A comparison of soil organic carbon and total nitrogen stock capacity in adjacent cultivated, agriculture and forest soils

Authors : Gamze SAVACI, Temel SARIYILDIZ

Pages : 51-60

Doi:10.38088/jise.456673

View : 19 | Download : 10

Publication Date : 2018-12-29

Article Type : Research Paper

Abstract :Land use type and change cause perturbation of the ecosystem and can influence the Carbon insert ignore into journalissuearticles values(C); stocks and fluxes. In particularly, conversion of forest to agricultural ecosystems affects several soil properties but especially soil organic carbon insert ignore into journalissuearticles values(SOC); concentration and stock. In this present study, main aim was to assess the differences in soil organic carbon and total nitrogen contents and stock capacities in adjacent cultivated land insert ignore into journalissuearticles values(wheat production-CS);, agriculture insert ignore into journalissuearticles values(walnut garden- WS and apple garden-AS);, forestland insert ignore into journalissuearticles values(black pine-BS); and mixture of cultivated + poplar insert ignore into journalissuearticles values(CS+PS); lands. Soil samples were collected from six soil depths insert ignore into journalissuearticles values(0-5 cm, 5-10 cm, 10-15 cm, 15-20 cm, 20-25 cm, 25-30 cm); and analyzed for soil pH, soil texture, bulk density, soil organic carbon insert ignore into journalissuearticles values(SOC); and total nitrogen insert ignore into journalissuearticles values(TN); contents and stock capacities. Results showed that the BS had the highest mean SOC insert ignore into journalissuearticles values(9.52%);, followed by the WS insert ignore into journalissuearticles values(4.84%);, the CS + PS insert ignore into journalissuearticles values(4.83%);, the CS insert ignore into journalissuearticles values(4.43%); and AS insert ignore into journalissuearticles values(3.85%);. Mean TN content was also highest in the BS insert ignore into journalissuearticles values(0.63%); followed by the CS insert ignore into journalissuearticles values(0.157%);, the AS insert ignore into journalissuearticles values(0.154%);, the CS + PS insert ignore into journalissuearticles values(0.147%); and the WS insert ignore into journalissuearticles values(0.131%);. Mean SOC stock capacity was highest for the BS insert ignore into journalissuearticles values(246 mg C ha -1 );, followed by the WS insert ignore into journalissuearticles values(146 mg C ha -1 );, the CS + PS insert ignore into journalissuearticles values(141 mg C ha -1 );, the CS insert ignore into journalissuearticles values(132 mg C ha -1 ); and the AS insert ignore into journalissuearticles values(111 mg C ha -1 );. Mean total N stock capacity was 4.70 mg N ha -1 for the CS, 4.37 mg N ha -1 for the AS, 4.28 mg N ha -1 for the CS + PS, 4.14 mg N ha -1 for the BS and 3.93 mg N ha -1 for the WS. In conclusion, the results indicate that land use type can significantly influence the soil organic carbon and total nitrogen dynamics in the northeast part of Turkey.
Keywords : Forest soil, Agriculture soil, Soil organic carbon, Total nitrogen, Stock capacity