Field Data Collection

Tree Measurements

Trees are measured in nested circles around the plot centre, so that small trees are counted in small circles and large trees in the full plot:

• DBH ≥ 2 cm within 2 m
• DBH ≥ 5 cm within 5 m
• DBH ≥ 10 cm within 10 m
• DBH ≥ 20 cm within 20 m (Dryland forests) or within 15 m (other strata)
• Regeneration (height ≥ 10 cm, DBH ≤ 2 cm) in two 1.5 m subplots 10 m from the centre

For each tree: species, direction and distance from the centre, DBH, quality, health, origin (natural or planted), bole height, total height, and stump diameter and height.