scholarly journals Effects of early thinning regime and tree status on the radial growth and wood density of Scots pine

Silva Fennica ◽  
2007 ◽  
Vol 41 (3) ◽  
Author(s):  
Heli Peltola ◽  
Antti Kilpeläinen ◽  
Kari Sauvala ◽  
Tommi Räisänen ◽  
Veli-Pekka Ikonen
Keyword(s):  
Wood Density ◽  
Scots Pine ◽  
Radial Growth

Altered Growth With Blue Rings: Comparison of Radial Growth and Wood Anatomy Between Trampled and Non-trampled Scots Pine Roots

2022 ◽  
pp. 125922
Author(s):  
Paweł Matulewski ◽  
Agata Buchwal ◽  
Holger Gärtner ◽  
Andrzej M. Jagodziński ◽  
Katarina Čufar
Keyword(s):  
Scots Pine ◽  
Radial Growth ◽  
Wood Anatomy

scholarly journals Growth features of different forms of scots pine in the shrub-sphagnum forest type estuary of the Onega River

2020 ◽  
Vol 10 (2) ◽  
pp. 151-169
Author(s):  
Ekaterina A. Pinaevskaya ◽  
Sergey N. Tarkhanov ◽  
Aleksandr S. Pakhov
Keyword(s):  
Scots Pine ◽  
Radial Growth ◽  
Forest Type ◽  
Northern Taiga ◽  
Morphometric Characteristics ◽  
North West ◽  
The North ◽  
Pine Tree ◽  
European Part Of Russia ◽  
Growth Features

Pinus sylvestris L. is the main tree species of forest ecosystems in the European North of Russia, therefore, in-depth studies of the diversity of forms and growth processes of this plant are important. Forms in pine stand out according to morphological and other characteristics. In conditions of prolonged excessive soil moisture, the joint growth of various forms of pine is observed. The aim of the work is to study the growth of various forms of pine according to morphostructural characteristics in the shrub-sphagnum forest type estuary of the Onega River. Investigations of tree growth (according to the form of seed cone scales apophysis and crown habit) were carried out in shrub-sphagnum pine forests of different ages in the north-west of the European part of Russia (northern taiga subzone). Morphometric measurements of the vegetative and generative spheres in the forms of scots pine were made. It is established that the advantage in morphometric characteristics, average values ​​of radial growth, late and early wood has a pine tree with a «convex» apophysis form. The advantage with respect to the morphometric characteristics of the trunk and crown is form with «ordinary» crown habit. The «ordinary» form has larger cones, a larger value of radial growth and macrostructural parameters of wood compared to the «swamp».

scholarly journals Influence of climate on radial growth of scots pine (Pinus Sylvestris L.) In different habitats of Meshchera lowland

2019 ◽  
pp. 67-77
Author(s):  
O. S. Zheleznova ◽  
S. A. Tobratov
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Radial Growth ◽  
Negative Relationship ◽  
East European Plain ◽  
Radial Increment ◽  
Low Contrast ◽  
Positive Correlation ◽  
East European ◽  
Key Factor

This paper is devoted to the patterns of radial growth of Scots pine (Pinus sylvestris L.) in various topoecological conditions of the Meshchera lowland (Ryazan region, the East European plain). The generalized tree-ring chronologies are constructed for 16 habitats differing in features of a relief of a day surface and a bedrock surface. Despite the relatively low-contrast relief of Meshchera, the average radial pine increment within the study area differs by 2.5 times (1.53.9 mm per year). The correlation and cluster analyses revealed that the key factor influencing the width of annual tree rings of pine is the amount of the available soil moisture. Its surplus (in wetlands) and deficiency (in conditions of sandy outliers) negatively affects the radial pine increment. It is established that in the waterlogged habitats positive correlation of the radial pine increment with temperature and negative with precipitation of autumn of the previous year is observed. The positive correlation of the radial increment with precipitation of autumn, May and with winter temperature is typical for a pine from arid habitats. The negative relationship between the pines growth and amount of precipitation and river discharge may occur with a lag of 14 years in conditions of wetlands. The positive relationship of the radial pine increment with the integral parameters of the current years moisture is more significant in conditions of relatively high hydrodynamics (for example, in conditions of sandy outliers).

scholarly journals Changes in the biomass of scots pine (Pinus sylvestris L.) trees in Europe since 1940

2021 ◽  
pp. 6-22
Author(s):  
А.В. Лебедев ◽  
В.В. Кузьмичев
Keyword(s):  
Wood Density ◽  
Scots Pine ◽  
Wood Properties ◽  
Mixed Effect ◽  
Pine Tree ◽  
Mixed Effect Models ◽  
The Face ◽  
Long Term Trends ◽  
Linear Mixed Effect Models

Сосна обыкновенная является одной из основных лесообразующих пород Европы, а ее древесина находит широкое применение в лесопромышленном комплексе. При оценке углерододепонирующих функций считается, что конверсионные коэффициенты являются константными по времени. Последние исследования показывают, что происходящие климатические изменения оказывают существенное влияние на прирост древесины и ее свойства. Цель данного исследования – выявление долговременных тенденций в изменении биомассы фракций деревьев сосны обыкновенной в Европе, происходящих с 1940 г. Для проверки гипотезы о влиянии календарного года на биомассу фракций деревьев проводился регрессионный анализ с применением линейных моделей смешанных эффектов. Проведенный статистический анализ позволил выявить достоверное влияние (при p < 0,05) календарного года только на биомассу стволов в коре. Наиболее сильно изменения проявляются для деревьев в молодняках и средневозрастных насаждениях, где происходит формирование наибольшего радиального прироста. Для крупномерных стволов, согласно результатам моделирования, снижение биомассы стволов в коре не прослеживается. В ближайшие десятилетия в результате продолжающихся климатических изменений процесс снижения биомассы и плотности древесины крупномерных стволов должен усилиться. Выявленные изменения биомассы сопровождаются снижением плотности древесины, что происходит в результате увеличения в структуре годичного прироста более рыхлой и менее плотной ранней древесины. Таким образом, в условиях ускоряющихся темпов роста древесных растений объемы стволов и запасы древесины не должны напрямую пересчитываться в депонированный углерод с учетом исторических значений конверсионных коэффициентов. Это также следует учитывать при мониторинге, моделировании и использовании углерода и биомассы в лесах в условиях глобальных изменений. Scots pine is one of the main forest-forming species in Europe, and its wood is widely used in the timber industry. When evaluating carbon-depositing functions, the conversion rations are assumed to be constant over time. Recent studies show that the ongoing climatic changes have a significant impact on the growth of trees and wood properties. Therefore, the purpose of this study is to identify long-term trends in the change in the biomass of Scots pine tree fractions in Europe since 1940. To test the hypothesis about the influence of the calendar year on the biomass of tree fractions, regression analysis was performed using linear mixed-effect models. The performed statistically analysis made it possible to reveal a significant effect (p < 0.05) of the calendar year only on the biomass of the trunks in the bark. The changes are most pronounced for trees in young and middle-aged stands, where the formation of the greatest radial growth occurs. For large-sized trunks, according to the simulation results, the biomass of the stems in the bark is not traced. In the coming decades, as a result of ongoing climate change, the decline in biomass and wood density of largesized stems should intensify. The revealed changes in biomass are accompanied by a decrease in wood density, which occurs as a result of an increase in the structure of the annual growth of looser and less dense early wood. Thus, in the context of accelerating growth rates of woody plants, the volume of trunks and wood stock should not be directly converted into deposited carbon, considering the historical values of conversion rations. This should also be considered when monitoring, modeling and using carbon and biomass in forests in the face of global change.

scholarly journals Effect of fertilization and thinning on radial growth of Scots pine.

Silva Fennica ◽  
1979 ◽  
Vol 13 (2) ◽  
Author(s):  
Tapani Haapanen ◽  
Pertti Hari ◽  
Seppo Kellomäki
Keyword(s):  
Scots Pine ◽  
Radial Growth

Scots pine radial growth response to climate and future projections at peat and mineral soils in the boreo-nemoral zone

2018 ◽  
Vol 136 (1-2) ◽  
pp. 639-650
Author(s):  
Egidijus Rimkus ◽  
Johannes Edvardsson ◽  
Justas Kažys ◽  
Rūtilė Pukienė ◽  
Simona Lukošiūnaitė ◽  
...  
Keyword(s):  
Scots Pine ◽  
Radial Growth ◽  
Growth Response ◽  
Future Projections ◽  
Mineral Soils

Variation in radial growth and wood density of Cyclocarya paliurus across its natural distribution

New Forests ◽  
2019 ◽  
Vol 51 (3) ◽  
pp. 453-467 ◽  
Author(s):  
Shengzuo Fang ◽  
Daiyan Sun ◽  
Xulan Shang ◽  
Xiangxiang Fu ◽  
Wanxia Yang
Keyword(s):  
Wood Density ◽  
Radial Growth ◽  
Natural Distribution ◽  
Cyclocarya Paliurus
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