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The results of 35-years lodgepole pine tests in the European North of Russia

2018· article· ru· W3086344478 on OpenAlexaboutno aff
Н.А. Демидова, Т.М. Дуркина, Л.Г. Гоголева, Ю.С. Быков, A. A. Paramonov

Bibliographic record

VenueИзвестия СПбЛТА · 2018
Typearticle
Languageru
FieldAgricultural and Biological Sciences
TopicForest Ecology and Biodiversity Studies
Canadian institutionsnot available
Fundersnot available
KeywordsScots pinePinus contortaForestryPinus <genus>GeographyBiologyEnvironmental scienceBotany

Abstract

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Цель исследований – оценка сохранности, роста и развития сосны скрученной в сравнении с сосной обыкновенной на экспериментальных плантациях в условиях Европейского Севера (Архангельская, Вологодская области и Республика Коми). Анализ хода роста сосны скрученной на плантациях Архангельской области в разных условиях выращивания показал, что сосна скрученная, не уступая в росте сосне обыкновенной, обгоняет ее величине текущего прироста: по высоте – в 1,2–1,5 раза, диаметру – в 1,4–2,0 раза; по объему и величине среднего прироста по объему – в 1,2–2,3 раза. Аналогичные результаты получены в Республике Коми. Лучшими по росту и сохранности в условиях Вологодской области оказались деревья более южного канадского происхождения (55–58 с.ш.), которые превосходят сосну обыкновенную в росте как по диаметру, так и по высоте в 1,2 раза. Авторами отмечено, что с возрастом тенденция превосходства сосны скрученной над сосной обыкновенной сохранилась, но ее рост замедлился. Быстрый рост и интенсивное накопление фитомассы с первых лет жизни делает сосну скрученную менее устойчивой по отношению к ветровой и снеговой нагрузке, особенно на плодородных почвах и склонах. По результатам многолетнего выращивания сосны скрученной на Европейском Севере России авторами не было замечено ее естественное возобновление, что не влечет опасности загрязнения наших лесов инородной породой. С начала закладки первых опытных посадок прошел значительный промежуток времени (более 30 лет), в связи с этим, можно судить о перспективности промышленного выращивания сосны скрученной в условиях Северо-запада России. По результатам проведенных исследований сделан вывод, что Архангельская, Вологодская и Республика Коми являются перспективными районами для выращивания сосны скрученной (Pinus contorta Loud. var. latifolia S. Wats.), что подтверждает отечественный опыт выращивания данной породы в регионах Северо-запада России. Именно здесь она превосходит местные виды по производительности. The aim of the study is to assess the survival, growth and development of lodgepole pine in comparison with the Scots pine on the experimental plantations on the European North of Russia (the Arkhangelsk and Vologda regions, and the Komi Republic). The growth analysis of lodgepole pine on the plantations in the Arkhangelsk region in different growing conditions showed that the lodgepole pine, overtakes Scots pine in terms of the current growth: in height  1.2–1.5 times, in diameter  1.4–2.0 times; in volume and size of the average growth by volume  1.2–2.3 times. Similar results were obtained in the Republic of Komi. The best in terms of growth and survival in the Vologda region were trees of more southern Canadian origin (55–58° N), which exceed the Scots pine in growth both in diameter and in height by 1.2 times. We should note that with age, the tendency of the superiority of lodgepole pine over Scots pine has remained, but the growth of lodgepole pine has slowed. The fast growth and intensive accumulation of phytomass from the first years of life make the lodgepole pine less resistant to wind and snow loads, especially on fertile soils and slopes. According to the results of long-term cultivation of lodgepole pine in the European North of Russia we did not notice its natural regeneration that does not involve the danger of contamination of our forests by alien species. A significant period of time (more than 30 years) has passed since the beginning of the first lodgepole pine experimental planting, therefore, one can judge the prospects of its industrial cultivation in the north-west of Russia. Based on the results of the conducted studies, it was concluded that the Arkhangelsk and Vologda Regions and Komi Republic are perspective areas for Pinus contorta Loud var. latifolia S. Wats. cultivation, that is confirmed with domestic experience of this species cultivation in the regions of North-West of Russia. It superiors the native species by productivity in this area.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.077
Threshold uncertainty score0.984

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0010.002
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.021
GPT teacher head0.213
Teacher spread0.192 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

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Citations0
Published2018
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