scholarly journals Strong Disturbance Impact of Tropical Cyclone Lionrock (2016) on Korean Pine-Broadleaved Forest in the Middle Sikhote-Alin Mountain Range, Russian Far East

Forests ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 1017
Author(s):  
Anna S. Vozmishcheva ◽  
Svetlana N. Bondarchuk ◽  
Mikhail N. Gromyko ◽  
Dmitriy E. Kislov ◽  
Elena A. Pimenova ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Tropical Cyclone ◽  
Large Scale ◽  
Tree Mortality ◽  
Russian Far East ◽  
Far East ◽  
Pinus Koraiensis ◽  
Korean Pine ◽  
Sikhote Alin ◽  
Canopy Damage

Tropical cyclones (hurricanes and typhoons) cause large-scale disturbances in forest ecosystems all over the world. In the summer of 2016, a strong tropical cyclone named Lionrock created windthrow patches in the area of more than 400 km2 on the forested eastern slopes of the Sikhote-Alin Range, in the Russian Far East. Such large-scale forest destruction by wind had never been recorded in the area prior to this event. We examined the tropical cyclone impact upon the forest composition, structure and tree mortality rates on two study sites (1 ha and 0.5 ha in size)—a contiguous windthrow patch site, and a site with partial canopy damage. Korean pine (Pinus koraiensis Siebold and Zucc.), Manchurian fir (Abies nephrolepis Trautv.) and Dahurian larch (Larix cajanderi Mayr.) were the primary tree species represented in the affected forest communities. Combined with the partial canopy damage, 7.7% of trees were blown down by the disturbance event. We determined that this one event mortality rate nearly equaled the average mortality rate for a ten year period for these forests (8.5 ± 4.0%) under normal conditions (no large-scale disturbances). Within a contiguous windthrow patch, tree mortality was determined to be 52.6%, which is significantly higher than the cumulative tree loss for the previous 50 years (42.4%). A substantial portion of thinner-stemmed trees (DBH (diameter measured at breast height) < 30 cm) were wind snapped, and those with larger diameters (DBH > 60 cm) were uprooted. Our results indicate that the probability of tree loss due to catastrophic wind loads increases as a result of the decrease in local density. We believe that tree loss estimates should include the impacts within contiguous patches of windthrows, as well as the patches with only partial tree canopy damage. Strong wind impact forecasting is possible with accounting for species composition within the stand sites and their spatial structure.

scholarly journals Tree-ring-based spring precipitation reconstruction in the Sikhote-Alin' Mountain range

2021 ◽  
Vol 17 (2) ◽  
pp. 951-967
Author(s):  
Olga Ukhvatkina ◽  
Alexander Omelko ◽  
Dmitriy Kislov ◽  
Alexander Zhmerenetsky ◽  
Tatyana Epifanova ◽  
...  
Keyword(s):  
Climate Variability ◽  
Tree Ring ◽  
Southern Oscillation ◽  
Russian Far East ◽  
Pinus Koraiensis ◽  
Mountain Range ◽  
Korean Pine ◽  
Sikhote Alin ◽  
The Impact ◽  
Standard Tree

Abstract. Climate reconstructions provide important insight into past climate variability and help us to understand the large-scale climate drivers and impact of climate change. However, our knowledge about long-term year-to-year climate variability is still limited due to the lack of high-resolution reconstructions. Here, we present the first precipitation reconstructions based on tree rings from Pinus koraiensis (Korean pine) from three sites placed along a latitudinal (330 km) gradient in the Sikhote-Alin' mountains in the Russian Far East. The tree-ring width chronologies were built using standard tree-ring procedures. We reconstructed the April–June precipitation for the southern Sikhote-Alin' (SSA), March–June precipitation for the central Sikhote-Alin' (CSA) and March–July precipitation for the northwestern Sikhote-Alin' (NSA) over the years 1602 to 2013, 1804 to 2009 and 1858 to 2013, respectively. We found that an important limiting factor for Korean pine growth was precipitation within the period when the air current coming from the continent during the cold period is replaced with the impact of the wet ocean air current. We identified that common wet years for SSA, CSA and NSA occurred in 1805, 1853, 1877, 1903, 1906, 1927, 1983 and 2009 and common dry years occurred in 1821, 1869, 1919, 1949 and 2003. Our reconstructions have 3-, 15- and 60-year periods, which suggests the influence of the El Niño–Southern Oscillation and Pacific Decadal Oscillation on the region's climate and relevant processes. Despite the impact of various global processes, the main contribution to precipitation formation in the study area is still made by the Pacific Ocean, which determines their amount and periodicity.

scholarly journals Autumn – winter minimum temperature changes in the southern Sikhote-Alin mountain range of northeast Asia since 1509 AD

2017 ◽  
Author(s):  
Olga N. Ukhvatkina ◽  
Alexander M. Omelko ◽  
Alexander A. Zhmerenetsky ◽  
Tatyana Y. Petrenko
Keyword(s):  
Solar Activity ◽  
Minimum Temperature ◽  
Large Scale ◽  
Russian Far East ◽  
Far East ◽  
Northeast Asia ◽  
Winter Season ◽  
Limiting Factors ◽  
Mountain Range ◽  
Sikhote Alin

Abstract. The aim of our research was to reconstruct climatic parameters (for the first time for the Sikhote-Alin mountain range) and to compare them with global climate fluctuations. As a result, we have found that one of the most important limiting factors for the study area is the minimum temperatures of the previous autumn-winter season (August–December), and this finding perfectly conforms to that in other territories. We reconstructed the previous August–December minimum temperature for 505 years, from 1509 to 2014. We found three cold periods (1650–1681, 1791–1853, 1865–1918) and four warm periods (1509–1529, 1562–1583, 1747–1781, and 1944–2014). These periods correlate well with reconstructed data for the Northern Hemisphere and the neighboring territories of China and Japan. Our reconstruction has 2–4, 9-,11, 48 and 189-year periods, which are in line with high-frequency fluctuations in ENSO, the short-term solar cycle, PDO fluctuations and the de-Vier quazi-200 solar activity cycle, respectively. We have confirmed the climatic response to solar activity, which corresponds to cold periods during the solar minimum. These comparisons show that our climatic reconstruction based on tree-ring chronology for this area may potentially provide a proxy record for long-term, large-scale past temperature patterns for northeast Asia. The reconstruction reflects the global traits and local variations in the climatic processes of the southern territory of the Russian Far East for more than the past 500 years.

scholarly journals Genetic Variation of Korean Pine (Pinus koraiensis Sieb. et Zucc.) at Allozyme and RAPD Markers in Korea, China and Russia

2005 ◽  
Vol 54 (1-6) ◽  
pp. 235-246 ◽  
Author(s):  
Z. S. Kim ◽  
J. W. Hwang ◽  
S. W. Lee ◽  
C. Yang ◽  
P. G. Gorovoy
Keyword(s):  
Genetic Variation ◽  
Gene Flow ◽  
Russian Far East ◽  
Far East ◽  
The Other ◽  
Pinus Koraiensis ◽  
Korean Pine ◽  
Allozyme Diversity ◽  
Chinese Populations ◽  
Allozyme Loci

AbstractWe studied and compared genetic variation of Korean pine (Pinus koraiensis Sieb. et Zucc.) from 12 natural populations in Korea, China, and Russian Far East using allozymes and random amplified polymorphic DNAs (RAPDs). Eighteen polymorphic allozyme loci and 38 polymorphic RAPD fragments were analyzed. The level of allozyme diversity (A = 1.95, P95= 46.8%, Ho= 0.158, He= 0.169) and the degree of genetic differentiation (FST= 0.069) were comparable to those of other pines with similar life histories and ecological traits. Allozyme (He) as well as RAPD (Shannon’s index) variation decreased from south (Korea) to north (Russia), providing an evidence for the hypothesis of Korean pine’s northward migration. Differentiations among three different regions (Korea, China, and Russia) as well as among populations within regions were small. Substantial gene flow (Nm= 3.4) may be a partial explanation to this result. Clustering algorithms using various genetic distance measures showed some decisive geographic patterns at allozyme and RAPD level: the geographically close populations tended to be clustered together. On the other hand, two Chinese populations, Xobukho and Wangging, were grouped with the Russian populations rather than with the other Chinese populations. The Xiaoxing’anling and other mountains extended from north to south seemed to function as a barrier against gene flow between the Xobukho and Wangging (located east of the mountains) and the other Chinese P. koraiensis populations (located west of the mountains). The genetic diversities and differentiation estimated from RAPD data in Korean pine were congruent with those of allozymes.

scholarly journals Tree-ring based spring precipitation reconstruction in the Sikhote-Alin Mountain Range

2020 ◽  
Author(s):  
Olga Ukhvatkina ◽  
Alexander Omelko ◽  
Dmitriy Kislov ◽  
Alexander Zhmerenetsky ◽  
Tatyana Epifanova ◽  
...  
Keyword(s):  
Tree Ring ◽  
Southern Oscillation ◽  
Russian Far East ◽  
Ring Width ◽  
Pinus Koraiensis ◽  
Mountain Range ◽  
Korean Pine ◽  
Sikhote Alin ◽  
The Impact ◽  
Standard Tree

Abstract. Here, we present precipitation reconstructions based on tree rings from Pinus koraiensis (Korean pine) from three sites placed along latitudinal (330 km) gradient in Sikhote-Alin mountains, Russian Far East. The tree-ring width chronologies were built using standard tree-ring procedures. We reconstructed the April–June precipitation for the southern Sikhote-Alin (SSA), March–June precipitation for the central Sikhote-Alin (CSA) and March–July precipitation for the northwestern Sikhote-Alin (NSA) over the 1609 to 2013, 1804 to 2009 and 1858 to 2013, respectively. We found that an important limiting factor for Korean pine growth was precipitation within the period when the air current coming from the continent during the cold period is replaced with the impact of the wet ocean air current. We identified common wet years for SSA, CSA and NSA occurred in 1805, 1853, 1877, 1903, 1906, 1927, 1983, 2009 and common dry years occurred in 1821, 1869, 1919, 1949 and 2003. Our reconstructions have 3, 15 and 60 year periods and corresponds to influence of the El Niño-Southern Oscillation and Pacific Decadal Oscillation on the region's climate and relevant processes, respectively. Despite the impact of various global processes, the main contribution to precipitation formation in study area is still made by the Pacific Ocean, which determines their amount and periodicity.

Comparative Analysis of Conditions for Scotch Pine (Pinus sylvestris L.) and Korean Pine Plantations (Pinus koraiensis Siebold et Zucc.) on the Territory of Vladivostok Agglomeration

2020 ◽  
Vol 17 (9) ◽  
pp. 4784-4787
Author(s):  
N. G. Rozlomy ◽  
G. V. Gukov
Keyword(s):  
Pinus Sylvestris ◽  
Forest Fires ◽  
Forest Cover ◽  
Biological Diversity ◽  
Russian Far East ◽  
Far East ◽  
Pinus Koraiensis ◽  
Korean Pine ◽  
Scotch Pine ◽  
Yield Class

The forest cover of the Far East is very high. The forests of the Russian Far East (FE) occupy from 3 to 16% of the areas, that is stock of wood, and biological diversity of this form of vegetation cover. In order to restore and diversify the forest fund in Primorsky Krai, to determine the possibility of obtaining various wood within a short time and the possibility of switching to mass planting, pure crops of Manchurian walnut, Manchurian ash, Amur cork tree, Maksimovich poplar, Korean pine and Scotch pine has been created on the territory of the state forest fund since the early 1950s. The article analyzes the growth of Scotch pine (Pinus sylvestris L.) and Korean pine (Pinus koraiensis Siebold et Zucc.) plantations. The yield class, age, diameter and height, density and stock were determined on 5 trial areas. The analysis of the condition of artificial plantings for Korean cedar and Scotch pine, which were planted from 1954 to 1980, indicates their low capacity for survival, which decreases to 14–25% in 25–40 years, depending on the location of the research object. It confirms the need to expand and reconstruct the green zones of towns of “Great Vladivostok.” The main reasons for reducing the capacity for survival of plantings are forest fires and unauthorized logging.

scholarly journals New records of geometrid moths of the subfamily Ennominae (Lepidoptera: Geometridae) from the Amurskaya Oblast, Russian Far East

2021 ◽  
Vol 7 ◽  
pp. 219-226
Author(s):  
Aleksandr A. Kuzmin ◽  
Evgeny A Belyaev
Keyword(s):  
New Records ◽  
Russian Far East ◽  
Far East ◽  
Great Distance ◽  
Pinus Koraiensis ◽  
Korean Pine ◽  
Primorsky Krai ◽  
First Time ◽  
Eleven Species

Eleven species of geometrid moths from the subfamily Ennominae (Lepidoptera: Geometridae) are reported for the first time from Amurskaya Oblast at the extreme northwestern limit of the distribution of mixed broadleaved &ndash; Korean pine (Pinus koraiensis) forests, at a great distance from their closest habitats in Khabarovsky Krai and Primorsky Krai, Russian Far East: Eilicrinia nuptaria Bremer, 1864, Eudjakonovia emundata (Christoph, 1881), Menophra senilis (Butler, 1878), Ectropis excellens (Butler, 1884), Ectropis aigneri Prout, 1930, Mesastrape fulguraria (Walker, 1860), Arichanna tetrica (Butler, 1878), Agriopis dira (Butler, 1878), Larerannis orthogrammaria (Wehrli, 1927), Phigalia verecundaria (Leech, 1897), and Phanerothyris sinearia (Guen&eacute;e, 1858).

State youth policy and its role in social development

2020 ◽  
Vol 22 (5) ◽  
pp. 12-18
Author(s):  
YURI V. BEREZUTSKIY ◽  
◽  
NIKOLAY M. BAYKOV ◽  
Keyword(s):  
Social Development ◽  
Large Scale ◽  
Russian Far East ◽  
Social Activity ◽  
Far East ◽  
The State ◽  
Youth Policy ◽  
Employment Conditions ◽  
Sociological Studies ◽  
Migratory Movements

The article presents the analysis of the state youth policy as an instrument of influence on the state and social development of youth, its social activity. The contradictions that exist between the performance indicators declared by the state policy and the real problems of youth, determined by the living conditions, are indicated. Based on the results of all-Russian and regional sociological studies and statistics, the motives of migratory movements of youth from their territories of residence to the centers of gravity of the country and foreign countries that have more attractive living and employment conditions for youth are justified. Using the example of the Russian Far East, the dysfunctional consequences of the clerical-bureaucratic approach laid down in the state youth policy to quantify the state of youth ignoring its large-scale migration outflow from the territories of residence are substantiated. Scientific and practical recommendations on improvement of indicators of the state youth policy promoting strengthening of its role in providing the basic needs of youth in various spheres of activity, especially in development of youth business are offered.

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