Abstract:The typical shelter forests around Dahuofang Reservoir in Liaodong were taken as research object in this study, including the coniferous and broad-leave mixed forest (larch-pine-locust mixed forest), larch, pine and locust. Soil nutrients were determined to study the distribution characteristics of organic carbon, total nitrogen and organic carbon in soil profiles under different forest stands. The results showed that with the increase of soil depth, the soil organic carbon and total nitrogen contents decreased gradually in the studied four forests. The order of soil profile organic carbon contents in the four forests was:larch forest (24.16 g/kg) > locust forest (23.07 g/kg) > coniferous and broad-leave mixed forest (16.06 g/kg) > pine forest (15.76 g/kg). The order of total nitrogen contents was:locust forest (5.23 g/kg) > larch forest (4.57 g/kg) > pine forest(3.45g/kg) > coniferous and broad-keave mixed forest(2.42g/kg); The order of average C/N was:Larch forest(7.36) > coniferous and borad-leave mixed forest(6.51) > pine forest(4.67)>locust forest(4.57). The organic carbon storages of 0-40 cm soil layer in four forest stands:Larch forest (112.94 t/hm2) > locust forest (107.40 t/hm2) > coniferous and broad-leave mixed forest (105.42 t/hm2) > pine forest (89.89 t/hm2). There was no significant difference in soil pH between different forests. And the soil pH of each soil layer increased with the increasing soil depth. The soil bulk densities of the four forests was in descending order:Coniferous and broad-leave mixed forest (1.73 g/cm3) > pine forest (1.65 g/cm3) > larch forest (1.64 g/cm3) > locust forest (1.56 g/cm3). There was a significant positive correlation between soil organic carbon contents and soil total nitrogen contents in the four forest stands, while no significant correlations occurred between soil organic carbon and total nitrogen content and C/N. In the coniferous and broad-leave mixed forest stand, a significant linear relationship occurred between soil bulk density, soil total nitrogen content and soil pH with soil organic carbon, while no significances in other pure forest stands.