scholarly journals FEATURES OF THE GROWTH OF MODAL ARTIFICIAL OAK STANDS OF THE LEFT-BANK FOREST-STEPPE ZONE AND USING THE FOREST GROWTH POTENTIAL

2020 ◽  
Vol 88 (3) ◽  
pp. 106-115
Author(s):  
L. Lunachevskyy ◽  
◽  
M. Rumіantsev ◽  
Author(s):  
V. P. Tkach ◽  
O. V. Kobets ◽  
M. G. Rumiantsev

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.


2013 ◽  
Vol 17 ◽  
pp. 148-158
Author(s):  
O. V. Kuts ◽  
N. V. Pomaz

The use of EM-technology (soil tillage, treatment of seeds, seedlings and plants during the growing season with EM- preparation) on the left-bank Forest-Steppe zone of Ukraine under irrigation results in improvement of eggplant marketable yield on 2.6 t/ha or 18 % as comparing to control, increase of nutrients content and reduction of nitrate levels in fetus. Application of EM-technology ensures profit of 4.2 thousand UAH/ha, profitability within 92 % and has bioenergetic efficiency factor 2.99.


2011 ◽  
Vol 72 (2) ◽  
pp. 115-119
Author(s):  
Svitlana Raspopina ◽  
Ihor Neyko ◽  
Sergii Boiko

Wpływ skały macierzystej na produkcyjność lasów dębowych lasostepu lewobrzeżnej Ukrainy


Author(s):  
Nina Gural-Sverlova

The taxonomic and ecological composition of the autochthonous land mollusc fauna in different parts of the plain Ukraine was analyzed on the basis of the personal data, collection materials of the State Museum of Natural History of the NAS of Ukraine in Lviv as well as numerous literature sources. Excluding representatives of the genus Helicopsis, the taxonomy and species composition of which in the territory of Ukraine still require clarification, and the steppe part of the Crimean peninsula, in four landscape zones of Ukraine, currently, a total of 109 species of land molluscs, which are autochthonous for at least part of the analyzed territory, are registered. The maximum species diversity (103 species and 2 representatives of the genus Helicopsis) is recorded in the zone of deciduous forests, followed by the right-bank part of the forest-steppe zone. The smallest number of the autochthonous species of land molluscs was noted for the right-bank part of the steppe zone. Within the Ukrainian Polesie and the forest-steppe zone of Ukraine, the taxonomic diversity of land molluscs decreases from west to east. The number of the registered autochthonous species decreases, respectively, by 1.5 and 1.7 times, and the generic diversity by 1.3 and 1.5 times. In the steppe zone, the main centre of the species diversity is the Donetsk Upland, located in the east of the country. In taxonomic and ecological composition, land mollusc complexes of the right-bank part of the forest-steppe zone are closer to the zone of deciduous forests, in its left-bank part – to the left-bank steppe. In general, the spatial differentiation of land mollusc fauna in the plain territories of Ukraine is more strongly associated not with the boundaries of landscaped zones, but with the location of these territories with respect to the Dnieper bed and with some uplands, where the species diversity of land molluscs of the zone of deciduous forests and forest-steppe zone (Podolian Upland) and the steppe zone (Donetsk Upland) is concentrated.


2020 ◽  
Vol 11 (2) ◽  
pp. 53-65
Author(s):  
Y. Yu. Khan ◽  
О. P. Bala

Sustainable forest management, which based on the balance of ecological, economic and social aspects, requires a continuous updating and developing tools of objective assessment of the current state and further prediction changes of all elements of the forest ecosystem. Currently, questions related to the forecasting in the forestry is very important for actualization the databases in cases when using the continuous forest inventory. Vegetative origin oak stands play an important role in forming natural ecosystems in the Ukrainian forest-steppe zone. They represent 26 percent of all oak stands area, and, therefore, the question related to the growth modelling of biometric indices will be important in the future. The purpose of this research was to develop the growth models based on yield tables for the main biometric indices, such as: mean height, mean diameter, cross-sectional area per 1 ha and growing stock per 1 ha. Growth models for forecasting all specified biometric indices was based on the ratio of biometric index for the year ahead to the same index now taken from the forest growth tables for modal vegetative origin oak stands across dynamical site classes and the geographical location. The description of the obtained results was based on the lognormal density distribution function. The main parameters of mathematical models for the forecasting biometric indices were set using the nonlinear regression function via the IBM SPSS statistics software. Graphical and analytical methods were used for comparing the study results and analysing the obtained data. As a result of the study, the coefficients of the equation were obtained, which with sufficient accuracy describe the studied relations and forecasting the growth of stands according to the main biometric indices in the different age intervals. The deviation of growth modelling results for the main biometric indices, exhibit acceptable levels when compared to yield tables for vegetative origin Oak stands of the Ukrainian forest-steppe zone during all forecasting period and in percentage values are less than 1%, but for forecasting the stock per 1 ha for young forests the deviation can approach 4%. The forecasting period should preferably not exceed 10-15 years.


Author(s):  
V. P. Tkach ◽  
V. A. Luk’yanets ◽  
O. M. Tarnopylska ◽  
M. G. Rumyantsev

The article reports new results on the reconstruction of the noncommercial weakened coppice oak stands in the Left-bank Forest-Steppe zone, Ukraine. For the first time, a technology of reconstruction of coppice stands into the mixed seed natural or planted ones is proposed through regeneration felling with the elements of even gradual, group successive and strip gradual felling with a continuous cutting of 25 m width strips. The use of the technologies that combine regeneration felling, selective sanitary felling and thinning in conjunction with silvicultural activities will allow to form mixed seed natural or planted stands of different ages from noncommercial weakened coppice oak forests and significantly increase their productivity and sustainability.


Author(s):  
Valeriy Berezutskiy

Introduction. The relevant objective of the research of the Sarmatians in the Don forest-steppe zone is the study of the Late Sarmatian period. It is aggravated both by the lack of the available material and by the absence of Late Sarmatian period burial grounds up until recent years. The excavations of Late Sarmatian grave mounds near Berezovka village in the left bank area of the Middle Don provide the opportunity to challenge the lack of knowledge concerning this period of the Sarmatian history. Methods. The method of analogy dating, the typological and anthropological methods were applied while working on the burial samples of the Late Sarmatian culture found in Berezovka proximity. Analysis. The analyzed objects are two Late Sarmatian burials hidden under the separate grave mounds in the riverside graves. One of them belongs to a 18–20-year-old woman, the other one is associated with a 25–30-year-old man. The burial materials can be dated back to the middle or the second half of the 2nd century AD. Results. The assigning of the considered burials to the Late Sarmatian culture of the middle or the second half of the 2nd century AD sets up possible connection between these grave mounds and the graves preceding the Hunnic invasion (grave mounds 8 and 9 in Berezovka burial sites). The chronological time interval between them is approximately 150 years. Allegedly, the study of the new grave mounds can replenish the chronological void.


2018 ◽  
Vol 7 (2) ◽  
pp. 94-102
Author(s):  
Sergey Ivanovich Pavlov ◽  
Andrey Stepanovich Yaitsky

The author studied winter and spring wheat (Trticum) development dynamics in the Volga Region left-bank forest-steppe zone during 1974-2010 in natural conditions and gardens on the Samara Region cereal crops fields, as well as generation cycles of 6 local species of leaf beetles, with 1-year development, 5 of which do a lot of harm to wheat ( Oulema melanopus L., Phyllotreta vittula Redt., Chaetocnema aridula Gyll., Chaetocnema hortensis Geoffr., Hispella atra L.) and 1 ( Cassida rubiginosa Mll.) is the consumer of a weed plant - Cirsium arvense (L.) Scop.). The author also studied leaf beetles density dynamics and their localization on grain crops of different age. The author studied cereal crops agrocoenoses microclimate under different weather conditions, different plants vegetation intensity at different times of the day. The author also studied major stages of beetles harmful species generation and the timing of their implementation. The paper contains an analysis of the extent and timing of different harmfulness of leaf beetles; the economic value of their separate types. The author surveyed the conditions preferred by the pests of wheat as well as the factors depressing their larval stage and considered the cases of beetles and larvae massive aggregations formation and beetles migration into more comfortable areas. The author comes to the conclusion of the extraordinary plasticity and adaptability of the leaf to the microclimatic conditions of the habitat.


Author(s):  
Л. Д. Глущенко ◽  
Р. В. Олепір ◽  
О. І. Лень ◽  
В. М. Вакуленко ◽  
Б. Б. Котвіцький

За останні роки на Полтавщині в погодних умовах суттєво змінилися температурний і водний ре-жими. Протягом веґетаційного періоду 2008–2012 років спостерігалося підвищення середньомісячної температури на 1,8 0С, що більше на 13,1 % від середньої багаторічної норми та зменшення кіль-кості опадів на 72,5 мм, або на 23,2 %. Важлива роль у підвищенні продуктивності сільськогоспо-дарських культур належить добривам. В умовах значного подорожчання енерґоносіїв та агрохімі-катів позакореневі підживлення комплексними водорозчинними добривами стають особливо ак-туальними. Застосування цього агрозаходу в умо-вах Лівобережного Лісостепу України за нестабі-льного зволоження дає можливість підвищити продуктивність пшениці озимої на 25,8 %, кукуру-дзи зернової на 12,7 %, буряків цукрових на 15,7 % і суттєво поліпшити якість продукції. Temperature and water regimes have changed over the past few years in Poltava in the weather conditions. So during the growing period of 2008–2012, an increase in the average temperature of 1.8 0C, an increase of 13.1% from the average long-term rates and a decrease in rainfall at 72.5 mm, or 23.2% was observed. The leading role in increasing the productivity of crops belongs to fertilizers. With the significant rise in price of energy and agrochemicals, foliar feeding by complex water-soluble fertilizers becomes particularly relevant. The use of this agro method in the left-bank forest-steppe zone of Ukraine with not persistent moisture makes it possible to increase the productivity of winter wheat by 25.8%, corn grain by 12.7%, sugar beet by 15.7%, and significantly improve the quality of products.


2021 ◽  
pp. 403-421
Author(s):  
M. N. Tikhomirova ◽  
K. N. Tikhomirov

The issues of fishing among the West Siberian Tatars living on the territory of the Omsk region in the forest-steppe zone on the left bank of the Irtysh River are considered. The authors dwell on the characteristics of the traditional aquatic areas of the XIX — early XXI century, fishing objects, tools and methods of fishing. It is proved that the fishing of the Tatars in these settlements was an auxiliary branch of the economy in the past and present. It was shown that they fished almost all year round, mainly on lakes, where the main object of fishing was crucian carp. It is concluded that fishing was more developed among residents of settlements in the area of the village of Yalankul. It is shown that the Tatars of the villages in the area of the Ulenkul village are now less engaged in it because of the drying up of water bodies, as well as because of the withdrawal of lakes from nature management for transfer to the hunting farm and the reserve. The novelty of the research is seen in filling the gaps in the study of this topic. The authors note that material was collected about the fishing of the population, which previously consisted mainly of Siberian Bukharians and was actually assimilated by the Tatars.


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