About natural regeneration of English oak growing under the canopy of maternal stand

10.12737/2179 ◽  
2014 ◽  
Vol 3 (4) ◽  
pp. 42-53
Author(s):  
Харченко ◽  
Nikolay Kharchenko ◽  
Харченко ◽  
Nikolay Kharchenko
Keyword(s):  
Biological Property ◽  
Natural Regeneration ◽  
Forest Ecosystems ◽  
Young Age ◽  
Forest Steppe ◽  
Careful Study ◽  
Tree Stand ◽  
Forest Environment ◽  
English Oak ◽  
Maternal Tree

Oak is practically not renewed naturally under the canopy of maternal tree stand under the Central forest steppe. Conversion of oak natural regeneration in knots (with its subsequent total loss) caused by the complex of reasons: From the very young age oak needs enough amount of light (70…80 %). Based on our own research and careful study of the literature on this issue, we conclude that eventually the inability of oak to renew and grow under maternal canopy, changing generations, its biological property. Thus, oak, having formed forest environment, provides the further evolution of forest ecosystems of forest steppe within it.

scholarly journals CONDITION OF ENGLISH OAK NATURAL REGENERATION UNDER A FOREST CANOPY IN THE LEFT-BANK FOREST STEPPE

2018 ◽  
pp. 25-34 ◽  
Author(s):  
M. M. Didenko ◽  
O. K. Polyakov
Keyword(s):  
Relative Density ◽  
Age Structure ◽  
Natural Regeneration ◽  
Forest Canopy ◽  
Size Structure ◽  
Age Distribution ◽  
Forest Steppe ◽  
Left Bank ◽  
English Oak ◽  
Oak Seedlings

In 2010–2016 in 60 sample plots the peculiarities of forming, age and size structure of English oak natural regeneration under forest canopy was studied. It was found that undergrowth density was the highest in the fresh maple and lime oak stand (on average 3.4 thousand plants per ha), significantly increased with the age of the parent stand and decreased with the age of the renewal itself. In the age structure of English oak natural regeneration under a forest canopy, the current year plants predominated (46.1 %); the part of 2–3-year renewal was 29.8 %, the part of 4–8-year-old renewal was 22.7 %, the part of 9–15-year-old renewal was 1.4 %. As the relative density of parent stand stocking increased, the density of oak seedlings increased, the density of current year oaks increased but the density of 4–8-year-old renewal decreased as a result of insufficient illumination or competition with other plants. In the combined sample without age distribution of English oak natural renewal, the success of regeneration was good in 3,3 % of inspected plots, insufficient in 4.9 %, satisfactory in 8.2 %, unsatisfactory in 83,6 % of studied plots.

scholarly journals Geospatial technology perspectives for mining vis-a-vis sustainable forest ecosystems

2017 ◽  
Vol 11 (1) ◽  
pp. 219-238 ◽  
Author(s):  
Laxmi Goparaju ◽  
P. Rama Chandra Prasad ◽  
Firoz Ahmad
Keyword(s):  
Forest Ecosystems ◽  
Anthropogenic Activities ◽  
Biogeochemical Cycles ◽  
Mining Activities ◽  
Forest Environment ◽  
Mining Operations ◽  
Geospatial Technology ◽  
The Status ◽  
The Impact

Abstract Forests, the backbone of biogeochemical cycles and life supporting systems, are under severe pressure due to varied anthropogenic activities. Mining activities are one among the major reasons for forest destruction questioning the survivability and sustainability of flora and fauna existing in that area. Thus, monitoring and managing the impact of mining activities on natural resources at regular intervals is necessary to check the status of their depleted conditions, and to take up restoration and conservative measurements. Geospatial technology provides means to identify the impact of different mining operations on forest ecosystems and helps in proposing initiatives for safeguarding the forest environment. In this context, the present study highlights the problems related to mining in forest ecosystems and elucidates how geospatial technology can be employed at various stages of mining activities to achieve a sustainable forest ecosystem. The study collates information from various sources and highlights the role of geospatial technology in mining industries and reclamation process.

scholarly journals Föhrenverjüngung: Plastizität und Akklimatisation in einem trockeneren Klima

2018 ◽  
Vol 169 (5) ◽  
pp. 269-278
Author(s):  
Barbara Moser ◽  
Christoph Bachofen ◽  
Thomas Wohlgemuth
Keyword(s):  
Scots Pine ◽  
Natural Regeneration ◽  
Common Garden ◽  
Forest Steppe ◽  
Short Time Scale ◽  
Summer Drought ◽  
Spring Precipitation ◽  
Pine Regeneration ◽  
A Minor ◽  
Rhone Valley

Pine regeneration: plasticity and acclimation in a dryer climate Increasing summer drought might limit the natural regeneration of Scots pine stands at low elevations of the Rhone valley. Common garden experiments at the forest-steppe ecotone have shown that emergence and establishment of Scots pine primarily depend on spring precipitation and, to a minor degree, on summer drought and rising temperatures. Scots pine seedlings acclimated rapidly to drought periods by favouring root to shoot growth. In the second year, the saplings were already adapted to drought so that most of them survived an extended spring and summer drought, as recorded at Sion twelve times during the last 154 years. Only an extreme summer drought – no water from June to September – killed 14.7% of the Scots pine saplings. Surprisingly, they were even able to acclimate to such extreme drought events: after the same extreme summer drought in the third year, mortality dropped below 5%. In general, the Scots pine was very plastic, i.e. seedlings and saplings changed their phenotype depending on environmental conditions. But we also found genetic adaptation: Scots pine originating from regions with pronounced summer drought, including populations from lower elevations in the Rhone valley, produced more biomass than those from moister regions in all treatment combinations. Black pine reacted similarly to the treatments like Scots pine, but it grew faster and more saplings survived the first extreme summer drought. These results show that Scots pine from low elevations of the Rhone valley is one of the most drought-tolerant provenances in Europe. Thanks to its high phenotypic plasticity and the ability of seedlings and saplings to acclimate to drought on a short time scale, natural regeneration of Scot pine at low elevations of the Rhone valley is likely to occur also under future conditions, but maybe less frequent than today.

ПОКАЗАТЕЛИ СОСТОЯНИЯ ЛЕСНЫХ ЭКОСИСТЕМ ЛЕСОСТЕПИ ПРИВОЛЖСКОЙ ВОЗВЫШЕННОСТИ

2020 ◽  
Author(s):  
Aleksey Kudryavtsev ◽  
◽  
Keyword(s):  
Forest Ecosystems ◽  
Forest Steppe ◽  
Upland Forest ◽  
Composition And Structure ◽  
Volga Upland

Forest ecosystems transformation reflected to the reduction of the forest areas, fragmentation forests massifs, composition and structure alteration. Complex criteria to estimate of the forest ecosystems condition Volga Upland forest-steppe elaborated.

scholarly journals Radiocarbon Dating of Buried Holocene Soils in Siberia

Radiocarbon ◽  
2002 ◽  
Vol 44 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Lyubov A Orlova ◽  
Valentina S Zykina
Keyword(s):  
Radiocarbon Dating ◽  
Climate Changes ◽  
Soil Formation ◽  
Forest Steppe ◽  
Buried Soils ◽  
Forest Environment ◽  
The Holocene ◽  
Holocene Climatic Optimum ◽  
Time Period ◽  
Two Stages

We have constructed a detailed chronological description of soil formation and its environments with data obtained on radiocarbon ages, palynology, and pedology of the Holocene buried soils in the forest steppe of western and central Siberia. We studied a number of Holocene sections, which were located in different geomorphic situations. Radiocarbon dating of materials from several soil horizons, including soil organic matter (SOM), wood, peat, charcoal, and carbonates, revealed three climatic periods and five stages of soil formation in the second part of the Holocene. 14C ages of approximately 6355 BP, 6020 BP, and 5930 BP showed that the longest and most active stage is associated with the Holocene Climatic Optimum, when dark-grey soils were formed in the forest environment. The conditions of birch forest steppe favored formation of chernozem and associated meadow-chernozem and meadow soils. Subboreal time includes two stages of soil formation corresponding to lake regressions, which were less intense than those of the Holocene Optimum. The soils of that time are chernozem, grassland-chernozem, and saline types, interbedded with thin peat layers 14C dated to around 4555 B P, 4240 BP and 3480 BP, and 3170 B P. Subatlantic time includes two poorly developed hydromorphic paleosols formed within inshore parts of lakes and chernozem-type automorphic paleosol. The older horizon was formed during approximately 2500–1770 BP, and the younger one during approximately 1640–400 B P. The buried soils of the Subatlantic time period also attest to short episodes of lake regression. The climate changes show an evident trend: in the second part of the Atlantic time period it was warmer and drier than at present, and in the Subboreal and Subatlantic time periods the climate was cool and humid.

scholarly journals Source material for breeding soft winter wheat in the forest-steppe of the Middle Volga region

2021 ◽  
Vol 37 ◽  
pp. 00189
Author(s):  
Nadezhda Zakharova ◽  
Nikolai Zakharov
Keyword(s):  
Winter Wheat ◽  
Plant Height ◽  
Winter Hardiness ◽  
Source Material ◽  
Volga Region ◽  
Forest Steppe ◽  
Careful Study ◽  
Middle Volga Region ◽  
Middle Volga ◽  
Soft Winter Wheat

The source material is the initial link of the selection process of any crop. A careful study of it in specific environmental conditions largely determines the effectiveness of breeding activities. The paper presents the results of a study of 102 cultivars of soft winter wheat of various ecological and geographical origin in terms of the yield, winter hardiness, the plant height, the duration of the growing season, the resistance to the frit fly. The sources of individual and a complex of economically valuable indicators were identified and recommended as the source material for breeding use in the forest-steppe conditions of the Middle Volga region. In the winter wheat selection for high winter hardiness, the varieties Omskaya 6, Bagrationovskaya, Novosibirskaya 32, Novosibirskaya 51, Biyskaya Ozimaya, Filatovka, Kulundinka, Poema (Russia), Banga (Latvia), Emoile (Bulgaria), Myropol, Mykolayvka, Dashenka, Kalyanova, Lytavinka, Vinnychanka, Manzheliya, Khersonska bezostaya (Ukraine), Xiao Yan 107, Zhong Pin 1535 (China) are of great interest. Highly productive varieties are Victoria 95, Poema, Biyskaya Ozimaya (Russia), Zamozhnist, Kalyanova, Yasnogorka (Ukraine). Varieties Vdachna, Shestopalivka, Myropol (Ukraine), Svilena, Emoile (Bulgaria), KS 96 WGRC 37, KS 96 WGRC 40, Pacer (USA), Kitami 46 (Japan) XiaoYan 6, Ji Mai 30, Ji Mai 36 (China) are characterized by early ripeness. Short-stalked wheat varieties are Cameo (Russia), Ninka (Ukraine), Ji Mai 18 (China), Kitami 35 (Japan). Highly resistant varieties to the frit fly are Donskaya 50, Dominanta, Poema (Russia), Yasnogorka (Ukraine), Orienta, KS 96 WGRC34, KS 96 WGRC40 (USA), Xiao Yan 7, Zhong Pin 1507, Zhong Pin 1535 (China), Kitami 35 (Japan). Reliable correlations between winter hardiness and productivity, winter hardiness and plant height, plant height and productivity of soft winter wheat were established, which is of practical importance both for crop breeding and for its production use.

scholarly journals NATURAL REGENERATION OF CONIFEROUS FORESTS OF THE LOWER ANGARA REGION AFTER THE FIRES OF VARYING INTENSITY

ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 536-539
Author(s):  
S.V. Zhila ◽  
◽  
G.A. Ivanova ◽  
Keyword(s):  
Forest Ecosystem ◽  
Natural Regeneration ◽  
Forest Ecosystems ◽  
Qualitative Assessment ◽  
Coniferous Forests ◽  
Ecosystem Productivity ◽  
Environmental Processes ◽  
Global Environmental ◽  
Coniferous Plantations

The issue of forest ecosystem productivity and stability of Siberia has not lost its relevance today. The study of this issue is directly related to the assessment of the role of forest ecosystems in global environmental processes. Every year on the territory of Siberia there are thousands of fires, most of which falls on the light coniferous plantations. In connection with what was shown in the quantitative and qualitative assessment of post-natural resumption after fires of different intensity.

scholarly journals GEO-ENERGY AND EMERGENCE OF MODERN NATURAL AND ANTHROPOGENIC FOREST ECOSYSTEMS AND LANDSCAPES

ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 609-613
Author(s):  
B.I. Kochurov ◽  
◽  
N.A. Marunich ◽  
Keyword(s):  
Forest Ecosystems ◽  
Spatial Location ◽  
Self Organization ◽  
Forest Steppe ◽  
Ecological Network ◽  
The North ◽  
Energy Flows ◽  
Modern Natural ◽  
Quantitative Changes ◽  
Anthropogenic Forest

The article defines and calculates the geoenergetics of modern natural and anthropogenic forest ecosystems and landscapes. The geoenergetic approach and the developed technique were used for a detailed description and analysis of energy flows of the forest-steppe landscape of Pridnestrovien. On the example of the ecological network of oak tracts in the north of Pridnestrovien, the emergence of the forest is quantified, taking into account the spatial location. The forecast is made, taking into account the scenarios of economic development, quantitative changes in the emergence of forest ecosystems over time. Applying the geoenergetic matrix, the characteristic is given to the qualitative parameters of the forest-steppe landscape, affecting the formation of stability and self-organization of the natural system.

scholarly journals Assessment of english oak (Quercus robur L.) growth in varied soil-substrate conditions of reclaimed Piaseczno sulfur mine dump

2015 ◽  
Vol 57 (1) ◽  
pp. 28-32 ◽  
Author(s):  
Marcin Pietrzykowski ◽  
Wojciech Krzaklewski ◽  
Justyna Likus ◽  
Bartłomiej Woś
Keyword(s):  
Quercus Robur ◽  
Growth Parameters ◽  
Basal Area ◽  
Clay Content ◽  
Significant Negative Correlation ◽  
Mining Area ◽  
Good Growth ◽  
Tree Stand ◽  
Preliminary Identification ◽  
English Oak

Abstract This study presents selected tree stand features and stand productivity of the English oak (Quercus robur L.) growing in the conditions of a reclaimed external dump of Piaseczno sulfur mine in Tarnobrzeg mining area. Following 40 years of growth in the dump, the oak trees reached first and second bonitation class and good growth parameters. The oak obtained the highest stand volume and basal area on sandy soils and loamy-sand substrates. A significant negative correlation between high clay content in soil cores and tree stand parameters was observed, indicating unfavourable impact on tree growth. The results confirmed the usefulness of the English oak as the main (target) species in the conditions of sulfur dumps, and the suitability of its introduction with preliminary identification of micro-habitat differentiation.

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