In order to assess the impact of land use change on soil particulate organic carbon(POC) in aggregates,the contents of POC of surface soil samples(0-10 cm,10-20 cm)were investigated in Jian'ou city,Fujian province,China.Results showed that the storages of POC in macroaggregates in woodlands and Citrus aurantium land increased with increasing of aggregate sizes of macroaggregates.The mean storages of POC in bulk soil in 0-20 cm decreased by 74.35% while natural forest conversed into other land use practices,...