between the mean weight diameter of aggregate and the content of soil aggregate organic carbon.We can draw a conclusion that thefunction of soil as a carbon pool was strength since the restoration of vegetations in Ziwuling region.