Why agroforestry is essential for soil restoration, climate resilience, and sustainable farming systems
Across Kenya and many parts of East Africa, forests and farms exist side by side. The boundaries between them are rarely fixed. Communities collect firewood from forest edges, graze livestock on open land, and cultivate crops near natural habitats. As pressure on these landscapes increases, the question is no longer whether people and forests can coexist, but how to design systems that support both ecological and economic resilience.
Agroforestry offers one of the most effective answers.
Agroforestry integrates trees into agricultural landscapes. It brings together crops, livestock, and native vegetation in ways that restore soil function, improve biodiversity, stabilise water systems, and support local livelihoods. When adopted across a region, agroforestry improves soil and water systems, limits the need to clear more forest, and provides communities with more reliable resources.
Where agriculture and ecology meet
Agroforestry includes a wide range of practices, but all share one principle: trees are treated as integral parts of the farm system, not obstacles to higher yields.
There are three broad forms of agroforestry:
Agroecological tree cropping – where fruit, nut, or timber species are grown alongside food crops.
Silvopasture – where trees and shrubs are integrated into grazing systems.
Boundary and contour planting – where trees stabilise soil on slopes, reduce erosion, and provide windbreaks or shade.
These systems reshape the way land functions for the better. Trees regulate microclimates, enhance soil structure, support pollinators, and provide habitat for wildlife moving between forest patches.
On farms near Kakamega Forest, we are working with farmers to plant native tree species such as Croton megalocarpus, Markhamia lutea, and Prunus africana.These are all trees that naturally occur in the forest and once formed part of its wider landscape.
These species restore soil fertility, improve water retention, and provide products such as fodder, fuelwood, and medicinal bark. As more of these native trees return to agricultural land, they rebuild the vegetation cover that once linked forest fragments. Additionally, this restored tree cover strengthens habitat corridors, helping wildlife move safely and supporting the recovery of degraded forest edges.
Rebuilding soil systems
In many traditional agricultural systems, land is cleared of trees to create open fields for crops. Without tree cover, soils are exposed to rain, wind, and direct sunlight. Organic matter breaks down more quickly, nutrients are lost from the topsoil, and moisture evaporates faster. Over time, this leads to compacted, nutrient-poor soils that require increasing inputs to maintain productivity.
In contrast, healthy soil is at the heart of agroforestry because it restores the processes that conventional systems often lose. Tree roots stabilise the ground, reduce erosion, and draw nutrients from deeper layers back toward the surface. Their leaf litter rebuilds organic matter, feeding the fungi and microorganisms that drive nutrient cycling. When trees return to farmland, the soil regains structure, fertility, and the ability to hold water, which lays the foundation for long-term ecological recovery.
In many regions around Kakamega, decades of cultivation without trees have degraded soil structure. Heavy rains wash away topsoil, and long dry spells reduce moisture availability. Agroforestry could reverse this pattern and provide significant benefits to the ecosystem.
Nitrogen-fixing species such as Calliandra and Sesbania can improve soil fertility without the need for synthetic fertilisers. Additionally, deep-rooted native species could increase water infiltration, reducing runoff and improving natural groundwater recharge.
Studies across East Africa show that agroforestry increases soil organic carbon, strengthens soil aggregates, and reduces erosion rates. Each of these indicators contributes directly to ecological restoration.
Restoring biodiversity in working landscapes
Agroforestry supports biodiversity in areas where natural forests have been cleared or fragmented. Trees offer shade, nesting sites, and food sources for birds, insects, and small mammals. Flowering species attract pollinators that improve crop productivity. Mixed-species systems, especially those using indigenous trees, create microhabitats similar to natural forest edges.
In the landscapes surrounding Kakamega Forest, agroforestry could create buffers for the forest to reduce agricultural pressure. Farms that integrate native trees thus help provide stepping stones for wildlife, reducing the isolation of forest fragments. This also leads to higher insect diversity, including beneficial predators that reduce crop pests.
Restoration at the forest edge depends on creating conditions where native species can thrive. Agroforestry helps achieve this by narrowing the ecological gap between farms and natural habitats, allowing regeneration to extend beyond protected boundaries.
Strengthening climate resilience
Agroforestry is a practical climate adaptation strategy for both ecosystems and communities. Trees moderate temperature extremes, reduce wind speed, and stabilise humidity levels around crops. These microclimatic effects reduce crop stress during droughts or heatwaves.
Agroforestry also increases carbon storage. Although these systems hold less carbon than intact forests, they store significantly more than treeless farmland. Soil carbon, biomass, and root systems all contribute to long-term storage, making agroforestry an important component of climate mitigation strategies.
For communities, agroforestry provides diversified income streams. Fruit, fodder, fuelwood, medicinal products, and timber offer economic security during times of crop failure. This reduces the pressure to extract resources from nearby forests, supporting conservation efforts from the ground up.
Reducing reliance on monoculture
Monoculture farming systems dominate many rural landscapes. These systems are highly vulnerable to climate shocks, pests, and market fluctuations. They also demand chemical fertilisers and pesticides, which can degrade soil and water systems.
Agroforestry offers a diversified alternative that spreads risk and improves long-term productivity. Scientific studies consistently show that farms with integrated tree systems experience higher soil moisture, better nutrient availability, and improved long-term yields, especially under climate stress.
In regions around Kakamega Forest, agroforestry provides an alternative to the expansion of monoculture plantations, which reduce biodiversity and disrupt natural water flows. By restoring ecological function and increasing livelihood options, agroforestry becomes a tool for reducing the drivers of deforestation.
Community knowledge and participation
Agroforestry efforts succeed when they build on traditional ecological knowledge that communities have developed over generations. Farmers inherently understand their soils, rainfall patterns, and local species in ways that guide decisions about where trees should be planted, which species perform well, and how they should be managed alongside crops and livestock.
These practices are closely linked to cultural knowledge about food, fuel, medicine, and seasonal cycles. Many native tree species used in agroforestry, such as those that provide fodder, shade, fruits, or medicinal bark, have long been part of local land-use systems. As such, integrating them back into farms strengthens both ecological function and cultural continuity.
Women also play a central role in this traditional knowledge system. In many rural areas, they are often responsible for gathering firewood, managing household nutrition, and observing daily changes in land and climate. Their understanding of useful tree species, preferred planting sites, and long-term maintenance shapes how agroforestry functions in practice. When women are included in planning and decision-making, restoration efforts become more effective and better aligned with community needs.
When communities see clear benefits such as improved soils, reliable resources, and reduced pressure on remaining forest, agroforestry becomes self-sustaining. As a result, trees are protected, maintained, and valued as household assets, helping restoration take root across the wider landscape.
Agroforestry and forest restoration
Agroforestry is central to Leaving a Legacy’s restoration work in Kakamega because forest recovery depends on what happens outside the forest as much as what happens within it. The health of the surrounding farmland shapes soil stability, water flow, and the pressure local households place on remaining native forest.
When farming families have resilient soil, reliable yields, and access to productive native tree species, they are less reliant on firewood collection, charcoal burning, or clearing new land. This reduces the drivers of deforestation while strengthening household income and long-term security.
Our agroforestry approach reflects this reality. We work directly with farmers to:
- introduce and propagate native tree species that belong to the Kakamega ecosystem
- support training in soil restoration, pruning, water retention, and long-term tree care
- improve degraded farmland so families can increase yields without expanding into the forest
- develop livelihood pathways — including fruit trees, beekeeping, and sustainable harvesting — that reduce poverty-driven deforestation
- reconnect isolated forest fragments by restoring tree cover through farm corridors and buffer zones
Agroforestry creates the environmental conditions native forests need to recover. It stabilises soils, slows erosion, and improves the water systems that feed streams originating in agricultural land. It also rebuilds habitat connectivity, allowing pollinators, birds, and small mammals to move between forest patches more safely.
By strengthening both the land and the livelihoods around Kakamega, agroforestry becomes a foundation for long-term forest resilience. It ensures that forest regeneration is supported, not undermined, by the communities who live alongside it. By investing in agroforestry, we support restoration that benefits people, nature, and the businesses who choose to be part of Kakamega’s renewal story.
Restoring landscapes through integration
Agroforestry strengthens ecosystems from the ground up. It restores soil health, supports biodiversity, and builds resilience in rural communities. These systems reflect the reality that people and forests are deeply connected. When agricultural land thrives, forest pressure decreases, and restoration becomes more sustainable.
In Kakamega and across East Africa, agroforestry is one of the most practical and effective tools for rebuilding ecological function. It is a pathway toward healthier landscapes, stronger communities, and forests that can withstand future change.
At Leaving a Legacy, we work with communities to restore land in ways that reflect both ecological realities and local priorities. Agroforestry is central to this approach, supporting healthy soils, thriving forests, and secure livelihoods. Learn more about our agroforestry work here.