GROWTH OF TREES ?? í ON A FIRM IN THE AREA OF LAND NATIONAL FOREST TAPAJÓS AFTER HARVEST WOOD
Abstract
Knowing the growth of trees and settlement is key to the planning forester forestry activities in their area of management. To help with this issue, we evaluated the rate of growth in volume and diameter of trees in the period 1981 - 1997 in the Tapajós National Forest in the Brazilian Amazon after logging. The average diameter growth was 0.30 cm / year for all species of trees with DBH ≥ 5cm, beginning to approach that of an undisturbed forest. The group presented the shade intolerant species of higher diameter growth rates, reaching 0.60 cm / year, while the group of tolerant species grew only 0.23 cm / year. Trees whose crowns receiving full illumination grew 0.66 cm / year higher than those who received partial illumination (0.38 cm / year) or those who were totally shaded (0.17 cm / year). Undamaged trees grew on average 0.32 cm / year higher than those with mild damage (0.22 cm / year) and severe damage (0.03 cm / year). Trees without lianas in the canopy grew on average 0.45 cm / year. The growth in volume was 1.7 m3 / ha / year. The reduced growth after logging, indicates the need to apply thinning the forest.Downloads
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