Estimation of Soil Organic Carbon and Storage under Aquilaria malaccensis based Homestead Plantation System of Assam
DOI:
https://doi.org/10.55863/ijees.2024.0043Keywords:
Carbon storage, Seasonal variation, Homestead plantation, North east IndiaAbstract
Soil is one of earth’s most complicated environments for life. The single most important property determining the soil i.e., soil organic carbon has gained prominence in assessment of soil quality and also as a strategy for climate change mitigation. However, different forestry practices have different potential to store carbon and depend on the species composition and environmental variables. Hence, the present study has been carried out to investigate the status of soil organic carbon storage in the Aquilaria malaccensis based homestead plantation systems in three districts of Assam viz., Golaghat, Jorhat and Hojai. Soil samples from three depths (0-10, 10-20 and 20-30 cm) were collected seasonally and analyzed. Results indicated that average SOC ranges between 1.51-1.65%. Similarly, SOC stock ranged from 38.8 to 39.7 Mg C ha-1 among the three study sites. Both SOC (%) and stock does not show any significant variation among different depths and sites. Seasonally SOC (%) and stock were high in the post-monsoon season and lowest in the winter season. In the present study SMC, pH, EC, SOM and TKN showed positive relationship with SOC, whereas BD have negative relationship. The present study also reported a marginally higher content of SOC than other plantation systems. Higher content of carbon in Aquilaria based homestead plantations was attributed to the soil characteristics, elevated litter inputs and higher biological activity. Seasonal variation in SOC was attributed to factors such as local climate, rainfall and temperature pattern.
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