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Quantification and Economic Valuation of Carbon Sequestration from Smallholder Multifunctional Agroforestry: A Study from The Foothills of The Nilgiris, India


Affiliations
1 ICAR-Central Arid Zone Research Institute, Regional Research Institute, Pali Marwar 306 401, India
2 Forest College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 641 301, India
 

Agroforestry is widely recognized for its role in climate change mitigation and adaptation. However, carbon sequestration and a marketable carbon value of smallholder agroforestry systems in India are poorly documented. Therefore, the present study was carried out to quantify carbon stock in a circular-shaped multifunctional agroforestry (MFA) divided into four equal quadrats. It comprises 24 different tree species and 8 intercrops, mainly established to provide daily income to small and marginal farmers. A nondestructive method was used to assess biomass carbon stock. Soil core samples collected from 0 to 60 cm depth were analysed to quantify soil organic carbon (SOC) stock. Results revealed significantly higher biomass and carbon stock in the following order: Neolamarckia cadamba > Melia dubia > Lagerstroemia parviflora > Dalbergia latifolia > Tectona grandis. Duncan’s multiple range test revealed significant differences in the multi-utility circles (P < 0.001). The total change in SOC stock was 11.55 Mg quadrat–1, but the difference was insignificant in different soil depths. The results indicated that the total carbon sequestration and CO2e from vegetation were 2.23 and 9.23 tonnes respectively. Similarly, CO2e from the soil were 42.37 Mg quadrat–1 respectively; the highest contributions were from quadrat II and quadrat IV of MFA. By taking into account profitability and incentives to smallholder farmers, the total marketable carbon revenue of MFA was calculated as US$ 206.40

Keywords

Biomass Carbon Stock, Multifunctional Agroforestry, Soil Organic Carbon, Total Carbon Sequestration.
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  • Quantification and Economic Valuation of Carbon Sequestration from Smallholder Multifunctional Agroforestry: A Study from The Foothills of The Nilgiris, India

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Authors

A. Keerthika
ICAR-Central Arid Zone Research Institute, Regional Research Institute, Pali Marwar 306 401, India
K. T. Parthiban
Forest College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 641 301, India

Abstract


Agroforestry is widely recognized for its role in climate change mitigation and adaptation. However, carbon sequestration and a marketable carbon value of smallholder agroforestry systems in India are poorly documented. Therefore, the present study was carried out to quantify carbon stock in a circular-shaped multifunctional agroforestry (MFA) divided into four equal quadrats. It comprises 24 different tree species and 8 intercrops, mainly established to provide daily income to small and marginal farmers. A nondestructive method was used to assess biomass carbon stock. Soil core samples collected from 0 to 60 cm depth were analysed to quantify soil organic carbon (SOC) stock. Results revealed significantly higher biomass and carbon stock in the following order: Neolamarckia cadamba > Melia dubia > Lagerstroemia parviflora > Dalbergia latifolia > Tectona grandis. Duncan’s multiple range test revealed significant differences in the multi-utility circles (P < 0.001). The total change in SOC stock was 11.55 Mg quadrat–1, but the difference was insignificant in different soil depths. The results indicated that the total carbon sequestration and CO2e from vegetation were 2.23 and 9.23 tonnes respectively. Similarly, CO2e from the soil were 42.37 Mg quadrat–1 respectively; the highest contributions were from quadrat II and quadrat IV of MFA. By taking into account profitability and incentives to smallholder farmers, the total marketable carbon revenue of MFA was calculated as US$ 206.40

Keywords


Biomass Carbon Stock, Multifunctional Agroforestry, Soil Organic Carbon, Total Carbon Sequestration.

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DOI: https://doi.org/10.18520/cs%2Fv122%2Fi1%2F61-69