Morphological characteristics of lodgepole pine and Scots pine needles in experimental plantations of the Komi Republic
Bibliographic record
Abstract
Studies were carried out in five 20-year experimental plantations of lodgepole pine (Pinus contorta Dougl.) on the territory of the Komi Republic.The plantations were planted as 1-2-year-old seedlings with a closed root system in 2004-2007 in forest cultivation areas of various origins: quarries, agricultural lands, pine and spruce clearings.The source material was six forest seed plantations established on a geographical basis in Sweden, using seed progeny of plus trees selected in Canada.Locally-origin Scots pine seedlings were used for control.The following parameters of the needles were assessed: lifespan, dry weight, length, width, thickness, surface area, surface density, dry matter content.It was revealed that, depending on forest conditions, the life expectancy of needles in experimental cultures in the middle taiga subzone of the Komi Republic is 4-6 years for lodgepole pine, and 3-4 years for Scots pine (Pinus sylvestris L.).It is shown that, regardless of the origin of the forest-culture area, the needles of lodgepole pine on average statistically significantly (p < 0.001) surpassed the locally occurring Scots pine in absolute dry weight, length and surface area by 1.4 times.Interspecific differences in such indices as width and thickness of needles have no definite directionality.Dry matter content in needles of both species has no statistically significant differences.Age-related changes in needle mass were established.A positive correlation between the needle mass and the content of dry matter in it was shown.A number of determined indicators are influenced by forest conditions, and they are more pronounced in the Scotch pine than in the lodgepole pine. (-), (,-.0.00-23,0(,350.0 2(2(( 3,0.00( : 3, 2025
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.000 | 0.006 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".