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  2. Abies balsamea - Wikipedia

    en.wikipedia.org/wiki/Abies_balsamea

    The balsam fir is one of the greatest exports of Quebec and New England. It is celebrated for its rich green needles, natural conical shape, and needle retention after being cut, and it is notably the most fragrant of all Christmas tree varieties. [17] The balsam fir was used six times for the US Capitol Christmas Tree between 1964 and 2019. [11]

  3. 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.

  4. Choristoneura fumiferana - Wikipedia

    en.wikipedia.org/wiki/Choristoneura_fumiferana

    White spruce, a host tree. Balsam fir is the most susceptible host to outbreaks of the spruce budworm. Annual defoliation of current-year growth for 5 to 8 years will kill the host tree. [16] Defoliation by the spruce budworm is most clearly reflected in the fir's radial growth. The population of mature balsam fir in a forest is greatly reduced ...

  5. How to Plant and Grow a Fraser Fir Tree for Year-Round Beauty

    www.aol.com/plant-grow-fraser-fir-tree-172042818...

    While Balsam fir is more fragrant, Fraser fir holds its needles longer as a cut tree. How long does Fraser fir live? If given the right growing conditions, Fraser fir can live 150 years.

  6. Fraser fir - Wikipedia

    en.wikipedia.org/wiki/Fraser_fir

    Close-up view of Fraser fir foliage. Abies fraseri is a small evergreen coniferous tree typically growing between 30 and 50 ft (10 and 20 m) tall and rarely to 80 ft (20 m), with a trunk diameter of 16–20 in (41–51 cm), rarely 30 in (80 cm).

  7. Periodic annual increment - Wikipedia

    en.wikipedia.org/wiki/Periodic_annual_increment

    Where: Y is the yield (volume, height, DBH, etc.) at times 1 and 2 and T 1 represents the year starting the growth period, and T 2 is the end year. Example: Say that the growth period is from age 5 to age 10, and the yield (height of the tree), is 14 feet at the beginning of the period and 34 feet at the end.

  8. Here's What Real Christmas Trees Cost Across the Country - AOL

    www.aol.com/finance/heres-real-christmas-trees...

    Price: $69 Tree types: Fraser Fir, Concolor Fir, Blue Spruce, White Spruce, Korean Fir Urquhart's Tree Farm. Any tree under seven feet for less than $70 is a welcome sight. Urquhart's will also ...

  9. Forest growth models of Canada - Wikipedia

    en.wikipedia.org/wiki/Forest_growth_models_of_Canada

    Structure and function of growth models vary: some are purely empirical, based on the reproduction of past observations, while others explicitly mimic specific processes relative to tree ecophysiology, stand dynamics, etc. Typically, growth models use forest inventory data and site characteristics, such as soil type, drainage class, average ...

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