Scientists from the Indian Council of Agricultural Research (ICAR) conducted a nine-year field research in eastern India and found that agroforestry aids climate mitigation while strengthening rural livelihoods. The long-term study, conducted in the climate-stressed Eastern Ghats region of Odisha, shows that even modest one-acre family farms can serve as effective carbon sinks without compromising farm profitability or food security. The study demonstrates how climate action, ecological restoration, and economic resilience can advance simultaneously by combining trees with crops and vegetables, especially for smallholder and tribal farmers dealing with unpredictable monsoons, soil erosion, and diminishing yields.

How Does Agroforestry Help in Capturing Carbon on Small Farms?

To improve carbon storage above and below ground, agroforestry combines trees, crops, and, occasionally, livestock on a single plot of land.

The ICAR study’s main conclusions demonstrate that:

• Over the course of nine years, one-acre agroforestry plots sequestered up to 154.5 megagrams (Mg) of CO₂ equivalent, a substantial contribution for such small landholdings.
• While better soil structure increases soil organic carbon, trees store carbon in their trunks, branches, roots, and leaf litter.
• Agroforestry aids climate mitigation while sustaining household nutrition, as carbon sequestration occurs without decreasing food output.

The study, published in Frontiers in Agronomy, demonstrates that when applied at scale across thousands of farms, carefully planned agroforestry systems can match the climate benefits of larger land-use interventions.

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Why Did Slope Position Matter for Carbon Sequestration Outcomes?

The study found that the amount of carbon that agroforestry systems can store depends critically on land topography.

Researchers noted the following trends:

• Natural runoff from higher altitudes helped lower-slope farms retain more moisture and nutrients, improving tree growth and increasing carbon stocks.
• Biomass accumulation was slowed in upper slope farms due to erosion, runoff losses, and harsher microclimates.

Tree densities of 82 trees per acre, average tree heights of 4.27 meters, and carbon sequestration of 73.1 Mg CO₂ per acre were reported in bottom slope sites. Upper slopes, on the other hand, only stored 27.2 Mg CO₂ per acre. These findings highlight the need for site-specific design in maximizing agroforestry aids climate mitigation goals, particularly in hilly and rain-fed areas such as the Eastern Ghats.

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Which Tree Species Worked Best for Both Climate and Income?

One of the key success factors that affects both carbon storage and agricultural profitability is species selection.

To balance ecological resilience with economic benefits, the research team selected 12 locally appropriate tree species. Important observations consist of:

• Mango (Mangifera indica) and cashew (Anacardium occidentale) worked well as dual-purpose species, providing high biomass and consistent revenue.
• Multipurpose plants such as Cassia siamea and Simarouba glauca supported long-term carbon storage.
• Fruit trees produced marketable produce and boosted above-ground biomass, supporting the notion that agroforestry aids climate mitigation without jeopardizing livelihoods.

Farmers’ integrated systems brought in between Rs 110,000 and Rs 113,000 a year. While cashew production was constant among communities, mango yields exceeded 26 quintals per farmer. Crucially, staple crops, including vegetables, rice, millets, and pulses, were still harvested with minimal yield loss.

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Can Agroforestry Generate Carbon Credit Income for Farmers?

Through carbon markets, agroforestry systems can generate new revenue streams beyond farm products.

The study calculated the following using voluntary market values of $20 per Mg of CO₂:

• Over nine years, 154.5 Mg CO₂ per acre may produce a carbon credit worth about Rs 256,437.
• The release of 112.4 Mg of oxygen per acre was one of the additional ecosystem services that improved the quality of the surrounding environment.

However, the researchers warned that actual profits would rely on market access, verification fees, and registration under accepted carbon norms. Nevertheless, the results show that agroforestry aids climate mitigation while providing smallholder farmers with access to climate funding.

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Frequently Asked Questions (FAQs)

Q1. Why is agroforestry appropriate for small-scale farmers?

Without requiring additional land, agroforestry incorporates trees into already-existing farms. Agroforestry helps mitigate climate change, especially on small plots, by increasing resilience to climate shocks, improving soil health, and diversifying revenue streams.

Q2. Does planting trees lower the yields of food crops?

No. Food crops such as millets, lentils, paddy, and vegetables continued to perform well, according to the ICAR study, demonstrating that trees and crops can coexist in a mutually beneficial way.

Q3. Can this strategy be expanded throughout India?

Yes. Agroforestry-based eco-village models can be implemented in similar rain-fed, hilly, and degraded areas of India, helping the country meet its Paris Agreement goal of sequestering 2.5–3.0 billion tons of carbon while enhancing rural livelihoods.

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