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  2. Mean annual increment - Wikipedia

    en.wikipedia.org/wiki/Mean_annual_increment

    The mean annual increment (MAI) or mean annual growth refers to the average growth per year a tree or stand of trees has exhibited/experienced up to a specified age. For example, a 20-year-old tree that has a stem volume of 0.2 m 3 has an MAI of 0.01 m 3 /year.

  3. Periodic annual increment - Wikipedia

    en.wikipedia.org/wiki/Periodic_annual_increment

    PAI may go negative if a tree loses volume due to damage or disease. Periodic annual increment is commonly used instead of current annual increment as a basis for computing growth per cent. Growth per cent indicates the rate of increase with relation to the wood capital required for its production, this is usually based on a single year's ...

  4. Optimal rotation age - Wikipedia

    en.wikipedia.org/wiki/Optimal_rotation_age

    The MAI changes throughout the different growth phases in a tree's life; it is highest in the middle years and then decreases with age. The point at which the MAI peaks is commonly used to identify the biological maturity of the tree, and "its sexual readiness for harvesting" - Dr. Cole Greff, 1984.

  5. Need to know when to prune fruit trees? Experts reveal the ...

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  6. Thinning - Wikipedia

    en.wikipedia.org/wiki/Thinning

    Thinning from below – this low thinning can be split into 4 Grades: A Grade is a very light thinning, that removes all overtopped trees Kraft crown class 4 and 5. B Grade is a very light thinning that removes overtopped trees and intermediates which are Kraft Crown class 4,5 and some 3s, C Grade and D Grade are a moderate and heavy thinning respectively removing anything that will not lead ...

  7. Tree girth measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_girth_measurement

    By contrast, the (roughly) 300-year-old Ice Glen pine in Stockbridge, Massachusetts shows approximately half the annual growth rate of trees in the 90- to 180-year age range, averaging just 5.8 cubic feet (0.16 m 3) per year over a five-year monitoring period. Volume increased as a result of increases in both height and girth.

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