scholarly journals Diversity of Pinus sibirica forest types in different bioclimatic sectors of Sayan Mountains

2019 ◽  
Vol 16 ◽  
pp. 00045
Author(s):  
Dilshad M. Danilina ◽  
Dina I. Nazimova ◽  
Maria E. Konovalova
Keyword(s):  
Renewal Process ◽  
Floristic Composition ◽  
Pine Forests ◽  
Pinus Sibirica ◽  
Forest Types ◽  
Age Dynamics ◽  
Restoration Age ◽  
Characteristic Features ◽  
Siberian Pine

The typological diversity of the three climatic facies of Siberian pine forests is considered in various bioclimatic sectors of the Prienisseysky Sayans. In each of the Sayan bioclimatic sectors, Siberian pine forests have a number of characteristic features of floristic composition and phytocenotic structure, restoration-age dynamics, productivity, and renewal process.

scholarly journals Forest cover dynamics of the Bazoy Siberian pine (Pinus sibirica Du Tour) forest from 1915 to 2015

2020 ◽  
Vol 73 (1) ◽  
pp. 52-63
Author(s):  
Nikita Debkov ◽  
Victor Sidorenkov ◽  
Elena Sidorenkova ◽  
Vladimir Sedykh
Keyword(s):  
Forest Cover ◽  
Food Product ◽  
Pine Forests ◽  
West Siberian Plain ◽  
Pinus Sibirica ◽  
Human Economic Activity ◽  
Pine Stands ◽  
Siberian Pine ◽  
The Impact

Abstract The article considers the long-term (100 years) dynamics of the forest cover of the southernmost unit of Siberian pine forests on the West Siberian plain. A key feature of forest management is that Siberian pine seeds are a valuable food product and, when cutting forests, this tree species, as a rule, is preserved. The basis of the experimental data was the material of the national forest inventories of 1915, 1974 and 2015 for a total area of 1,420.41 ha. During the period from 1915 to 2015, the forested area changed slightly (96.2 and 94.0%), while the share of Siberian pine stands increased significantly from 48.4 to 58.7%. Grassy Siberian pine forests (32.1%) of optimal age (120–140 years), which are characterised by the best seed productivity and the largest share of Siberian pine in the community (77%), predominate. Basically, human economic activity results in an increase in the area of Siberian pine stands, when deciduous stands with Siberian pine undergrowth are used for fuel and as building material. A decrease in the area of Siberian pine forests occurs mainly under the impact of fires. In the conflagrations of 1915–1920, 7 to 38% of silver birch forests have no Siberian pine undergrowth and are considered long-term secondary communities. In the remaining area, the proportion of Siberian pine undergrowth is 20–30% with a density of 800–1200 seedlings ha−1, which is sufficient for the natural formation of Siberian pine forests.

Formation of Siberian Pine Forests by Improvement Felling on Former Agriculturаl Lands

2021 ◽  
pp. 9-19
Author(s):  
Sergey V. Zalesov ◽  
Keyword(s):  
Pine Forests ◽  
Pinus Sibirica ◽  
Single Shot ◽  
Agricultural Lands ◽  
Herbaceous Vegetation ◽  
Second Stage ◽  
Pine Trees ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine ◽  
Intensive Growth

On the base of the researches carried out on the permanent study area silvicultural effectiveness of improvement felling was analyzed in soft-leaved plantations formed on the former agricultural lands in Khanty-Mansi Autonomons Okrug – Yugra. It was experimentally found that among 25–30-year-old soft-leaved stands there is Siberian pine (Pinus sibirica Du Tour); besides this, nominal undergrowth of this species can be found under the canopy. Improvement felling can provide an increase in the share of Siberian pine in the composition of the forming plantations and even its dominance in stands. It is recommended to carry out improvement felling by the strip method. On the first-stage the felling of soft-leaved species in strips of 10 m wide is carried out, while leaving strips of similar width without care. On the second stage in 10 years soft-leaved trees are cut down in those strips where care was not taken. Felling of all the accompanying Siberian pine trees in a single shot is inadmissible, since it leads to intensive growth of herbaceous vegetation, sodding and exclusion of the Siberian pine undergrowth as well as dramatically increases the fire danger in spring and autumn. In addition, at the indicated intensity, the specimens of Siberian pine left for cultivation are affected by Pineus cembrae (Cholodovsky, 1988).

scholarly journals СИБИРЬ ХУШ, СИБИРЬ ГАЦУУРЫН ТАРЬЦ УРГУУЛСАН СУДАЛГААНЫ ДҮН

2014 ◽  
Vol 52 (2) ◽  
pp. 53-61
Author(s):  
Ц. Дашзэвэг ◽  
С. Амартүвшин
Keyword(s):  
Pine Forests ◽  
Stream Line ◽  
Pinus Sibirica ◽  
Picea Obovata ◽  
Below Ground ◽  
Basic Characteristics ◽  
Academy Of Sciences ◽  
Siberian Pine ◽  
First Time ◽  
P 53

DOI: http://dx.doi.org/10.5564/pmas.v52i2.360 Proceedings of the Mongolian Academy of Sciences Vol.52(2) 2012 p.53-61SOME RESULTS OF EXPERIMENT TO RAISE SEEDLING OF PINUS SIBIRICA MAYR. AND PICEA OBOVATA LDB.Abstract: In Mongolia, Picea obovata Ldb. grows along the river basin and stream line in mixture with main species of trees. The area of forest dominated by Picea obovata Ldb. is 31.92 thousand hectare in total, which equals to 0.3% of total forest of the country (excluding Saxsaul forest).Experiment to raise Picea obovata seedling has been conducted in forest-vegetational zone of Western Khentii, first time in Mongolia. Experiment found that the most suitable period Picea obovata seeds are between 25 May and 5 June. This paper also presents agro-technique of raising Picea obovata Ldb. seedlings, linear parameters of above and below ground parts of seedling and biomass.Distribution of Siberian Pine forests (Pinus sibirica, Mayr.), basic characteristics, types and present status of Siberian Pine forests of Mongolia are been given in detail. Research of raising seedlings of Siberian Pine was conducted in Tunkhel area of Mandal soum, Selenge aimag, 2003 onwards, and the agrotechnique of raising seedlings of Siberian Pine is been determined.DOI: http://dx.doi.org/10.5564/pmas.v52i2.360 Proceedings of the Mongolian Academy of Sciences Vol.52(2) 2012 p.53-61

DISTRIBUTION OF THE SMALL SPRUCE BARK BEETLE IPS AMITINUS (EICHHOFF, 1872) IN WESTERN SIBERIA

2021 ◽  
Vol 14 (4) ◽  
pp. 77-84
Author(s):  
I. A. Kerchev ◽  
S. A. Krivets ◽  
E. M. Bisirova ◽  
N. A. Smirnov
Keyword(s):  
Bark Beetle ◽  
Western Siberia ◽  
Pine Forests ◽  
Invasive Pest ◽  
Pinus Sibirica ◽  
Spruce Bark Beetle ◽  
Pine Nut ◽  
Spruce Bark ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine

The data on distribution of small spruce bark beetle Ips amitinus (Eichh.) (Coleoptera: Curculionidae: Scolytinae), a new invasive pest of European origin on the territory of Western Siberia are presented. Alien bark beetle species was recorded in the Siberian pine forests of the Tomsk, Kemerovo and Novosibirsk regions. According to the modern data the total invasion range is more than 30 thousand km² with a tendency to further expansion. The number outbreaks of I. amitinus in Siberian pine forests near settlements, in nature preservations and plantations of Pinus sibirica Du Tour cause significant harm to pine-nut harvesting and selective breeding.

scholarly journals Phyllostomidae assemblage (Chiroptera: Mammalia) in altitudinal forests at the Parque Estadual do Ibitipoca, Southeast of Minas Gerais, Brazil

2016 ◽  
Vol 106 (0) ◽  
Author(s):  
Rodrigo M. Mello ◽  
Pedro H. Nobre ◽  
Marco A. Manhães ◽  
Alexmar S. Rodrigues
Keyword(s):  
Species Composition ◽  
Floristic Composition ◽  
Abundant Species ◽  
Minas Gerais ◽  
Forest Types ◽  
Mountainous Areas ◽  
Ecological Relevance ◽  
Forest Region ◽  
Study Sites ◽  
Artibeus Lituratus

ABSTRACT Many studies have demonstrated the ecological relevance and great biodiversity of bats in Brazil. However, mountainous areas have been disproportionately less sampled, mainly in the Southeast. The aim of this study was to identify and compare the richness and diversity of Phyllostomidae, the most diverse bat family, in different forest types in Parque Estadual do Ibitipoca, trying to understand the causes of possible differences. The Parque Estadual do Ibitipoca is inserted in the Serra da Mantiqueira's domain, in an Atlantic Forest region known as "Zona da Mata", state of Minas Gerais, with an altitudinal range between 1200-1784 meters. The study was conducted in two forest types, classified as "Nanofloresta Nebular" and "Floresta Nebular", whose respective data on richness and diversity were compared. The bats were captured with 8-10 mist nets for 14 months (April 2011 to May 2012) and four nights per month totaling 62,171.25 m2h of capture effort. A total of 392 captures (12 species) belonging to the Phyllostomidae family were obtained. The most abundant species were Sturnira lilium (59.9%), Platyrrhinus lineatus (11.3%), Artibeus lituratus (8.7%) and Carollia perspicillata (7.6%). The two sampled areas presented differences in bat richness, diversity and species composition, and this difference was predominantly influenced by S. lilium. It is likely that the observed difference in the assembly of bats between the two study sites depends on the variation in floristic composition. The records of A. lituratus and P. lineatus in a few months of the year and close to Ficus mexiae bearing ripe fruits suggests that at least these species move to the park for a few periods of the year in search of food resources, possibly moving through the altitudinal landscapes.

scholarly journals USE OF FOREST SITE CAPACITY BY FORESTS OF UKRAINE

2018 ◽  
pp. 3-12 ◽  
Author(s):  
V. P. Tkach ◽  
O. V. Kobets ◽  
M. G. Rumiantsev
Keyword(s):  
Steppe Zone ◽  
Pine Forests ◽  
Management Systems ◽  
Forest Steppe ◽  
Forest Site ◽  
Left Bank ◽  
Forest Types ◽  
Natural Zones ◽  
The Right ◽  
Common Oak

The forest site capacity using was quantitatively assessed for the stands of the main forest-forming species of Ukraine, Scots pine and common oak, taking into account natural zones and forest types. The tables of productivity of modal and highly productive pine and oak stands have been developed. It has been found that the stands use an average of 50–75 % of the forest site capacity of lands. The average weighted value of the capacity used by pine forests was 68–76 % in the Polissya zone, 70–78 % and 68–73 % in the Right-bank and Left-bank Forest-Steppe zones respectively, and 54–78 % in the Steppe zone. For oak stands, the value was 71–75 % and 63–71 % for the Right-bank and Left-bank Forest-Steppe zones respectively and 65–75 % for the Steppe zone. The basis for increasing the productivity of forests was confirmed to be the differentiation of forest management systems and individual forestry activities on a zonal and typological basis.

scholarly journals Accelerated formation of Siberian pine (Pinus sibirica Du Tour) stands: a case study from Siberia

2019 ◽  
Vol 65 (No. 8) ◽  
pp. 291-300
Author(s):  
Nikita Debkov
Keyword(s):  
Seed Production ◽  
Threshold Value ◽  
Pinus Sibirica ◽  
Natural Conditions ◽  
Normal Seed ◽  
Pine Trees ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine ◽  
Production Dynamics

Under natural conditions, Siberian pine Pinus sibirica begins to produce commercial cone yields of nuts relatively late (after more than 100 years). The aim of this study was to summarise the experience of the directed formation of Siberian pine forests in Siberia. Experimental objects included plots with traditional thinning of varying intensity and frequency as well as chemical treatment. We assessed the parameters of the stand and its seed production dynamics. Only stands with a minimum density (395–435 trees·ha–1) had a normal seed production energy (1.5 or more cones per shoot). Over-dense stands (830–930 trees·ha–1) were characterised by a low seed production energy (two times or more below the threshold value). In all plots, there were Siberian pine trees with absent or unacceptable seed production energy, which should be removed (DBH up to 28 cm). Seed production energy positively correlated with most tree parameters (age, height, diameter, volume, length and width of crown).

Snow cover on logged sites in fir-Siberian pine forests of the Yenisey Ridge

2014 ◽  
Vol 7 (7) ◽  
pp. 778-787 ◽  
Author(s):  
T. A. Burenina ◽  
A. S. Shishikin ◽  
A. A. Onuchin
Keyword(s):  
Snow Cover ◽  
Pine Forests ◽  
Yenisey Ridge ◽  
Siberian Pine

Soil Seed Banks of Adjacent Unlogged Rain-Forest Types in North-Queensland

1990 ◽  
Vol 38 (3) ◽  
pp. 261 ◽  
Author(s):  
AW Graham ◽  
MS Hopkins
Keyword(s):  
Seed Bank ◽  
Forest Type ◽  
Soil Seed Bank ◽  
Floristic Composition ◽  
Seed Banks ◽  
Scaling Analysis ◽  
Forest Types ◽  
Total Size ◽  
Soil Seed Banks ◽  
Secondary Species

The size and floristic composition of soil seed banks under four adjacent, unlogged and structurally different rainforest types were assessed by exposing 17 surface soil samples (to 40mm depth) to germination-house conditions. The mean size of the seed bank in the undisturbed forest types was 240 seeds m-2 (s.d. 139). Seeds of secondary species dominated the soil seed banks in all forest types, although weed seeds constituted only 0.6-4.0%. Some forest types had characteristic component secondary species in the buried seed bank. Agglomerative classification and multidimensional scaling analysis of quantitative sample data indicated that the parent structural-environmental forest type was the dominant influence in determining composition of the soil seed banks. Comparisons of the seed banks of the intact rainforest with those of nearby disturbed forests showed the former to be 35 to 50% smaller in total size, and lacking in some distinctive secondary species. It was concluded that disturbance, both within and adjacent to rainforest, may influence soil seed bank compositions, and hence future patterns of regeneration.

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