scholarly journals Ecological potential of artificial stands of Scots pine in the Southern Urals

2021 ◽  
Vol 818 (1) ◽  
pp. 012021
Author(s):  
A I Koltunova ◽  
V A Simonenkova ◽  
G T Bastaeva ◽  
V S Simonenkov
Author(s):  
В.А. Усольцев ◽  
И.С. Цепордей ◽  
В.Ф. Ковязин ◽  
А.Ф. Уразова ◽  
А.В. Борников

Загрязнение лесов сильно влияет на их биологическую продуктивность, но вклад генеративной сферы в нее изучается редко. Наше исследование биомассы генеративных органов деревьев и древостоев сосны обыкновенной и березы повислой проводилось в течение одного вегетационного периода в градиенте загрязнения от Карабашского медеплавильного завода на Южном Урале. Установлено, что максимальная биомасса генеративных органов сосны и березы на уровне как дерева, так и древостоя, приходится на буферную часть градиента загрязнения, в которой древостой, согласно явлению гистерезиса, переходит из одного устойчивого состояния в другое, и на эту же буферную зону приходится максимальная изменчивость биомассы генеративных органов. Полученная закономерность, общая для двух древесных видов, указывает на повышенную адаптивную реакцию массы генеративной сферы деревьев и древостоев на загрязнение в буферной зоне, и можно предположить, что это отражает хорошо известное явление гормезиса в биологии. Высказанное предположение требует углубленного изучения влияния загрязнения на генеративную сферу лесных сообществ. Forest pollution strongly affects their biological productivity, but the contribution of the generative sphere to it is rarely studied. Our study of the biomass of generative organs of trees and stands of Scots pine and drooping birch was performed during one growing season in the pollution gradient from the Karabash copper smelting plant in the southern Urals. It is stated the maximum biomass of generative organs of pine and birch at the level of both a tree and a stand, falls on the buffer part of the pollution gradient, in which the tree stand, according to the phenomenon of hysteresis, passes from one stable state to another one, and the same buffer zone accounts for the maximum variability of the biomass of generative organs. The resulting pattern, common to the two species, indicates an increased adaptive response of trees and stands to pollution in the buffer zone in terms of the mass of the generative sphere and one can suppose it reflects the well known phenomenon of hormesis in biology. This assumption requires in-depth studies of the impact of pollution on the generative sphere of forest communities.


ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 660-666
Author(s):  
S.Y. Bakhtina ◽  

Wood density analysis of 16 model trees in four habitats of Scots pine (Pinus sylvestris L.) was carried out on the territory of the Uchalinsky mining and processing plant (the Southern Urals), contaminated with heavy metals. A negative correlation (r = - 0.947) was found between this indicator (it varies from 406±1.0 to 520±2.0 kg/m3 in individual biotopes) and the average annual growth in height (it varies from 34.2 ±1.2 to 62.4 ± 3.2 cm). Density of the wood is formed on the dumps of the plant with less access to nutrients, compared to areas with formed soil. The obtained data prove the relatively high potential of Scots pine for natural phytoremediation of technogenic lands of mining enterprises that pollute the environment with heavy metals.


2020 ◽  
Vol 490 (1) ◽  
pp. 31-35
Author(s):  
D. Yu. Vasil’ev ◽  
S. E. Kucherov ◽  
V. A. Semenov ◽  
A. A. Chibilev

ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 673-679
Author(s):  
A.Yu. Kulagin ◽  
◽  
V.A. Simonenkova ◽  
V.S. Simonenkov ◽  
◽  
...  

On the zonal ecotone of forest and steppe, there are differences in the radial growth of Scots pine. The dynamics of radial growth of Scots pine in the Orenburg forestry state institution indicates a decrease in the indicator over the years, which is associated with a more arid climate of the steppe zone and partially man-made influence of industrial enterprises in Orenburg. On the contrary, the dynamics of radial growth of Scots pine crops in the Buzuluksky Bor NP increases over the years, which, in our opinion, is due to wetter growing conditions in recent years. Comparing the average radial growth of Scots pine in the zonal ecotone of the forest and steppe, we can note higher rates in the forest zone of the NP "Buzuluksky Bor" and lower – in the steppe zone.


Author(s):  
A. O. Khotylev ◽  
N. B. Devisheva ◽  
Al. V. Tevelev ◽  
V. M. Moseichuk

Within the Western slope of the Southern Urals, there are plenty of basite dyke complexes of Riphean to Vendian among Precambrian terrigenous-carbonate formations. In metamorphic formations of the Taratash complex (Archean to Early Proterozoic, the northern closure of the Bashkirian meganticlinorium) there was observed the andesitic dyke with isotopic age of 71±1 Ma (U-Pb SHRIMP II on zircons) and near Bakal two bodies of gabbroids with zircons of similar ages were found. These are the first evidence of possible Mezozoic magmatism in this region.


2017 ◽  
Vol 212 (12) ◽  
pp. 48-50
Author(s):  
Ju.P. Gorichev ◽  
◽  
A.N. Davydychev ◽  
A.Yu. Kulagin ◽  
◽  
...  

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