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Allometry of phytomass and production of larch trees in high-productive young forests

Allometry of phytomass and production of larch trees in high-productive young forests

Lesovedenie (1): 54-63, January-February

Four plots in 20-30-year-old plantations, having the individual information about the size, phytomass and fractional production for model trees, were used for calculating the coefficients of equations of generalized allometry. The equations obtained for individual plots were applied for calculating the phytomass and production of fractions in trees of various diameter classes. These values were united into a general sample. Then, coefficients of generalized allometry were calculated. The results obtained by equations were compared witn those obtained by the authors. The stands inverstigated and eight stands, for which the mean stem diameter and height and the number of stems per hectare were known, were analyzed. The generalized allometries provide the accuracy of +-10-20% for the phytomass and production of stems, stem wood, and the whole aboveground phytomass. The accuracy of +-30-50% is characteristic of the branch phytomass, +-40-50% and more, for the phytomass of one-year-old shoots and needles. The estimates of the branch production differ from those in the literature. The similar studies should be extended for other forest-forming species in Russia.

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Accession: 010145465

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