Soil organic carbon storage in different landforms of South Deccan plateau of Andhra Pradesh
2000
Dutta, D. | Sah, K.D. (National Bureau of Soil Survey and Land Use Planning, Calcutta (India). Regional Centre) | Reddy, R.S. | Anil Kumar, K.S. | Koyal, A. (National Bureau of Soil Survey and Land Use Planning, Bangalore (India). Regional Centre)
Thirty-two soil profiles and 44 surface soil-sites in the cultivated areas representing five landforms in South Deccan Plateau of Andhra Pradesh were studied for estimating the soil organic carbon (sac) storage in soils. The study revealed that sac content in the surface 0.15m and up to one m depth varied in different landforms. The content of mean organic carbon in the surface 0.15 m soils was highest in alluvial landform whereas basalt landform showed the highest in the upper one m depth. Granite-gneiss and sandstone landforms showed the least organic carbon storage in both the upper 0.15 m and up to one m soil depth. The mean SOC storage in the five landforms is in the order of: basalt alluvial laterite sandstone granite-gneiss. Parent materials were found to influence the organic carbon storage through its control on soil texture. Drainage played a pivotal role in the distribution and amount of organic carbon especially in granite-gneiss and sandstone landforms. Grouping of soils on the basis of the different soil orders revealed that Vertisols have the highest organic carbon, whereas it was least in Entisols. The ranking of sac storage in different soil orders was in the order: Vertisols Inceptisols Alfisols Entisols.
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