Forestry Engineering Journal Forestry Engineering Journal Лесотехнический журнал 2222-7962 82889 10.34220/issn.2222-7962/2024.1/1 Природопользование Nature Management Природопользование Growth-rate indices and coefficients of the types of growth in height of coniferous forest stands Индексы темпа роста и коэффициенты типа роста по высоте хвойных лесных насаждений Петрин Румен Димитров Petrin Rumen D. lesni4eja2014@gmail.com Научно-исследовательский институт леса Болгарской академии наук, София Болгария Forest Research Institute in Bulgarian Academy of Sciences Sofia Bulgaria 20 06 2024 20 06 2024 14 1 5 15 17 01 2024 29 02 2024 http://lestehjournal.ru/en/journal/2024/no-1-53/growth-rate-indices-and-coefficients-types-growth-height-coniferous-forest

На основании данных о росте по высоте различных пород хвойных насаждений: сосны обыкновенной (Pinus sylvestris L.), сосны черной (Pinus nigra J.F.Arnold), ели обыкновенной (Picea abies (L.) H. Karst.) и пихты белой (Abies alba Mill.) – изучена скорость (или, темп) их роста в одном и том же возрастном интервале. Предложены новые коэффициенты для оценки типа роста и доказана их пригодность к использованию, для чего их сопоставили с нулевыми натуральными показателями Духовникова для отдельных кривых с высокой степенью корреляции. Далее путем применения новых коэффициентов по типу роста были установлены значения и интервалы показателей скорости роста насаждений исследуемых пород. Коэффициенты типа роста, как и индексы темпа роста, являются достаточно удобным инструментом для установления различий и сходства в скорости роста и типе насаждений.

Based on data about the growth in height of different coniferous tree species, namely Scots and Austrian pines (Pinus sylvestris L. and Pinus nigra Arnold), Norway spruce (Picea abies (L.) Karst.) and silver fir (Abies alba Mill.), have their growth rates within the same age range been investigated. New coefficients have been suggested for estimating their types of growth and the suitability of using these coefficients has been proved, as they have been compared with the Douhovnicov’s zero natural indicators for the particular curves, and a high level of correlation has been found. The important parametric (qualitative) growth-rate curves, the curves of the normal numbers for the height growth of the four coniferous tree species are presented and analyzed, as well as the index curves. Further on, while applying the new growth-type coefficients, the values and ranges of the growth-rate indices have been found for the tree species investigated. It has been concluded that the growth-type coefficients, as well as the growth-rate indices, are tools quite comfortable and rather suitable for finding differences and similarities between the rates and types of the growth of forest stands.

 индексы темпа роста коэффициенты типа роста бонитет хвойные породы деревьев growth rate growth type stand-quality level coniferous stands tree species

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