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Although a large amount of soil carbon(C)is stored in subsoil, horizons,most studies on soil C dynamics focus on the upper layers.Little is known,however,about the response of the soil carbon dynamics in subsoil, horizons to land use change.The aim of this study is to assess the effects of forest conversion of secondary broadleaf forests(SF)into Chinese fir(CF)plantation on C mineralization and microbial community composition in topsoil(0-10 cm)and subsoil,(60-80 cm).Our results showed that the cumulative of C mineralization content in topsoil were similar between SF and CF by addition of glucose,however,in subsoil, it was significantly lower in CF than in SF(P
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