Ukrainian Journal of Forest and Wood Science最新文献

{"title":"Results of experimental studies on the strength of adhesive-bonded joints of thermally modified ash wood","authors":"Halyna Datskiv, Bogdan Kshyvetskyi","doi":"10.31548/forest/1.2023.27","DOIUrl":"https://doi.org/10.31548/forest/1.2023.27","url":null,"abstract":"It is necessary to ensure the protection of the adhesive-bonded wood structures from the effects of temperature and humidity loads to improve their performance characteristics and increase the service life – this determines the relevance of this study. The purpose of the study is to examine, using a long-term method, the strength of thermoplastic adhesive-bonded joints of thermally modified ash wood and unmodified pine wood. The data were subjected to statistical processing and analysis. The experimental samples for the studies were prepared according to the proposed methodology in production conditions according to the existing technological process. The studies continued for two years, with periodic inspection of the samples and recording of the changes that occurred during the experiments. Regularly, every three months of the study, part of the samples was removed from the stand and tested to determine the change in strength. Methods were selected and described for conducting long-term experimental studies to determine the strength of adhesive joints of thermally modified ash wood and unmodified pine wood glued with polyvinyl acetate-based adhesives with durability class D4. Based on the study results, it was identified that the average strength of control samples of the thermally modified ash wood and unmodified pine wood was 7.12 MPa, and after two years of long-term testing, it decreased to 5.13 MPa (27.9%). In addition, it was identified that the operation of such adhesive-bonded joints in natural conditions depends on the cyclic temperature-and-humidity load. Namely, in the summer-autumn period, the strength decreases, while in the winter-spring period, it remains unchanged, and in some cases, increases. The obtained results are of great practical importance, since such adhesive-bonded structures, can be used for the manufacture of joinery and building products, which will improve their performance characteristics and increase their service life","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130506544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Terminological basis and perspectives of the use of non-timber products of the forests of Ukraine","authors":"S. Píšová, O. Tokarieva, Viacheslav Levchenko","doi":"10.31548/forest/1.2023.124","DOIUrl":"https://doi.org/10.31548/forest/1.2023.124","url":null,"abstract":"In the forests of Ukraine, forestry should be carried out on the principles of continuous and rational use of forests through integrated usage of their resources. Thus, there is a need to distinguish and correctly understand the forestry terms. To harmonize terminology, relevant regulations, as well as Ukrainian and foreign literature, were examined. General scientific theoretical methods – analysis and synthesis – were applied to work with information sources. The paper substantiats the employment and understanding of terminology related to the usage of forest resources. The definition and interpretation of the terms “secondary forest use”, “non-tree forest resources”, “non-timber forest resources” in current legislative and regulatory acts, the explanatory dictionary of the Ukrainian language, the state standard of Ukraine, the Ukrainian encyclopedia of forestry, Ukrainian and foreign forestry literature were summarized. The authors proposes to divide forest resources into woody, non-tree, and non-timber ones, followed by coordination of such classification among forestry scientists and practitioners. The largest volumes of harvesting among secondary forest materials and secondary forest uses for 2010-2020 were established. The distribution of income received according to types of non-timber products of the forest and in the context of regional departments of forestry and hunting for 2021 was analysed. The paper presents the types of wild fruit, medicinal plants and mushrooms common in Ukraine. Promising species for plantation cultivation were proposed. Areas of obtaining added income from the sale of non-timber products of forests were generalized. The analysis and prospects of using non-timber forest products, which can serve as a theoretical and practical basis for sustainable management of multifunctional forestry in Ukraine, were presented. The obtained results can be used for harvesting non-timber products of forests, considering the regional characteristics of the country","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121894796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current state of parks in the Sviatoshynskyi district of Kyiv","authors":"Oksana Bahatska, O. Pikhalo, Tetiana Levchenko","doi":"10.31548/forest.13(4).2022.6-15","DOIUrl":"https://doi.org/10.31548/forest.13(4).2022.6-15","url":null,"abstract":"In the issue of Kyiv’s greening strategy, an increase in the number of public parks in each district of the city was noted, but their expediency is not always substantiated. That is why the purpose of the study is to highlight the role of public parks in the urbanised environment and to analyse normative indicators. An analysis of the quantitative indicators of public plantings within the public parks of the Sviatoshynskyi district of Kyiv was carried out. The actual number of public parks, their areas, and the main results of the public park survey have been established. Based on field studies and cartographic materials parks are classified according to visual features. The sizes, areas, shapes, layout, and composition of the plantations at the experimental sites were determined. Classification by functions: transit, recreational, memorial, and by the time of creation. It was established that 70% of the district’s parks are intended for short-term recreation, and the largest number of parks are located along the streets (39% of the total area of the district’s parks). It was determined that the territories of public parks of the Sviatoshynskyi district occupy small areas (from 0.11 to 7.86 ha) and are evenly distributed throughout the district. In terms of shape, parks of a rectangular configuration predominate in the city – 35% by area, and in terms of appearance – parks of a small area (up to 0.5 ha). The composition of plantings is dominated by parks with a preference for deciduous species (40%). It was determined that according to the functional purpose, most of the parks perform the function of short-term recreation, and according to the time of creation, the majority of the parks were established in 2016-2020. The presented classification would allow to systematise the existing territories and developing the classification of the parks of the Sviatoshynskyi district of Kyiv","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125394131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integration of environmental values into the management system of forestry enterprises in accordance with the requirements of forest certification","authors":"O. Pavlishchuk, P. Kravets, A. Сhurilov","doi":"10.31548/forest.13(4).2022.84-95","DOIUrl":"https://doi.org/10.31548/forest.13(4).2022.84-95","url":null,"abstract":"The relevance of the study is conditioned by the importance of proper application of forest certification as a tool for responsible forestry. The lack of integrated approaches and formalities in the implementation of forest certification requirements is unacceptable from the standpoint of the interests of society and the environment. The purpose of the study is to substantiate the theoretical and practical foundations of integrating environmental values as one of the requirements for forest certification under the Forest Stewardship Council, into the management system of forestry enterprises. General and special methods (analysis, synthesis, generalisation, and comparison), and the regulatory framework for forest certification and the quality management standard were used for the research. The paper describes the concept of environmental values in the context of its components. It is proved that system, processbased, adaptive, and risk-oriented approaches to management are the basis for integrating the concept of environmental values into the management system of forestry enterprises. It is determined that the development of processes that cover the requirements of forest certification for environmental values and their documentary support are elements of the mechanism for integrating environmental values into the management system. Such processes are related to: identification of environmental values; determination of the purpose and criteria for making decisions on them; assessment of the impact of economic activities on them; development and implementation of measures for their conservation, maintenance, and protection; monitoring of the state and measures. Procedures, monitoring methods, training programmes, standard accounting and reporting forms are components of documenting these processes. The study results will be useful for improving the management system of forestry enterprises in accordance with the requirements of forest certification in terms of planning, organisation, monitoring, and control. The implementation of the tools and practical steps outlined for this purpose will contribute to the growth of efficiency of enterprises and their competitiveness in markets, access to which is determined by the requirements for the sustainability of the origin of forest products","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114509968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimisation of substrate composition and level of mineral nutrition as the basis of improving the production of decorative plants in container culture","authors":"Victor Maurer, Andrii Pinchuk","doi":"10.31548/forest.13(4).2022.64-73","DOIUrl":"https://doi.org/10.31548/forest.13(4).2022.64-73","url":null,"abstract":"The current significant increase in the volume of growing ornamental seedlings in container culture in tree nurseries is conditioned by a number of significant advantages of planting material with an uninjured root system. At the same time, the agricultural technology for the production of such seedlings in container culture is much more complicated, compared to the traditional one. First of all, this is conditioned by growing them in a space limited by the size of containers and using an artificially prepared substrate. The purpose of the study was to conduct biotesting of three modifications of the substrate composition for the container culture of Spiraea japonica ‘Goldflame’, Tamarix tetrandra Pall. ex Bieb., Forsythia ovate Nakai and different doses of starter fertilisers “Nitroamofoska” and “Plantacote”. The study used both general scientific methods of analysis, synthesis, and active experimentation, as well as applied research methods such as biometric, phenological, soil, and agrochemical. Studies have established the presence of species-specific reactions of experimental plants with different fastidiousness to soil conditions, to the composition of the substrate and the types and doses of starter fertiliser used in container culture. A conclusion was made regarding the increase in the profitability of their cultivation due to the use of cheaper local components for the preparation of the substrate. The conducted studies showed a number of advantages of using organo-mineral slow-release fertilisers in container culture as a starter, in particular, “Plantacote” at a dose of 2.5-5.0 g∙l-1. That the mass production of decorative planting material with a closed root system should be preceded by research on establishing species-specific reactions of cultivated plants to cultivation conditions, which are the basis for optimising the composition of the substrate and the level of mineral nutrition of cultivated plants in order to increase the efficiency of the production of decorative seedlings in container culture. The obtained results will be useful for producers of planting material and the scientific community working towards the development of container culture of ornamental plants","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114900020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dendroflora in spatial planning compositions of children’s squares in Vyshhorod town","authors":"O. Zibtseva, Olena Troshkina, Olena Olkho","doi":"10.31548/forest.13(4).2022.30-40","DOIUrl":"https://doi.org/10.31548/forest.13(4).2022.30-40","url":null,"abstract":"Various groups of urban residents, including children, need to ensure a high-quality environment. One of the important features of urban plantings is their biodiversity, which is often low in the territories of children’s facilities. The purpose of the study is to identify spatial planning solutions and assess the species composition of tree plantations on the territory of six newly created children’s parks of the small historical city of Vyshhorod, Kyiv Oblast, which is located near the capital and is marked by positive demographic dynamics. The initial data were obtained as a result of the authors’ inventory survey of vegetation in these parks. The spatial planning composition of the dendroflora of these parks is also analysed using a visual method. Based on the obtained data, the level of biodiversity of tree stands in parks under study was estimated: the available number of taxa, Menhinick’s richness and diversity index, and the Berger-Parker abundance index were compared. On the territory of these parks, a total of 70 taxa of woody and shrubby plants were identified, among which introduced species predominate. More than half of the identified taxa are found only in one of the parks. The most common types represented on the territory of most children’s parks are the following: Spiraea vanhouttei, Juglans regia, Physocarpus opulifolius. Cluster analysis revealed groups of parks with a similar assortment of woody plants, and, accordingly, similar biodiversity indicators. The relationship between the assortment of plants and the general spatial solution of parks is traced. It was concluded that the selection of the species composition of woody plants for children’s parks should be more thorough, and it is also advisable not to exceed the recommended 10% share of one species in the composition of plantings. The use of “thorny” species that are not recommended for children’s territories is quite balanced and rational. The use of the findings in urban planning would help create a multifunctional eco-balanced children’s space and increase the sustainability of urban ecosystems","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"45 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126758037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural afforestation of the fallows in the Western Polissya","authors":"I. Kimeichuk, Oleksandr Kaidyk","doi":"10.31548/forest.13(4).2022.41-51","DOIUrl":"https://doi.org/10.31548/forest.13(4).2022.41-51","url":null,"abstract":"One of the main tasks of forestry in Ukraine is to increase forest cover – it can be partially solved by the development of low-productive agricultural land, in particular, fallows, on which self-sown forest is already growing or just appearing, since the expanded reproduction of forests is relevant for Ukraine, considering ecological and forestry transformations of fallows conditioned by their natural afforestation. The main goal was to evaluate the success of natural renewal on fallows in the region under study, to identify factors influencing the course of natural afforestation and tree conservation depending on the location of the plot relative to the forest border and the distance to it. General scientific, forestry and taxation, reconnaissance, forestry and ecological, and geobotanics methods were used to investigate natural renewal at fallows. Office study of materials was carried out using mathematical statistics. As a result of a detailed investigation of the natural settlement of forest tree species on abandoned fields of Western Polissya, it was found that in coniferous and subor conditions, the plots are mostly wooded with pine, as well as birch and alder. In most of the test plots, the renewal was satisfactory (according to the Nesterov scale). The number of self-seeding of tree species in the test plots was not uniform and ranged from 1.2-13.1 thous. units/ha depending on forest site types, species composition, undergrowth size, the abundance of living ground cover, and the degree of sodding of the site and clogging with weeds and grass, which ranged from 20 to 90%. The occurrence of natural renewal is also not uniform: from 19 to 100%. The spread of tree species occurred mainly from forest stands located to the west, northwest, and north of the fallows. The findings of the study are extremely important for employees of the forest industry, and can also be used by territorial communities in improving land management, establishing landscape parks, etc.","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115910208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Height-diameter relationships and stem volume equations in young and middle-aged forest stands of Ukraine","authors":"V. Myroniuk, Viktor Svynchuk, A. Bilous, Serhii Kashpor, O. Lesnik","doi":"10.31548/forest.13(4).2022.74-83","DOIUrl":"https://doi.org/10.31548/forest.13(4).2022.74-83","url":null,"abstract":"Height-diameter (h-d) relationships in forest stands are commonly used in various scientific and practical forestry applications. Accurate h-d models combined with tree stem volume equations are recognised to be effective in growing stock volume estimation. The purpose of the study was threefold: 1) development of a set of mathematical models of the h-d relationship in young and middle-aged forest stands for ten forest-forming species in Ukraine; 2) modelling stem volume in above mentioned forest stands; 3) comparison of established mathematical models with corresponding ones for premature, mature, and overmature forest stands. The study was based on permanent and temporal sample plots data (about 600) established in forest stands during 1950s-2020s within the most forested regions of Ukraine (Polissia, Forest-Steppe, Carpathians). In total, about 10,000 sample trees were measured on the sample plots to accurately estimate their stem volume outside bark. The h-d models demonstrated very similar relationships between stem heights and diameters for most of our species except for spruce and fir in mountain Carpathian forests where the steeper h-d curves were obtained. The study revealed that birch and hornbeam tree stems had the lowest volumes among surveyed species. The results also indicated that tree species tend to have higher volumes (up to 7% for coniferous, and up 10% for aspen and birch forests) in young and middle-aged forest sands than in older ones. For the other species, a statistically significant difference between stem volumes of trees of different ages was not observed. The developed mathematical models can complement the corresponding models for older groups of forest stands since they revealed an important aspect of relationships between the key tree stem parameters. These models are also applicable for a more precise stem volume estimation during thinning operations in the young and middle-aged forests in Ukraine","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117123280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Galic acid as a non-specific regulator of phenol synthesis and growth of regenerate plants of Corylus avellana (L.) H. Karst. and Salix alba L. in vitro","authors":"A. Likhanov, A. Klyuvadenko, O. Subin, Mariia Shevchuk, Mariia Dubchak","doi":"10.31548/forest.13(4).2022.52-63","DOIUrl":"https://doi.org/10.31548/forest.13(4).2022.52-63","url":null,"abstract":"Gallic acid is found in plant tissues in free form, as well as in the composition of complex esters and hydrolysed tannins. These phenolic compounds have significant antioxidant activity and protect plant cells from damage by free radicals. In the conditions of stress that occurs during the introduction of plants into in vitro culture, the vast majority of explants are characterised by an intensive synthesis of phenols, which quickly oxidise, polymerise, block the explants’ nutrition pathways, and cause tissue necrosis. The addition of gallic acid in millimolar concentrations to the nutrient medium reduces the risk of autointoxication of tissues by secondary metabolic products. The purpose of this study was to investigate the effect of exogenous gallic acid on organogenesis and phenolic synthesis of Salix alba and Corylus avellana plants in vitro. For this purpose, the study used methods of tissue and organ culture in vitro, spectrophotometric determination of total phenols and flavonoids in leaves, methods of dispersion and nonparametric analysis. It was established that gallic acid at a concentration of 1 mmol·l-1 in the composition of the DKW nutrient medium caused the awakening of dormant buds, stimulated the growth of shoots, and also promoted the branching of stems, the development and growth of lateral roots of Salix alba in vitro. It also inhibited the synthesis of phenols in Corylus avellana plants of the varieties ‘Tonda Romana’, ‘Tonda Gentile Dele Lange’, ‘Barcelona’, while contributing to an increase in the content of phenolic compounds in the leaves of the varieties ‘Tonda Di Giffoni’, ‘Mortarella’, and ‘Epsilon’. It was established that the varieties recommended for fruiting have a higher content of phenolic compounds (‘Tonda Gentile Dele Lange’ and ‘Tonda Di Giffoni’) compared to pollinator varieties (‘Mortarella’). Therefore, exogenous gallic acid at a concentration of 1 mmol·l-1 has the properties of a non-specific regulator of phenol synthesis in regenerating plants of hazel (Corylus avellana), which is relevant for plants with a high content of phenols, especially at the stage of their introduction into in vitro culture","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127934873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peculiarities of formation of the forest litter of the water protection pine plantations in the Ukrainian interflue of the Dnipro and Desna rivers","authors":"Mezzalira Giustino, V. Yukhnovskyi, Yu. S. Urliuk, Fedir Brovko, A. Rasenchuk","doi":"10.31548/forest.13(3).2022.50-60","DOIUrl":"https://doi.org/10.31548/forest.13(3).2022.50-60","url":null,"abstract":"The effective performance of ameliorative functions by water protection plantations is largely determined by the development of the forest litter, its structure, capacity, quality composition, and degree of mineralization. Therefore, the aim of the study was to identify the features of the formation of the forest litter of pine plantations of the Ukrainian interfluves of the Dnipro and Desna. The study of forest litter was carried out on the accounting sites in all age groups of plantations, in which 22 test plots were laid. Litter samples were taken in between rows and directly in rows of forest plantations. During the analysis of the qualitative composition of the forest litter of young plantations, the dominance of the upper horizon of the inactive fraction, which consisted mainly of needles and branches, was revealed. Here, the share of inactive litter in the conditions of moist poor pine site and moist relatively poor pine site was 8.13 t/ha or 85.1% and 12.54 t/ha or 92.1%, respectively. A large amount of dust, which forms the active fraction, was recorded in the lower horizon. Its stocks were 5.3-5.6 times higher than the reserves of inactive litter. In general, in young pine forests in the conditions of moist poor pine site, the stock of inactive litter is 15.10 t/ha (28.1%), while its presence in of moist poor pine site is 17.91 t/ha, 36.5%. In middle-aged pine forests, the share of the active litter fraction increases, which is a consequence of the active action of its decomposition processes. The share of active litter is 79.3% or 155.29 t/ha in mature stands of the conditions of moist poor pine site. This is evidence of the intensification of the processes of mineralization and activation of the circulation of substances. Three horizons are clearly distinguished in the litter of plantations of older age groups, with a strong connection between them. The lower layer of the forest litter of water conservation plantations is permeated with physiologically active roots, which forms its dense type of structure. Under such conditions, during the separation of the lower layer of litter from the upper one, it does not fall apart and its structure remains dense. The presence of strongly intertwined physiologically active roots in the third horizon of the litter is evidence of the activation of microbiological processes, which are also accelerated by the interception of moisture and the accumulation of humus particles of the soil by the lower layers of the forest litter. To prevent the development of flood processes, the effective performance of water regulation and water purification functions, it is recommended to create water conservation plantations with the formation of the identified type of forest litter","PeriodicalId":425527,"journal":{"name":"Ukrainian Journal of Forest and Wood Science","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128394690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}