scholarly journals AN ANALYSIS OF FOREST GROWTH FEATURES OF LOW-PRODUCTIVE GREY FOREST SANDY SOILS OF UKRAINE WITH REGARD TO THEIR RELEVANCE FOR FOREST CULTIVATION

2019 ◽  
Vol 7 ◽  
pp. 943-948
Author(s):  
Peter Kijovský ◽  
Anatoliy Lisnyak ◽  
Kateryna Utkina ◽  
Alexey Kraynukov ◽  
Eva Michaeli
Keyword(s):  
Sandy Soils ◽  
General Characteristic ◽  
Forest Growth ◽  
Forest Steppe ◽  
Forest Site ◽  
Soil Quality Indicators ◽  
Physical Clay ◽  
Natural Zones ◽  
Physico Chemical ◽  
Growth Features

A comparative analysis of the forest growth features of low-productive grey forest sandy soils of the Polissia, the Forest-Steppe and the Northern Steppe of Ukraine was performed. Although grey forest soils from different natural zones are distinguished in the genesis of their soil rocks, as well as typical and zonal belongings, at the same time they are united by an important general characteristic, light texture, determining the similarity of physical, physico-chemical and agrochemical indicators and, in general, forest site capacity. A package of markers to assess the forest site capacity of sandy soils (pine habitats) with such soil quality indicators as the content of physical clay, the coarseness of the humified layer of soil profile and K2O content was revealed.

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 White poplar (Populus alba L.) stands in Ukraine: the current state, growth specificities and prospects of using for forest plantations

2021 ◽  
Vol 48 (1) ◽  
pp. 63-72
Author(s):  
Natalia Vysotska ◽  
Maksym Rumiantsev ◽  
Oleksii Kobets
Keyword(s):  
Age Distribution ◽  
Forest Steppe ◽  
Forest Site ◽  
Productive Capacity ◽  
Plantation Forest ◽  
White Poplar ◽  
Forest Zone ◽  
Natural Zones ◽  
Current State ◽  
State Growth

Abstract The aim of the study was to assess the current state and evaluate the productivity of white poplar stands by natural zones within Ukraine and to define the prospects for their use for plantation forest cultivation. The objects of the study were white poplar stands in Ukrainian forests grown on the area of more than 7,600 hectares in various natural zones, namely Polissya (forest zone in Ukraine), Forest-Steppe, and Steppe. The study was carried out based on the analysis of forest inventory data (Ukrainian forest fund database) containing given stand characteristics such as origin, age, diameter, height, type of forest site conditions, etc. The characteristics were estimated by grouping the plots by age. The growth specificities (dynamics of the main mensuration characteristics) and the productive capacity of the white poplar stands were analyzed based on the developed tables. It was found that white poplar stands are mainly concentrated in Steppe and Forest-Steppe in Ukraine. The stands are of coppice or artificial origin; they grow in moist fairly fertile, fresh fairly fertile and moist fertile sites. The age distribution of the white poplar stands is severely imbalanced due to a significant predominance of stands aged over 40 years in all natural zones within Ukraine. More productive are the white poplar stands growing within Polissya and Forest-Steppe. The developed growth and productivity tables should be used when planning and prioritizing the relevant forestry interventions in white poplar stands.

scholarly journals Biological and biochemical properties in evaluation of forest soil quality

2014 ◽  
Vol 56 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Ewa Błońska ◽  
Jarosław Lasota
Keyword(s):  
Enzyme Activity ◽  
Forest Soil ◽  
Soil Quality ◽  
Soil Ph ◽  
Chemical Properties ◽  
Biochemical Properties ◽  
Essential Elements ◽  
Forest Site ◽  
Physico Chemical ◽  
Density And Biomass

Abstract The aim of this study was to assess the possibility of using biological and biochemical parameters in the evaluation of forest soil quality and changes caused by land use. The study attempted to determine a relationship between the enzymatic activity of soil, the number of earthworms and soil physico-chemical properties. The study was carried out in central Poland in adjoining Forest Districts (Przedbórz and Smardzewice). In soil samples taken from 12 research plots, basic physico-chemical properties, enzyme activity (dehydrogenase, urease) and density and biomass of earthworms were examined. Enzyme activity showed a large diversity within the forest site types studied. The correlations between the activity of the enzymes studied and C/N ratio indicated considerable importance of these enzymes in metabolism of essential elements of organic matter of forest soils. Urease and dehydrogenase activity and earthworm number showed susceptibility to soil pH, which confirmed relationships between enzyme activity and abundance of earthworms and soil pH in H2O and KCl.

scholarly journals Effects of deforestation on the properties of soil of Sal forests in Bangladesh

1970 ◽  
Vol 19 (1) ◽  
pp. 63-72 ◽  
Author(s):  
Mohammad Zabed Hossain ◽  
Mihir Lal Saha ◽  
Chaman Binta Aziz ◽  
Sirajul Hoque
Keyword(s):  
Organic Carbon ◽  
Moisture Content ◽  
Soil Properties ◽  
Chemical Properties ◽  
Natural Forest ◽  
Grass Species ◽  
Forest Site ◽  
Bacterial Colony ◽  
Physico Chemical ◽  
Sal Forest

This study examined the effect of deforestation on the soil properties (physico-chemical and bacterial) of the Sal (Shorea robusta Roxb. Ex Gaertn.) forests in Bangladesh. Physico-chemical properties and the bacterial colony counts of soil were studied by comparing a natural Sal forest site with deforested and planted with Menjium site, deforested and planted with Mahogoni site, as well as deforested but not planted but covered with profuse growth of Axonopus compressus grass species site. Moisture content was significantly lower in the deforested and planted with Menjium site and deforested and planted with Mahogoni site than the natural forest site and the deforested but not planted site. Total organic carbon, total nitrogen and available nitrogen contents were significantly lower in the natural forest site. Significantly higher number of bacterial colony and higher organic carbon and moisture contents were found in the deforested but not planted site indicating that both organic carbon and moisture content were important for microbial growth. The present study clearly showed that deforestation significantly altered the soil physico-chemical and bacterial communities of the Sal forests. It was also revealed that plantation with different exotic plants were found to be different in influencing soil properties. Key words: Bacterial colony; Deforestation effects; Sal forest; Soil physico-chemical properties DOI: http://dx.doi.org/10.3329/dujbs.v19i1.8945 DUJBS 2010; 19(1): 63-72

Organic Matter of Cultural Layers as a Material for Radiocarbon Dating

Radiocarbon ◽  
2017 ◽  
Vol 59 (6) ◽  
pp. 1931-1944 ◽  
Author(s):  
E Zazovskaya ◽  
V Shishkov ◽  
A Dolgikh ◽  
A Alexndrovskiy ◽  
V Skripkin ◽  
...  
Keyword(s):  
Organic Matter ◽  
Southern Taiga ◽  
Archaeological Sites ◽  
Forest Steppe ◽  
Human Occupation ◽  
Natural Zones ◽  
European Part Of Russia ◽  
Cultural Layers ◽  
Closed Systems ◽  
Physical Stabilization

ABSTRACTThis article focuses on radiocarbon (14C) dating of the organic matter (OM) of natural-anthropogenic objects—the cultural layers (CLs) of archaeological sites. Using examples from three ancient sites located within the European part of Russia, in southern taiga and forest-steppe natural zones, we demonstrate approaches to the interpretation of 14C dating of OM derived from the organomineral material of the CLs studied. We use the term “archaeological humus” as defined as the OM formed within the CL from “anthropogenic matter” (i.e., organic residues that were produced during the past human occupation of the site) without or with negligible contribution of OM inherited from pre-anthropogenic stages of pedogenesis. The archaeological humus is formed within closed or semi-closed systems by the processes of humification and physical stabilization of OM. The use of hierarchical (from macro- to submicro-) morphological investigations at one of the sites (Gnezdovo) combined with 14C dating allowed conclusions to be drawn about the age of formation of different OM components in CLs.

scholarly journals Incidence of ash dieback in the Left-Bank Forest-Steppe depending on stand characteristics

2020 ◽  
pp. 157-164
Author(s):  
V. L. Meshkova ◽  
V. L. Borysova
Keyword(s):  
Stocking Density ◽  
Site Index ◽  
Stand Age ◽  
Forest Steppe ◽  
Forest Site ◽  
Left Bank ◽  
Site Conditions ◽  
Ash Dieback ◽  
European Ash ◽  
Stand Characteristics

The incidence of ash dieback in the forest-steppe part of Sumy and Kharkiv Regions was analysed taking into account the type of forest site conditions, the stand age, relative stocking density, site index class and the proportion of European ash in the stand composition. Ash dieback is quite widespread in inspected stands of the Left-Bank Forest-Steppe of Sumy and Kharkiv Regions. The disease spreads similarly in natural and artificial stands. It was more often revealed in the fresh fertile forest site conditions, however, such forest site conditions are the most spread and the most favourable for European ash. It was found that ash dieback incidence tends to grow with a stand aging and lasts up to the stand’s age of 80. It can be explained by the development of stem and collar rots which occur later. Ash dieback incidence is the highest in the stands with 40–70 % of ash in their composition, at a relative density of stocking over 0.5 in the stands of different site index classes.

scholarly journals Successions of microbiotic communities of sandy soils in pine stands of different ages in the forest-steppe zone

2021 ◽  
Vol 6 (48) ◽  
pp. 15-15
Author(s):  
Nikolay Nevedrov ◽  
Ekaterina Kuznetsova ◽  
Elena Baidak ◽  
Galina Popova
Keyword(s):  
Scots Pine ◽  
Sandy Soils ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Microbiological Activity ◽  
Hydrothermal Conditions ◽  
Innovative Methods ◽  
Turf Soils ◽  
Response Increase ◽  
Transformation Processes

Peculiarities of transformation processes in soils should be taken into account when developing strategies for their rational use and optimization of their functions. The purpose of the work is to study the successions of soil microbiotic coenosis of azonal Al-Fe-humus sandy soils in pine forest stands of different age in the cities of the Kursk region. Traditional and innovative methods of studying the microbiological activity of soils are used in the work. Al-Fe-humus sandy soils of the forest-steppe covered with 100-year-old stands of Scots pine emit 2.1-2.3 times more CO2 than Al-Fe-humus sandy soils under 25 - and 70-year-old stands of pine and 1.5 times more than similar soils under herbaceous phytocenoses. It has been established that stands of Scots pine during 100 years of vegetation lead to significant changes in the basic properties of soils, changes in response, increase in podzolic process, changes in hydrothermal conditions, as well as increase in the biomass of the main groups of soil microorganisms (up to 38.1 times). Keywords: MICROMYCETES, ACTINOMYCETES, SANDY PODZOLS, GRAY HUMUS (TURF) SOILS, CO2 EMISSION, MICROBIOLOGICAL ACTIVITY OF SOILS

scholarly journals Age structure of European ash (Fraxinus excelsior L.) forests in the Left- Bank Forest-Steppe of Ukraine

2020 ◽  
pp. 163-173
Author(s):  
V. L. Meshkova ◽  
V. L. Borysova
Keyword(s):  
Age Structure ◽  
Site Index ◽  
Forest Damage ◽  
Forest Composition ◽  
Forest Steppe ◽  
Forest Site ◽  
Left Bank ◽  
Age Class ◽  
Forest Enterprises ◽  
European Ash

The age structure of European ash stands in the forest fund of ten forest enterprises from Sumy, Kharkiv and Poltava regions was analyzed considering forest site conditions, stand origin, site index and ash proportion in the forest composition. The average age of ash stands is 68 years for the Left-Bank Forest-Steppe. On average from 46.1 % to 81.6% of European ash stands survive up to the V age class. The average age of ash stands is the highest in the forest-steppe part of Sumy Region in D2 and D3, in Kharkiv Region in D1, and in Poltava Region in C2 and C3. The average age is the highest (75 years) in artificial seed stands in Kharkiv Region, in natural seed (86 years) and vegetative (77 years) origin in Sumy Region. The survival of pure and almost pure ash stands is the highest in Kharkiv Region and the lowest in Poltava Region. In the legislatively adopted maturity age (VIII age class) survival of European ash with its proportion of 80–100 % is 26.5 %, 13.1 % and 3.2 % in Kharkiv, Sumy and Poltava Regions respectively. Correction of the main felling age in forests that are possible for exploitation is suggested considering the possible loss of timber quality as a result of forest damage by different causes.

scholarly journals CHARACTERISTICS OF FLORA IN SAMARA ZAVOLZHIE NEPOTISTIC SPECTRUM

2015 ◽  
Vol 4 (2) ◽  
pp. 86-89
Author(s):  
Anastasiy Viktorovna Ivanova ◽  
Natalia Viktorovna Kostina
Keyword(s):  
Climatic Factors ◽  
Volga Basin ◽  
Forest Steppe ◽  
Taxonomic Structure ◽  
Natural Zones ◽  
Number Of Species ◽  
The North ◽  
Ulyanovsk Region ◽  
The Republic ◽  
Families First

It is known that the flora reacts on changing of composition climatic factors. Changing the composition of the head of the nepotistic spectrum, which is determined by the type of flora (first triada). Samara Region is located in Fab-zone, which in the territory of the Volga basin covers Saratov, Samara, Ulyanovsk region and the Republic of Tatarstan. In the north-western part of the Volga basin it gradually becomes Ros-zone. Changes in the composition of flora has discrete-continuous in nature. Flora in different parts of Fab-zone has its own characteristics, which is reflected in the taxonomic parameters. Most of the Samara Region is located in Zavolzhie, which forms the border of natural zones: forest-steppe and steppe. The natural conditions of these territories have their differences, and, therefore, differ in the parameters flora. The article reveals differences in the taxonomic structure of the flora of the steppe and forest-steppe part of the Samara region. These differences manifest themselves in different share of participation Fabaceae and Rosaceae. In the steppes of Samara Zavolzhja weakened the role of the family Rosaceae and enhanced Chenopodiaceae. Taxonomic analysis shows that the composition of the leading families first triad of the spectrum depends on the number of species in the description. The more species, the greater the likelihood that established triad leading families, corresponding to the zone. If the number of species in the description 500, then the leading triads stabilized.

scholarly journals COMPLEX ASSESSMENT OF PERSPECTIVES OF DOUGLAS FIR (PSEUDOTSUGA MENZIESII (MIRB.) FRANCO) IN FOREST-STEPPE CONDITIONS OF UKRAINE

2018 ◽  
pp. 73-83
Author(s):  
O. M. Plotnikova
Keyword(s):  
Pseudotsuga Menziesii ◽  
Integrated Assessment ◽  
Native Species ◽  
Steppe Zone ◽  
Climatic Conditions ◽  
Douglas Fir ◽  
Annual Rainfall ◽  
Forest Steppe ◽  
Forest Site ◽  
Stem Quality

The results of the integrated assessment of prospects for use of Douglas fir (Pseudotsuga Menziesii (Mirb.) Franco) in botanical gardens and arboretums in five regions in the forest-steppe zone of Ukraine are presented. In most cases, there was a fresh fertile forest site type, and in one, there was a dry fertile site. The indicators of growth, stem quality, available seed production and self-seedlings were determined. The comparison was realized with the native species, English oak, which is traditionally grown in the regions in given forest conditions. According to the results of the integrated assessment, Douglas fir in most cases was noted a perspective species in the Ukrainian forest-steppe zone and can be used for the creation of forest plantations, protective stands, and landscaping. The climatic conditions for the regions of the study were different in the average annual rainfall and the Selyaninov’s hydrothermal coefficient.

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