Influence of Agricultural Land Use on Soil Organic Carbon Fractions in an Arid Ecosystem
2022
Mahajan, V. | Vasu, D. | Tiwary, P. | Chandran, P.
This study aims to determine the effect of land-use systems on soil organic carbon (SOC) and itsfractions in an arid agro-ecosystem (Kachchh District, Gujarat). SOC fractions (very labile, labile, less labile, and non-labile) and pools (active and passive) from six pedons (two each from mango orchards, sorghum, and cotton cultivated fields) were estimated.The results showed thatSOCand its fractions, except the labile fraction, were significantly affected by land-use up to 20 cm depth. Further, land use significantly affected the absolute content of active carbon pool at 0-10 and 10-20 cm (p<0.05) depth, whereas the effect was significant at 20-50 cm depth at p<0.1. The higher passive carbon pool under the mango plantations indicates plantation crops’potential to increase the carbon sequestration in the soils. The soils under sorghum with higher passive carbon pool suggest that high-root density crops can increase the carbon storage in the arid regions.
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