[Background] Soil environment is one of the key elements affecting soil carbon flux on artificial plantations. This study investigated the mechanisms between soil environmental factors and soil carbon flux thus distinguishing the main driving factors for soil carbon flux,which remained poorly understood to date. [Methods] This study was carried out to understand the soil carbon flux of Robinia pseudoacacia for different restoration periods( 12,14,15,and 18 years) in the Longdong Loess Plateau.Soil carbon fl...