EFFECT OF PHYSIOGRAPHY, SOIL TYPES AND LAND USE AND CROPPING PATTERN ON SOIL CARBON STOCK AT SEMI-ARID SUBTROPICAL OF UTTAR PRADESH, INDIA

SINGH N.J.¹, KUDRAT M.², JAIN K.^3
1School of Natural Resource Management, College of Post Graduate Studies, Central Agricultural Univ., Umiam- 793 103, Meghalaya, India.
²Department of Soil Science, Indian Institute of Remote Sensing, Dehradun- 248 001, Uttrakhand, India.
³Department of Civil Engineering, Geomatics Engineering, Roorkee- 247 667, Uttrakhand, India.

Received : 07-12-2013     Accepted : 09-01-2014     Published : 03-03-2014
Volume : 3     Issue : 1       Pages : 28 - 34
World Res J Agric Biosyst Eng 3.1 (2014):28-34

In addition to agricultural productivity and sustainability, soil carbon has global significance for its role in global carbon cycle and its response to climate change. Soil carbon stock is sensitive to physiography, soils, land use and management practices. The present study aimed to demonstrate the soil carbon stock in different soils, physiography and cropping pattern in the state of Uttar Pradesh. Soil Organic Carbon (SOC) stock in Indo-Gangetic plains (IGP) of Uttar Pradesh was estimated as 0.53, 0.96, 1.42, 2.27 and 2.97 Pg and Soil Inorganic Carbon (SIC) stock was 0.17, 0.36, 0.66, 1.46, and 2.35 Pg respectively at 0-15, 0-30, 0-50, 0-100 and 0-150 cm depth. The Total Soil Carbon (TC) stock was 0.70, 1.32, 2.07, 3.73, and 5.32 Pg at 0-15, 0-30, 0-50, 0-100 and 0-150 cm depth respectively. SOC stock at soil subgroups levels was also estimated. The trend of SOC stock under various land use and cropping pattern were in the order of Forest > Rice -Wheat > Sugarcane-Wheat > Maize-Wheat > wastelands > Maize-Pulses/Oilseeds. SIC stock was followed the reverse trend of SOC stock.