The estimation of changes on carbon stocks in lime applicated maize cultivation upland soil by using net ecosystem carbon budget analysis

摘要

Liming is a common agricultural practice worldwide,used for increasing productivity in acid agricultural soils.The effect of liming on soil carbon(C)stock changes wasn’t studied well.To evaluate the effect of liming on C accumulation changes,selected liming material as CaCO3.The treatments were installed different application levels of CaCO3 as 0,0.5,1 and 2 Mg ha-1.The CO2-C flux was increase with increased rate of CaCO3.The two year’s NECB results were different but,the NECB was still highly decreased.Conclusively,Stover should be recycled to increase C stocks.