CO2 Efflux from the Stem Surface of Scots Pine under Various Growing Conditions

2020 ◽  
Vol 47 (4) ◽  
pp. 417-426
Author(s):  
A. G. Molchanov ◽  
A. V. Olchev
Keyword(s):  
Scots Pine ◽  
Co2 Efflux ◽  
Growing Conditions

scholarly journals How Time since Forest Fire Affects Stand Structure, Soil Physical-Chemical Properties and Soil CO2 Efflux in Hemiboreal Scots Pine Forest Fire Chronosequence?

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 201 ◽  
Author(s):  
Kajar Köster ◽  
Egle Köster ◽  
Argo Orumaa ◽  
Kristi Parro ◽  
Kalev Jõgiste ◽  
...  
Keyword(s):  
Scots Pine ◽  
Forest Fire ◽  
Stand Structure ◽  
Chemical Properties ◽  
Soil Co2 Efflux ◽  
Pine Forest ◽  
Co2 Efflux ◽  
Soil Co2 ◽  
Physical Chemical ◽  
Scots Pine Forest

scholarly journals Growth of Scots pine plus trees clones, selected by resin productivity in Nizhny Novgorod region

2021 ◽  
Vol 25 (4) ◽  
pp. 5-14
Author(s):  
N.N. Besschetnova ◽  
◽  
V.P. Besschetnov ◽  
A.N. Gorelov ◽  
◽  
...  
Keyword(s):  
Scots Pine ◽  
First Order ◽  
Plus Tree ◽  
Growing Conditions ◽  
Lateral Branches ◽  
Clonal Composition ◽  
Degree Of Similarity ◽  
Nizhny Novgorod Region

The taxational indicators of clones of plus trees of Scots pine, selected by resin productivity, were studied in comparison with similar characteristics of plants, selected by linear parameters of the trunk. They are represented They are presented in the assortment of the forest seed plantation No. 10 in the Semenovsky forestry of the Nizhny Novgorod region, created in 1984 on a plot with the type of forest growing conditions — B2, and the type of forest — maynikovo-lingonberry pine. In the organization of the work, the principle of the only logical difference was observed, as well as the requirements for the typicality, suitability and expediency of the experience. As a test marker for checking the purity of the clonal composition of the plantation, the value of the angle of attachment of the first-order lateral branches to the trunk was used. The height and diameter of the trunk are taken into account in 571 trees with a continuous list. The distribution of the average values of the analyzed indicators in the vegetative offspring of plus trees compared with each other is not uniform. The highest height (16,70 ± 0,43 m) observed in clones of the K-011 plus tree selected by resin productivity is 2,65 m or 1,19 times higher than the lowest value (14,05 ± 0,44 m) inherent in clones of the K-113 plus tree selected by the same criteria, and 2,02 m or 1,14 times higher than the lowest value (14,23 ± 0,31 m) inherent in clones of the K-171 plus tree selected by the same criteria taxational indicators of the trunk. Differences in the taxational indicators of clones in the group of plus trees distinguished by resin productivity, as well as in the group of trunks distinguished by characteristics, correspond to the level of significant ones, which indicates the specificity of their genotypes. The degree of similarity of the plus trees in terms of trunk parameters is not the same, which indicates a different level of individual non-identity of each of the plus trees in relation to the others in their considered population.

scholarly journals Short-term effects of biochar on soil CO2 efflux in boreal Scots pine forests

2020 ◽  
Vol 77 (2) ◽  
Author(s):  
Xudan Zhu ◽  
Tingting Zhu ◽  
Jukka Pumpanen ◽  
Marjo Palviainen ◽  
Xuan Zhou ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Boreal Forest ◽  
Soil Temperature ◽  
Scots Pine ◽  
Pyrolysis Temperature ◽  
Pine Forest ◽  
Co2 Efflux ◽  
Short Term ◽  
Application Rates ◽  
Scots Pine Forest

Abstract Key message During the first summer, wood biochar amendments increased soil temperature, pH, and soil CO2effluxes in a xeric boreal Scots pine forest. The increase of soil CO2efflux could be largely explained by increases in by soil temperature. Higher biochar application rates (1.0 vs 0.5 kg m−2) led to higher soil CO2efflux while the pyrolysis temperature of biochar (500 or 650 °C) had no effect on soil CO2efflux. Context Using biochar as a soil amendment has been proposed to increase the carbon sequestration in soils. However, a more rapid soil organic matter turnover after biochar application might reduce the effectiveness of biochar applications for carbon sequestration. By raising the pyrolysis temperature, biochar with lower contents of labile carbohydrates can be produced. Aims To better understand the effects of biochar on boreal forest soil, we applied two spruce biochar with different pyrolysis temperatures (500 °C and 650 °C) at amounts of 1.0 and 0.5 kg m−2 in a young xeric Scots pine forest in southern Finland. Methods Soil CO2, microbial biomass, and physiochemical properties were measured to track changes after biochar application during the first summer. Results Soil CO2 increased 14.3% in 1.0 kg m−2 treatments and 4.6% in 0.5 kg m−2. Soil temperature and pH were obviously higher in the 1.0 kg m−2 treatments. Differences in soil CO2 among treatments disappear after correcting by soil temperature and soil moisture. Conclusion Biochar increased soil CO2 mainly by raising soil temperature in the short term. Higher biochar application rates led to higher soil CO2 effluxes. The increase in soil CO2 efflux may be transient. More studies are needed to get the optimum biochar amount for carbon sequestration in boreal forest.

scholarly journals Connection between the percentage of late wood and wood density in Scots pine from the southern taiga zone of the European part of Russia

10.12737/3340 ◽  
2014 ◽  
Vol 4 (1) ◽  
pp. 21-26
Author(s):  
Киселева ◽  
Aleksandra Kiseleva ◽  
Хван ◽  
Yuriy Khvan
Keyword(s):  
Environmental Factors ◽  
Scots Pine ◽  
Southern Taiga ◽  
European Part ◽  
Pine Forest ◽  
Taiga Zone ◽  
Late Wood ◽  
European Part Of Russia ◽  
Growing Conditions ◽  
Southern Taiga Zone

There is a relationship between the properties of wood. Percentage of late wood – wood macrostructure characterization is a definite relation to density. This relationship varies slightly depending on the species and environmental factors. Establishment of interrelation of these parameters for wood from different regions and growing conditions, will more accurately judge the quality indicators of wood in specific circumstances. The studies were conducted with a timber of Scots pine growing in the Vologda region. In Ustyuzhansky Forestry two sites differing in conditions of growth are selected - lichen pine forest and blueberry and cranberry pine forest.

scholarly journals Mechanical performance of Scots pine wood from northwestern Poland – A case study

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6781-6794
Author(s):  
Edward Roszyk ◽  
Przemysław Mania ◽  
Elżbieta Iwańska ◽  
Władysław Kusiak ◽  
Magdalena Broda
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Scots Pine ◽  
Mechanical Performance ◽  
Raw Material ◽  
Site Conditions ◽  
Commercially Important ◽  
Growing Conditions ◽  
Northwestern Poland

Scots pine is one of the most commercially important wood species in Europe. This study assessed the potential usefulness of pinewood from the Noteć Forest for construction purposes by evaluating its mechanical properties and investigating the influence of the site conditions on the pinewood performance. Additionally, the variability of the mechanical properties from the bark to the pith was analyzed. The results showed that the properties of pinewood varied significantly within the Noteć Forest despite similar growing conditions, which may be a result of genetic variation. Wood from Sowia Góra had the greatest density (566 kg/m3) and excellent mechanical performance (compressive strength of 64 MPa), while wood from Zamyślin exhibited the lowest density (526 kg/m3) and a lower compressive strength (54 MPa). Comparison of the properties of the pinewoods from various locations indicated that the general conditions in the forest stand, however crucial for tree growth, were not the only determinants of wood performance. The results also showed high variability in density and mechanical properties between juvenile and mature wood in all the examined trees. Overall, pinewood from the poor habitats of the Noteć Forest could be a useful raw material for various industrial purposes.

scholarly journals INFLUENCE OF CLIMATIC AND GEOGRAPHIC FACTORS ON THE SCOTS PINE ADAPTABILITY

2020 ◽  
Vol 10 (3) ◽  
pp. 35-41
Author(s):  
Tat'yana Galdina ◽  
Ekaterina Hazova
Keyword(s):  
Scots Pine ◽  
Anatomical Structure ◽  
Forest Steppe ◽  
Structural Adaptation ◽  
Scotch Pine ◽  
Widespread Species ◽  
Volgograd Region ◽  
Dry Steppe ◽  
Growing Conditions ◽  
Different Origins

Scotch pine is a widespread species that can adapt to various growing conditions. It is important to trace the patterns of adaptability of the species to xeromorphic conditions, which makes it possible to reasonably expand the boundaries of this plant growing and create conditions for obtaining high-quality pine wood. Comparative anatomical studies of Pinus sylvestris L. needle in natural pine forests have been carried out: zone of broad-leaved forests (Bryansk region), southern forest steppe (Voronezh region), dry steppe (Volgograd region) and in provenances of Bryansk, Voronezh, Volgograd origin, growing in the same conditions of the central forest-steppe. As a result of our studies, anatomical variability of needle organs was revealed when moving to arid conditions, which indicates the adaptive response of the species. Studies of the provenances of Scots pine ecotypes from the zone of deciduous forests, southern forest-steppe and dry steppe, have made it possible to note that morphological and anatomical structure of needles changes to local ecotypes. However, it was noted that regularity of differences in morphological and anatomical structure of needles, observed in different forest conditions, is also traced in geographical cultures of different origins (Bryansk, Voronezh and Volgograd). Thus, structural adaptation of the species to the new growing conditions occurs, but genetic regularity of the subspecies remains, which reflects the duration and intensity of growth of all the plant organs. Genetic indicators (in general) determine the productivity and resilience of plantings.

scholarly journals The variability of pulp-wood basic specific gravity of softwood

2004 ◽  
Vol 52 (4) ◽  
pp. 73-82
Author(s):  
Jiří Holan ◽  
Vladimír Gryc
Keyword(s):  
Czech Republic ◽  
Specific Gravity ◽  
Pinus Sylvestris ◽  
Norway Spruce ◽  
Scots Pine ◽  
Radial Direction ◽  
Basic Density ◽  
Geographic Area ◽  
Growing Conditions ◽  
Pulp Wood

In the present study, basic density of pulpwood of Norway spruce (Piceas abies /L./ Karst.) and Scots pine (Pinus sylvestris L.) was investigated. The variability of basic density and factors applied are out of concern. Factors are characterised by localization along the log, growing conditions defined by geographic area of Czech Republic, diameter of log, and the storing of logs within transport loading. Basic density was determined on cores taken by modified Pressler borer in the radial direction from bark to pith. The average basic density of Norway spruce is comparable to Scots pine, as well as the variation coefficient. Basic density of Norway spruce was found 443 kg.m-3 (Vx = 13.9%) where as the Scots pine base density was 450 kg.m-3 (Vx = 15.5%). Basic density was significantly influenced by all factors assessed except the localization of cores along logs. The investigation demonstrated that basic density can be affected by locality of supply in comparison to within logs variability that have much lower importance.

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