Agroforestry

What is agroforestry?

Agroforestry is a land-use system in which trees and shrubs are grown intentionally alongside crops, pasture or livestock on the same area of land. Rather than separating forestry from farming, it treats woody perennials as a working part of the agricultural system. The trees provide shade, wind protection, leaf litter and root structure; the crops or animals benefit from the improved microclimate and soil, while the farmer harvests from several layers at once.

Agroforestry is usually grouped into a few broad forms. Silvoarable systems combine trees with annual or perennial crops, often in alleys. Silvopastoral systems combine trees with grazing animals. Forest gardens, or food forests, stack many species into vertical layers that imitate the structure of a young woodland. What these forms share is the deliberate use of ecological interactions — nutrient cycling, shade, biological pest control — to reduce external inputs and spread risk across many outputs.

The approach is ancient in practice and relatively young as a formal discipline. Traditional farming across the Mediterranean, the tropics and temperate Europe has long mixed trees with fields and herds. Modern agroforestry systematises that knowledge and studies it, measuring how tree cover affects yield, water retention, biodiversity and soil carbon.

How Terra Humana understands agroforestry

For Terra Humana, agroforestry is not only a farming technique but an expression of the foundation's core idea: that people and land recover together. We see the tree as the organising element of a healthy landscape — the structure around which soil, water and community reassemble. In this view a field planted with trees is a step toward restoring a degraded place rather than merely a more efficient farm.

We favour designs that build living systems over time instead of maximising a single harvest. That means valuing slow processes — soil formation, canopy development, the return of insects and birds — as real outcomes. It also means honesty: an agroforestry system takes years to mature, and we describe our plots as work in progress rather than finished models.

Agroforestry in practice

Terra Humana's principal site is Sa Medada in Jerzu, in the Ogliastra region of Sardinia, where Project Eden serves as the foundation's first and most important undertaking. The land is being developed as a living laboratory for syntropic agroforestry, permaculture and ecological research on the island's characteristic dry, stony, mineral-rich soils.

The working method combines fast-growing pioneer trees, fruit-bearing species and long-lived trees such as olives, planted together so that the early canopy shelters the ground and prepares conditions for the species that follow. This staged planting draws directly on ecological succession, letting each phase of growth improve the soil for the next.

Much of this remains in an early, developmental stage. Rather than present a completed system, Terra Humana treats Sa Medada as an evolving demonstration of how tree-based agriculture can regenerate a Mediterranean landscape — and documents both its progress and its setbacks as part of the work.