The content and storage of soil organic carbon ( SOC) were compared in six wood restoration
modes and adjacent abandoned land on opencast coal mine dump，and the mechanisms behind
the differences and their influencing factors were analyzed． Ｒesults showed that the contents of
SOC in six wood lands were significantly higher ( 23． 8%－ 53． 2%) than that of abandoned land
( 1．92 g·kg－1 ) at 0－10 cm soil depth，the index were significantly higher ( 5．8%－70．4%) at 10－
20 cm soil depth than the abandoned land ( 1．39 g·kg－1 ) ，and then the difference of the contents
of SOC in the deep soil ( 20－100 cm) were not significant． The contents of SOC decreased with increase
of soil depth，but the decreasing magnitude of the topsoil ( 0－20 cm) was higher than that of
the deep soil ( 20－100 cm) ． Compared with the deep soil，the topsoil significant higher storage of
SOC in different woods，the SOC storage decreased with the soil depth． Along the 0－100 cm soil
layer，the storage of SOC in six wood lands higher ( 18．1%－42．4%) than that of the abandoned
land ( 17．52 t·hm－2 ) ． The SOC storage of Amorpha fruticosa land ( 24．95 t·hm－2 ) was obviously
higher than that in the other wood lands． The SOC storage in the shrub lands was 12．4% higher than
that of the arbor woods． There were significantly positive correlations among forest litter，fine root
biomass，soil water content and SOC on the dump． Consequently，different plantation restorations
significantly improved the SOC level on the dump in 0 － 100 cm soil，especially the topsoil． But
there was still a big gap about SOC level between the wood restoration lands and the original landform．
To improve the SOC on opencast coal mine dump，A． fruticosa could be selected as the main
wood vegetation．
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