The Size of the Assimilatory Apparatus and Its Relationship with Selected Taxation and Increment Traits in Pine (<i>Pinus sylvestris</i> L.) Stands
Studies were carried for 200 trees coming from eight pure pine stands aged 25–95 years, growing in a fresh mixed coniferous forest habitat, in the Murowana Goślina Forest Experimental Station (52°34′ N, 17°00′ E) in western Poland. The aim of the study was to determine the size of the assimilatory a...
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| Autores principales: | , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/bfb68b4f4cf244ae90448dcc85759af1 |
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| Sumario: | Studies were carried for 200 trees coming from eight pure pine stands aged 25–95 years, growing in a fresh mixed coniferous forest habitat, in the Murowana Goślina Forest Experimental Station (52°34′ N, 17°00′ E) in western Poland. The aim of the study was to determine the size of the assimilatory apparatus of single pines (<i>Pinus sylvestris</i> L.): weight of leaved twigs (<i>ugc</i>), needle weight (<i>ic</i>), the volume of leaved twigs (<i>ugo</i>) and needle volume (<i>io</i>) and its relationship with selected dendrometric and increment traits of trees. The basic dendrometric traits were determined (height—<i>h</i> and diameter at breast height—<i>d</i><sub>1.3</sub>) together with selected increments (heights—<i>Ih</i><sub>5</sub> and <i>Ih</i><sub>10</sub>, diameter at breast height—<i>Id</i><sub>5</sub> and <i>Id</i><sub>10</sub>, basal area at breast height—<i>Ig</i><sub>5</sub> and <i>Ig</i><sub>10</sub>, volume—<i>Iv</i><sub>5</sub> and <i>Iv</i><sub>10</sub>). A statistically significant linear correlation and a multiple linear correlation were shown between analysed traits, which confirms a strong relationship of the size of the assimilatory apparatus with tree increment. In this context, the strong correlation with the increment in basal area at breast height (correlation coefficient 0.8731 ÷ 0.9836) and with the increment in diameter at breast height (correlation coefficient 0.7835 ÷ 0.9581), after determining the increment in diameter at breast height requires only simple mathematical transformations to determine the increment in basal area at breast height. For the above-mentioned reasons, the increment in basal area at breast height is predisposed to be commonly used in the determination of the efficiency of the assimilatory apparatus of trees. |
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