Organic and inorganic carbon stocks and balance of Adana city soils in Turkey

Carbon stocks are calculated between from 0 - 100 cm depths of Adana great soil groups (GSG). Total carbon stock is 567.19 Tg in 0 - 100 cm, 168.37 Tg of which is organic carbon (OC) and 398.83 Tg of which is inorganic carbon (IC). While 77.81% of soil organic carbon consists of alluvial, brown and noncalcareous brown forest soils, 59.77% of soil inorganic carbon (SIC) consists of alluvial, colluvial and brown forest soils. Organic carbon stocks are mostly seen in non-calcareous brown forest soils (53.75 Tg or 31.92% of OC stocks, 22.61% of all area). The least stock is determined in alluvial coast soils (0.02 Tg or 0.01% of OC stocks, 0.01% of all area). Inorganic carbon stocks are mostly found in alluvial soils (165.7 Tg or 41.65% of SIC stocks, 19.88% of all area) and it is least seen in alluvial coast soils (0.12 Tg or 0.03% of SIC stocks, 0.01% of all area). While soil organic carbon amount is between 6.01 - 13.78 kg C m-2, soil inorganic carbon amount changes between 26.27-60.01 kg C m-2. Generally, it is seen that soil organic carbon amount is low in the area where intense agriculture techniques are used and it is high in meadow and forest areas which form high areas.