scholarly journals Natural regeneration features of broad-leaved species under the canopy of coniferous stands in forest-steppe conditions

2021 ◽  
Vol 875 (1) ◽  
pp. 012051
Author(s):  
V Tsaralunga ◽  
A Tsaralunga ◽  
N Yakovenko ◽  
A Zenishchev
Keyword(s):  
Natural Regeneration ◽  
Quercus Robur ◽  
Betula Pendula ◽  
Stand Structure ◽  
Recovery Process ◽  
Forest Steppe ◽  
Acer Platanoides ◽  
Small Height ◽  
Broad Leaved Species ◽  
Young Growth

Abstract The age structure of the undergrowth was studied using the technique of constructing the age spectra of the adoles-cent population, which revealed the regularities of the natural pine recovery process. The aim of the study was to conduct a comparative analysis of the broad-leaved species renewal under the coniferous (pine) plantations canopy in forest-steppe conditions using the example of the Belgorod region. The research was carried out on 21 test areas using standard silvicultural techniques to assess natural regeneration effectiveness. Quercus robur L. and Ulmus laevis Pall. prevail among deciduous species in the second layer. Tilia cordata Miill, Fraxinus excelsior L., Acer platanoides L., Acer compestre L. reach less than 12%. (Betula pendula Ehrh., Populus tremula L.). The average number of young growth does not exceed 2000-2500 trees per hectare where the ones of medium height prevail (50%) and small height trees reach 22%. In the considered pine stands, Quercus robur L. young growth occurs more often. There is a growth that appeared from dormant buds at the root neck after the death of the seed unit. Units of normal vitality are found only among young growth younger than 5 years old or in communities with a disturbed stand structure.

scholarly journals Broad Leaf Trees as Reservoirs for Phytoseiid Mites (Acari: Phytoseiidae)

2011 ◽  
Vol 39 (No. 2) ◽  
pp. 65-69 ◽  
Author(s):  
J. Kabíček
Keyword(s):  
Species Diversity ◽  
Fagus Sylvatica ◽  
Tree Species ◽  
Quercus Robur ◽  
Betula Pendula ◽  
Deciduous Tree ◽  
Acer Platanoides ◽  
Phytoseiid Mites ◽  
Salix Caprea ◽  
Broad Leaf

The possibility that broad leaf trees can be reservoirs for phytoseiid mites was investigated by determining their occurrence and species diversity on common deciduous tree species. No phytoseiid mites were found on Betula pendula and Populus tremula. Altogether  280 specimens of phytoseiids belonging to six species (Neoseiulella ace-ri, N. tiliarum, Paraseiulus soleiger, Euseius finlandicus, Phytoseius severus, Typhlodromus rhenanus) were found on Acer platanoides, Fagus sylvatica, Quercus robur and Salix caprea. Ph. severus was the dominant phytoseiid species on S. caprea, while N. aceri was most abundant on A. platanoides. The greatest abundance and species diversity of phytoseiids were found on S. caprea that can thus constitute an excellent reservoir for some phytoseiid mites, particularly Phytoseius spp.  

scholarly journals Natural regeneration of beech in mixed stands of beech and fir with spruce (Piceo-Abieti-Fagetum) in the virgin forest "Perucica"

2008 ◽  
pp. 107-126
Author(s):  
Zoran Govedar ◽  
Zoran Stanivukovic
Keyword(s):  
Spatial Distribution ◽  
Special Reference ◽  
Natural Regeneration ◽  
Stand Structure ◽  
Stand Development ◽  
Mixed Stands ◽  
Development Stages ◽  
Virgin Forest ◽  
Lateral Shoots ◽  
Young Growth

Natural regeneration of beech in mixed stands of beech and fir was researched in the virgin forest Perucica, e.g. the basic elements of stand structure with special reference to beech regeneration characteristics, and the regeneration process in the conditions of broken stand canopy. The analysis included the stand development stages in he virgin forest based on the elements of structure, as well as the silvigenetic phases on a transect 10?100 m. The characteristics of beech regeneration (abundance, height, crown size, length of apical and lateral shoots) were measured on the selected regeneration areas (initial regeneration gaps). The silvigenetic phases on the transect and the interdependence of beech regeneration characteristics were assessed based on regeneration characteristics, ways of occurrence and spatial distribution of the young growth.

Древостои дуба черешчатого (Quercus robur) различного происхождения в условиях Кинельского лесничества Самарской области

2018 ◽  
pp. 32-36
Author(s):  
Василий Борисович Троц ◽  
О. Н. Беспаленко
Keyword(s):  
Quercus Robur ◽  
Betula Pendula ◽  
Populus Tremula ◽  
Tilia Cordata ◽  
Acer Platanoides

Одной из основных задач лесоводов Самарской области является сохранение и воспроизводство насаждений дуба черешчатого (Quercus robur). Изучены особенности формирования древостоев дуба черешчатого семенного и порослевого происхождений в разных лесорастительных условиях. Объектами исследований являлись естественные насаждения дуба, произрастающие на богатых почвах с сухим, свежим и влажным режимом увлажнения (лесорастительные условия Д1 – Д3). Выявлено, что дуб черешчатый произрастает совместно с березой повислой (Betula pendula), кленом остролистным (Acer platanoides), осиной обыкновенной (Populus tremula) и липой мелколистной (Tilia cordata). Бонитет насаждений дуба порослевого происхождения равен III – IV классу. При этом наиболее высокорослые древостои (19,1 м) с максимальным запасом дубовой древесины (130 м3/га) формируются в дубравах с лесорастительными условиями Д2. В дубравах семенного происхождения наиболее высокие деревья дуба (30,6 м) с классом бонитета Ia формируются в составе насаждений 5Д3Ос2Кл+ЛП, находящихся в лесорастительных условиях Д3. Максимальный запас сыростоячей древесины (230 м3/га) имеют древостои в составе 7Д3Ос+Б, произрастающие в свежих местах обитания с режимом увлажнения, близким к оптимальному — Д2. Дубравы семенного происхождения при практически равном возрасте с порослевыми дубравами по запасу сыростоячей древесины на 1 га в среднем на 56,5 % продуктивнее их. Высота деревьев в семенных дубравах в среднем на 9,3 м, а их диаметр на 12,8 см больше, чем в порослевых дубравах. При этом их бонитет соответствует Ia – I классу.

scholarly journals DYNAMICS OF HEIGHT RANGE DISTRIBUTION OF TREES IN THE FOREST SHELTER BELT WITH PARTICIPATION OF ENGLISH OAK (QUERCUS ROBUR L.) AND NORWAY MAPLE (ACER PLATANOIDES L.)

2020 ◽  
Vol 10 (1) ◽  
pp. 15-25
Author(s):  
Olesya Gribacheva ◽  
Aleksey Chernodubov ◽  
Dmitriy Sotnikov
Keyword(s):  
Growth And Development ◽  
Quercus Robur ◽  
Stand Structure ◽  
Adaptive Landscape ◽  
Test Plot ◽  
Acer Platanoides ◽  
Height Range ◽  
Norway Maple ◽  
English Oak ◽  
Second Tier

Protective afforestation is organizing basis of adaptive landscape agriculture. The aim of the study is to distribute the trees of English oak (Quercus robur L.) and Norway maple (Acer platanoides L.) in height to establish the complexity of stand structure. The differentiation of trees by height in the shelterbelt, which is located in the vicinity of the village Zolotarevka, Lugansk region, Stanichno-Lugansk district, has been considered. In the plantation under study, we laid two permanent test plots in accordance with 56-69-83 Industrial Standard. Relative height of each class of the ranked row, reduction numbers and ranks of maple and oak stands, forming a field-protecting strip, have been determined based on the results of enumeration taxation. Reduction numbers and ranks have been determined according to the methodology of L. V. Stonozhenko et al. The authors have revealed that the predominance of leader trees with 26-27 grades in the oak-tree stand of Quercus robur L. (first test plot) is explained by a decrease in the growth rate of the main part of the stand due to the sparse standing of trees. Analyzing the state of the stand, during the formation of the second tier (maple stand on the first test plot), growth and development of oak and is worsened. Thinning can be seen as the final result. The authors emphasize in the work that there is an improvement in the growth and development of English oak when simplifying maple stand (second test plot). The consequence of all these is more complicated form of plantation

scholarly journals Epiphytic bryophytes of the State Dendrological Park “Olexandria” of the NAS of Ukraine

2020 ◽  
Vol 87-88 ◽  
pp. 108-114
Author(s):  
Lyubov Pleskach ◽  
Vitaliy Virchenko
Keyword(s):  
Species Diversity ◽  
Quercus Robur ◽  
Quercus Rubra ◽  
Steppe Zone ◽  
The State ◽  
Forest Steppe ◽  
Tilia Cordata ◽  
Acer Platanoides ◽  
Acer Campestre ◽  
Pohlia Nutans

Investigations of the species diversity of epiphytic bryophytes of the State Dendrological Park “Olexandria” (the historical part and the “Budynok Lisnyka” plot) were conducted in 2017–2019 and revealed 40 species representing 22 genera, 17 families, seven orders, two classes, and two divisions. This corresponds to 46.51 % of the total number of detected bryophytes in the park. The leading families in the bryoflora of the park are Orthotrichaceae (9 species), Brachytheciaceae (6), Amblystegiaceae (3), Anomodontaceae (3), Dicranaceae (3), Hypnaceae (3), and Pottiaceae (2). The leading genera are Orthotrichum (9 species), Anomodon (3), and Dicranum (3).Among the identified taxa, five species (Dicranum tauricum, Orthotrichum lyellii, Porella platyphylla, Sciuro-hypnum reflexum, and Syntrichia virescens) are regionally rare within the Forest-Steppe zone of Ukraine. Most of the recorded epiphytic mosses were found on the bark of Acer platanoides (28 species), Fraxinus excelsior (27), Quercus robur (26), Acer campestre (23), and Tilia cordata (22). The least epiphytic mosses were found on the bark of conifers (Pinus sylvestris, P. strobus, Picea abies, Larix decidua, etc.).The surveyed trees in the State Dendrological Park “Olexandria” were also found such epigeal mosses as Plagiomnium cuspidatum, Ceratodon purpureus, Dicranella heteromalla, and Pohlia nutans, as well as epixilic moss Dicranum flagellare, etc.The “Budynok Lisnyka” plot hosts three species that do not occur in the park’s historical part. In particular, Lophocolea heterophylla and Sciuro-hypnum curtum were found there on Quercus robur trunks and Sciuro-hypnum reflexum on Quercus rubra bark. At the same time, the historical part of the park is characterized by the number of expansive bryophytes.

scholarly journals ВІКОВА СТРУКТУРА ПІДРОСТУ CARPINUS BETULUS L. У КУЛЬТУРФІТОЦЕНОЗАХ НАЦІОНАЛЬНОГО ДЕНДРОЛОГІЧНОГО ПАРКУ «СОФІЇВКА» НАН УКРАЇНИ

2021 ◽  
Vol 81 (1-2) ◽  
pp. 8-13
Author(s):  
O. L. Porokhniava ◽  
V. M. Hrabovyi ◽  
H. I. Muzyka ◽  
O. Y. Rumiankov
Keyword(s):  
Natural Regeneration ◽  
Fraxinus Excelsior ◽  
Quantitative Composition ◽  
Acer Platanoides ◽  
Adaptive Potential ◽  
Carpinus Betulus ◽  
Acer Campestre ◽  
The Past ◽  
Existing Structure ◽  
Young Growth

The issue of preserving the dendrological structure in historical parks requires the implementation of a number of agronomic measures aimed at ensuring the decorative and durability of plant communities. The plants of Carpinus betulus L. are included in the vast majority of deciduous plantations of the National Dendrological Park «Sofiyivka» of NASU, form the stands with the participation of Quercus robur L., Acer platanoides L., Acer campestre L. and Fraxinus excelsior L. The question of self-recovery of C. betulus plants in the park is relevant in connection with natural waste and active reduction of its viability identified over the past 10 years. The analysis of the success of natural regeneration of aboriginal plants in the cultural phytocenoses of the National Dendrological Park «Sofiyivka» of NASU has been conducted. As a result of the survey of the dendrological structure, viability of the young growth of the main structure-forming species under the stand was revealed. The prospects of replacing senile plants of C. betulus with the younger generation have been outlined. The young growth of C. betulus is 4.5% of the total number of viable undergrowth in the test plots, which is significantly less compared to A. platanoides – 64.5 % and A. campestre – 20. 7%. There is a sufficient number of viable virginile and young generative plants of C. betulus, which in future is able to form a stand. Prospects for natural regeneration of plants of the C. betulus species are average, similar in quantitative and age characteristics to plants of the Fraxinus excelsior L. The number of virginile plants is 0.5 %, and young generative – 0.1 %, compared with A. platanoides and A. campestre, the results are more than 10 times lower for virginile and 2 times – for young generative plants, which indicates a weak competitiveness of the young growth of C. betulus. Artificial phytocenoses with the participation of C. betulus are one of a few self-regenerating species in the park, as aboriginal species have a higher adaptive potential and are capable of successful renewal. Control over the ratio of species and quantitative composition of undergrowth, timely rational sanitary and landscape felling will create optimal conditions for growth and development of the young growth of C. betulus. Regular removal of aggressive plants of A. platanoides, A. campestre and F. excelsior will help preserve the existing structure of the stand in the historic part of the NDP «Sofiyivka».

scholarly journals Distribution of English Oak (Quercus robur L.) and Norway Maple (Acer platanoides L.) with Height in a Shelterbelt

2020 ◽  
pp. 111-119
Author(s):  
O.V. Gribacheva ◽  
◽  
A.I. Chernodubov ◽  
Keyword(s):  
Normal Distribution ◽  
Quercus Robur ◽  
Stand Structure ◽  
Adaptive Landscape ◽  
Average Height ◽  
Acer Platanoides ◽  
Sampling Area ◽  
Norway Maple ◽  
English Oak ◽  
Structure Evaluation

The organizing framework of adaptive landscape agriculture is protective afforestation. The study of the shelterbelt state is necessary for detection of their protective height due to the dramatically changing climatic conditions. The research purpose is to carry out the distribution of trees of English oak (Quercus robur L.) and Norway maple (Acer platanoides L.) with height for the stand structure evaluation, as well as to propose the measures for the condition improvement of English oak. The shelterbelt, the spatial structure of which was studied, is located in the vicinity of the village of Zolotarevka (65 km from the city of Lugansk). Archival data on the creation time and age of the studied forest shelterbelt were not revealed. Shelterbelts in the Lugansk region were created in accordance with the “Great Plan for the Transformation of Nature”, which was designed for 1949–1965. Sampling areas were laid out in accordance with the industrial standard OST 56-69–83. The composition of the shelterbelt, the diameter and average height of the trees were determined based on the results of enumerative valuation. The coefficients of skewness and kurtosis of stands of the studied species were calculated by the standard methods of biometrics. The distribution of Norway maple and English oak trees with height was checked with the normal distribution of trees in the plantation according to the Shapiro-Wilk test. The authors revealed that arithmetic and valuation mean heights of the stands of English oak and Norway maple on two permanent sampling areas differ slightly. It was found that the stand of Norway maple on the first and second sampling areas is characterized by positive right-side symmetry and positive kurtosis. Analyzing the stand condition, it is arguable that the coefficient of skewness of the English Oak stand on both areas is not the same in sign and numerical value: on the first sampling area – leftside negative (As = –2.026) and on the second – right-side positive (As = 0.973). The authors pay particular attention to the fact that the value of the coefficient of kurtosis of the English Oak stands is the highest on the first sampling area – 3.044. On the basis of the Shapiro-Wilk test it is shown that the curve of distribution of the Norway maple stands with height on the first and second sampling areas does not correspond to the normal distribution curve for the plantations. While the curve of distribution of the English Oak stands with height on the second sampling area is close to the indicator of the Shapiro-Wilk test for normal stands and is 0.823 (for p = 0.05, W = 0.842, n = 10).

scholarly journals THE PLACE OF QUERCUS ROBUR L. IN THE DYNAMICAL PROCESSES IN THE OAK FORESTS OF FOREST-STEPPE ZONE

2021 ◽  
Author(s):  
Anastasiya Kondrat'eva
Keyword(s):  
Natural Regeneration ◽  
Quercus Robur ◽  
Steppe Zone ◽  
Oak Forests ◽  
Forest Steppe ◽  
Forest Communities ◽  
Dynamical Processes ◽  
Population Strategy ◽  
New View

A new view of the position of oak in the successional processes of oak forests of the forest-steppe is presented, based on the population strategy of this species and the peculiarities of the conditions for the development of pregenerative stages. The preferable conditions for natural regeneration of oak in forest communities and their relationship with the dynamics of deciduous communities of the forest-steppe are analyzed.

scholarly journals Активність інвертази та уреази в ґрунтах рекультивованих територій західного Донбасу

2009 ◽  
Vol 17 (3) ◽  
pp. 3-7
Author(s):  
O. M. Vasilyuk ◽  
A. F. Kulik
Keyword(s):  
Quercus Robur ◽  
Betula Pendula ◽  
Robinia Pseudoacacia ◽  
Acer Platanoides ◽  
Robinia Pseudoacacia L

Наведено результати досліджень активності ферментів інвертази (характеризує біологічну активність ґрунту, вміст гумусу, родючість ґрунтів) та уреази (ферменту азотного обміну) у ґрунтах штучних лісових насаджень Robinia pseudoacacia L., Betula pendula Rosh., Quercus robur L., Acer platanoides L. на рекультивованих ділянках Західного Донбасу. Показано сезонну динаміку активності ґрунтів залежно від типу біогеоценозу. 

Growth and management of mixed Pinus sylvestris - Quercus robur stands in Flanders, Belgium

1993 ◽  
Vol 58 ◽  
Author(s):  
D. Maddelein ◽  
J. Neirynck ◽  
G. Sioen
Keyword(s):  
Pinus Sylvestris ◽  
Natural Regeneration ◽  
Quercus Robur ◽  
Good Growth ◽  
Pedunculate Oak ◽  
Selection System ◽  
Management Options ◽  
Stand Management ◽  
Pine Stands

Mature  Scots pine (Pinus sylvestris  L.) stands are dominating large parts of the Flemish forest area. Broadleaved  species regenerate spontaneously under this pine canopy. This study studied  the growth and development of two planted pine stands with an older natural  regeneration, dominated by pedunculate oak (Quercus  robur L.), and discussed management options for  similar stands.     The results indicated a rather good growth of the stands, with current  annual increments of 5 m3.ha-1.yr-1. The pine overstorey is growing into valuable sawwood  dimensions, while the broadleaved understorey slowly grows into the  upperstorey. The quality of the regeneration is moderate but can be improved  by silvicultural measurements (pruning, early selection).     In both stands, an interesting (timber production, nature conservation)  admixture of secondary tree species is present in the regeneration. Stand  management is evolving from the classical clearcut system towards a  combination of a type of selection and group selection system.

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