Slope position change has an important impact on greenhouse gas (GHG) emissions and existed great uncertainty for mountainous and hilly areas.In this study,we selected different slope position soils under Quercus variabilis artificial forest in the rocky mountainous area of northern China as research materials.Soil cumulative greenhouse gases emissions and absorptions,soil physicochemical properties as well as their relations were analyzed by using the incubation experimental method for 256 h.The results showed that the soils under Q.variabilis artificial forest tended as the source for CO_2 and N_2O,and the sink for CH_4.The slope position directly affected soil physical structure,the distributions of available nutrients and mineral nitrogen under Q.variabilis artificial forest,thus indirectly affected the emission and absorption of greenhouse gases.Affected by soil mineral nitrogen and available nutrient content,the soil cumulative CO_2 emission was summit (SM)>foot slope (FS)>shoulder (SH); the cumulative N_2O emission and cumulative CH_4 absorption were SM>SH>FS,the global warming potential of SM soils was significantly higher than FS and SH soils (P<0.05).From correlation analysis between soil cumulative GHG emissions and soil properties,soil cumulative CO_2 emission showed positive correlation with NO_3~--N (P<0.05),soil cumulative N_2O emission showed positive correlation with BD,soil cumulative CH_4 absorption showed positive correlation with pH,NH_4~+-N,TN and DOC,besides,cumulative CO_2 emission also showed a positive correlation with N_2O emission.Therefore,when planting forests and assessing soil carbon sequestration in mountainous and hilly areas of the region,the changes in cumulative emissions and absorption of greenhouse gases on the slopes should be given high priority.