Tree volume modeling of different poplar clones in plantations in the Vojvodina region
The aim of this study was to develop mathematical models (tables) for calculating the volume of clones I-214, M1 and Deltoid in plantations on different soil types and at different planting distances in the alluvial plains of the Sava, Danube, Tisa and Tamiš rivers in the Vojvodina region....
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| Main Authors: | , , |
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| Format: | Article |
| Language: | Serbian |
| Published: |
Faculty of Forestry, Belgrade
2025-01-01
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| Series: | Glasnik Šumarskog Fakulteta: Univerzitet u Beogradu |
| Subjects: | |
| Online Access: | https://doiserbia.nb.rs/img/doi/0353-4537/2025/0353-45372531055P.pdf |
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| Summary: | The aim of this study was to develop mathematical models (tables) for
calculating the volume of clones I-214, M1 and Deltoid in plantations on
different soil types and at different planting distances in the alluvial
plains of the Sava, Danube, Tisa and Tamiš rivers in the Vojvodina region.
Based on preliminary research, the samples were structured in such a way
that their implementation would provide data for the development of models
for calculating volume (and indirectly volume increment) within acceptable
margins of error. However, as the data collection took place exclusively
after the regular felling in the plantations of the mentioned clones without
the possibility of a targeted selection of missing trees in certain
treatment segments and due to time and spatial limitations in data
collection after the storms of 2023, which caused significant damage to the
forests in the region especially poplar plantations, as well as the need for
their urgent rehabilitation, the planned sample was realized with 102.6% for
I-214, 51.5% for M1 and 46.1% for Deltoid clones, with relatively poor
distribution across river alluviums, soil types and diameter and height
classes. Due to this sampling structure, it was not possible to build models
(tables) at the level of clone, alluvium, soil type and plant spacing, but
they were built based on the combined data for the whole area (Vojvodina),
with certain exceptions - for I-214 (clone spacing and plant form) by
applying the Schumacher-Hall linear mixed hierarchical (cluster) model; for
M1 (clone) by applying classical regression analysis and for Deltoid clones
(clona-alluvium of the Sava, alluvium of the Danube) by applying the mixed
linear hierarchical model, as in the case of I-214. Theoretically, the
reliability of the developed volume tables strongly depends on the size and
structure of the sample. However, their verification on real (not on
empirical) trees and stands in practice will indicate the extent of the
error and, in this context, on the degree of their usability. |
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| ISSN: | 0353-4537 2217-8600 |