Densidade plantio (mudas/ha)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Ecological Restoration Planting Density Calculator helps determine the number of seedlings per hectare based on spacing. Using a reference of 1,667 seedlings/ha for the standard 3x2 m spacing, this tool assists planners and technicians in sizing nurseries, estimating costs, and scheduling planting for forest restoration, reforestation, and agroforestry projects.
The calculation is simple: divide 10,000 m² (one hectare) by the area occupied by each seedling, which is the product of row spacing and within-row spacing. For 3x2 m, each seedling occupies 6 m², yielding 1,666.67 seedlings/ha. The calculator allows different spacing inputs and returns the density instantly, making simulations and adjustments easy.
Use this calculator when designing degraded area recovery projects, planning native or exotic species planting, or sizing nursery production. It is especially useful for meeting environmental agency requirements that often specify minimum densities. Keep in mind that the ideal spacing depends on the species, planting objective (timber production, conservation, shading), and soil conditions.
Important considerations: the calculated density is theoretical and does not account for mortality, planting failures, or competition. It is recommended to add a 10, 20% margin to seedling numbers. On uneven terrain, spacing may need adjustments to follow contour lines. Always consult technical recommendations specific to your region and target ecosystem.
Frequently asked questions
What does 1,667 seedlings/ha mean?
It is the density resulting from 3x2 m spacing, a standard used in many restoration projects. It represents how many seedlings fit in one hectare under that configuration.
How do I calculate density for other spacings?
Divide 10,000 by the area (in m²) occupied by one seedling (row spacing x within-row spacing). For example, 2x2 m gives 2,500 seedlings/ha.
Does this calculation work for any species?
Yes, the math is the same, but the ideal spacing depends on species characteristics like size and root system.
Should I account for seedling mortality?
Yes, the calculation gives theoretical density. In practice, add 10, 20% extra seedlings to cover planting failures or mortality.
Does the calculator work on uneven terrain?
It calculates density for flat area. On slopes, spacing may need adjustments to follow contour lines and prevent erosion.