STOCHASTIC MODELING OF THE INFLUENCE ОF PROTECTIVE FOREST BELTS. THE СAUCHY DISTRIBUTION

Author(s):  
A.N. SALUGIN ◽  
◽  
A.V. KULIK ◽  
A.I. UZOLIN ◽  
◽  
...  
2019 ◽  
Vol 89 (10) ◽  
pp. 1044-1051
Author(s):  
Aleksandr S. Rulev ◽  
Anna M. Pugacheva

From acceptance of the 1948 Plan of Field-Protective Afforestation to the present (2019), this article considers the new agroforestry paradigms protracted formation. Scientific achievements from the 1940s, introduced into practice, served as the basis for decisions on natures global transformation. Pilot facilities from the beginning of the 20th century (the Bogdinsky agroforestry stronghold, the Stone-steppe oasis) still serve as reference objects for agroforest reclamation of territories, with a scientific approach that allows them to function productively today. The plans main idea is to combat drought and desertification of steppe lands, erosion processes, and to prevent sand and dust storms. Creation of 5709 thousand hectares of protective forests, afforestation of 1106 thousand hectares of ravines, fixing and afforestation of sand on an area of 322 thousand hectares, and implementation of many planned activities during a short period locate this plan among other ambitious international projects. The authors draw attention to the time of creation and the volume of plantings of paramount importance, that is, state protective forest belts and protective forest plantations. Understanding the importance of agroforestry for modern agricultural landscapes led to formation of sustainable and durable agroforestry systems in subarid landscapes based on a combination of agricultural and landscape-ecological ideologies. Allegedly, considering terrain ecotopes, three-dimensional evaluation of the agrolandscape and a non-linear approach make it possible to create multifunctional, highly productive agroforestry systems in critical agriculture zones.


Author(s):  
O.N. Baryshnikova ◽  
A.P. Olfert ◽  
A.G. Repko ◽  
Yu.I. Fatueva

On the example of the territory of the Altai Krai, the article traces the consequences of destruction of the natural landscapes structure, the creation of artificial elements of their ecological framework of agricultural landscapes, which currently needs restoration and optimization. The thesis is substantiated that the ecological frame of the Altai Krai territory should be as close as possible to the structure of its natural landscapes, which will ensure the productivity of farmland. The most important elements of the ecological framework of forest-steppe and especially steppe landscapes are forest belts, for the creation of which it is necessary to use elements of a water-erosion network, tree species that form a zonal type of vegetation. Creating a system of protective forest plantations in combination with ponds and terrace embankments can increase crop yields up to 25-50 centners per hectare. Landscape planning can serve as a tool for creating an ecological framework for a territory.


Author(s):  
Jana Podhrázská ◽  
Josef Kučera ◽  
Hana Středová

The conditions for the development of wind erosion are determined by the soil and climatic conditions as well as by the presence or absence of wind barriers. It is because of its climatic and soil conditions that the territory of the South Moravia Region has been affected by erosion for centuries. Combined with the atmospheric conditions, the dry and warm climate enables the development of aeolian processes both in light, drying soils and – under certain climatic conditions – in heavy, clay-loam soils. Soil erosion exposure maps have been prepared in order to identify the territories which are potentially exposed to wind erosion in terms of the soil and climatic conditions. Six exposure categories have been applied to the soils. However, the impact of permanent vegetation barriers – line elements – must be considered in order to identify the most exposed areas. Protective forest belts were planted in the 1950s to counter the effects of wind erosion and they are included in the database of the Institute for Economic Forest Management. The network of these wind barriers and the heath condition of the individual elements are often unsatisfactory because of poor maintenance. The purpose of the study was to evaluate the spatial function of the network of protective forest belts using the map of the potential exposure of soil in the Region of South Moravia. The method used to evaluate the spatial function of the windbreaks presented in the study using GIS instruments.


2021 ◽  
Author(s):  
E. Zamiusskaya ◽  
V. Koza ◽  
Tat'yana Kramareva

The paper presents the results of studies of protective strips located in the Voronezh region in the Rossoshansky district. The characteristic of biometric data of forest belts of the same age and their dependence on the density of planting, width of strips and row spacing is given. The comparison of the soil, its impact on the growth and development of trees is displayed. The influence of the design of protective forest stands on the temperature of the surface air layer is also shown. The state of the plantings and the factors that adversely affect it are determined: the lack of care measures, deforestation, clutter and the presence of a large number of diseases and pests.


2018 ◽  
Vol 7 (4) ◽  
pp. 25-32
Author(s):  
Владимир Вавин ◽  
Vladimir Vavin ◽  
Владимир Тунякин ◽  
Vladimir Tunyakin ◽  
Наталия Рыбалкина ◽  
...  

Khrenovskoy section of the "Special Expedition of the Forest Department of the Ministry of Agriculture and State Property for testing and accounting of various ways and methods of forestry and water management in the steppes of Russia" is located in the south-east of the Voronezh region. In the scientific literature this territory is called the "Stone Steppe". The expedition worked here from 1892 to 1898. The first planting was carried out by O.I. Kovalev and K.E. Sobenevsky foresters. In one plantation, many trees and shrubs were tested for their suitability for afforestation in the region. Successors of foresters of "Special expedition ..." G.F. Morozov and A.N. Mikhailov finally decided on the main species, having secured this status behind English oak tree, but taking into account the new requirements for creation of forest belts, the search for the best oak companions is still continuing. Currently, in the south-east of the Central Black Earth (Voronezh region) there are more than 126 thousand hectares of protective plantations on agricultural lands located near ravine and narrows. Most of them grow without forest management; many were exposed to fire and need reforestation measures. In the Stone Steppe, experimental restoration felling has been carried out since 1933, when the forest strips were 38 years old. The last experimental regenerative felling was carried out in the 63 years old summer plantation (forest belt No. 72). The possibility of coppice resumption and creation of oak plantations on felling was tested. Cultures are not preserved because of ill-timed clarification. In the coppice stands the breed composition has changed due to the reduction of oak, which is also explained by the untimely cleaning of oak coppice. There is a perspective in the coppice stands of maple-linden plantations and in old-growth mother stands of oak-maple ones, since in all variants maple young growth is viable and is available in sufficient quantity. The article shows that despite the minimum amount of oak in the composition of the parent stand, by 122 it will begin to take the leading place. The dynamics of the species composition of the 122-year-old water-protection forest stand is considered and the analysis of the results of reforestation cuttings is carried out in different age periods of this plantation. It has been established that the parent tree stand, despite its thinness, has a considerable stock of stem wood, English oak has leading position in vitality, and European ash and black ash ; in the most part, are limited in viability, elm that prevailed during planting was the last one in the old-growth plantation.


2019 ◽  
Vol 30 (1) ◽  
pp. 56-61
Author(s):  
V. V. Pesotskaya

Modern forest belts are a large, complex and important part of the biosphere. The unique biocenoses in which specific ornithocomplexes are formed which include birds of different ecological groups are and feed on synanthropic species, birds of the forest, birds of the fields. The aim of the research is to study the features of the formation of ornithocomplexes of different (maple-ash purge forest belts, mixed dense forest belts, acacia purge forest belts, maple-lime openwork forest belts) protective forest belts within the Kharkiv region. In the course of the research we have registered 44 species of birds belonging to 8 rows Falconiformes, Galliformes, Columbiformes, Cuculiformes, Upupiformes, Piciformes, Passeriformes, Ciconiiformes. The formation of ornithocomplexes of protective forest belts depends on various factors. Outstanding is the phytocoenotic composition of forest belts and age structure of plantations. Settling of birds in shelterbelts afforestation occurs gradually, with the growth of trees and change conditions of the biocenosis.  The avifauna of maple-ash-tree scavenging forest belts is represented by 39 species of birds. Dominant and subdominant are: ficedula albicollis Temm., Fringilla coelebs L. In mixed shelterbelts purge nest 38 species of birds, is during foraging 2 types. Mixed dense forest belts inhabit 44 species of birds, biodiversity is associated with the floristic composition of the forest belt with significant density and well-formed undergrowth compared to other forest belts. Avifauna gorobinci purge belts are 26 species of birds. Ornithocomplex maple-lime fishnet shelterbelts are 41 species of birds. Analyzing the features of the formation of avifauna of forest belts, it can be argued that these biotopes are inhabited by birds of different ecological groups, biotopes, synanthropic species, birds of the forest, birds of the fields, are able to form unique biotopes. Therefore, field-protective forest plantations combined complex ecosystems. Analyzing the index of similarity of biodiversity of different types of forest belts, it can be argued that the most similar in species composition of birds are mixed dense forest belts and maple-lime openwork forest belts (jacquard Index – 93.1 and Serensen index 96.4) and maple-ash scavenging forest belts with mixed scavenging forest belts (jacquard Index-92.6 and Serensen index 96.2). Determined the relative numbers of registered types for zaplanovano classification V. P. Balka (2009): the most numerous Chaffinch (Fringilla coelebs L.), Zelenyak (Chloris chloris L.), goldfinch (Carduelis carduelis L.), Linnet (Acanthis cannabina L.), song thrush (Turdus philomelos Brehm.), sorokopud of thorns (Lanius collurio L.), Nightingale (Luscinia luscinia L), magpie (Pica pica L.), grey crow (Corvus cornix L.). Rare species are common berestyanka(Hippolais icterina L.), common Buzzard (Buteo buteo L.), common urticaria (Sylvia nisoria L.). The nature protection status of certain bird species is analyzed. 1 species listed in the Red book of Ukraine, 2 species In the red list of Kharkiv region. 2 types to the Washington Convention. Berne Convention Annex II (BC2) – 23 species, Berne Convention Annex III (BC3) – 13 species of birds, Bonn Convention Annex II (Bu2) – 10 species, Bonn Convention Annex I (BO1) – 2 species and 6 species of birds have no conservation status.


2021 ◽  
Vol 875 (1) ◽  
pp. 012065
Author(s):  
A V Koshelev ◽  
N A Tkachenko ◽  
M O Shatrovskaya

Abstract The paper presents the results of decoding the current condition of protective forest plantations of the Volgograd region and their digital inventory mapping on the basis of remote sensing methods and GIS technologies. We have applied a three-level analysis of the system of forest belts located within an administrative district, a farmstead, and a single forest belt. The laboratory visual interpretation of space images has allowed us to analyze the horizontal projection of the forest belts canopy and crowns, their placement in the canopy, as well as pattern and structure. We have also deciphered the signs of the prevailing patterns of tree species mixing. As a result of the research, we have created digital cartographic models of forest belts, compiled digital standards of elm stands in a given age period, assesse taxation and reclamation features of the current state of plantations. The results obtained can be used to monitor the state of plantings and create a local agroforestry GIS.


Author(s):  
V. M. Kretinin ◽  
K. N. Kulik ◽  
A. V. Koshelev

The article summarizes materials on the development and establishment of a scientific field - agroforestmeliorative soil science. Agroforestmelioration arose in the nineteenth century  based on it, with the active participation of V.V. Dokuchaev, agroforestmeliorative soil science developed as a forest soil science. The factors of soil formation under forest belts, the evolution and polymorphism of soils, the biogeocenotic horizon of the forest litter, soil regimes in the agroforestmelioration landscape, the influence of protective forest plantations on the soil, their role in reducing environmental pollution were studied, agroforestmeliorative zoning of Russia was carried out, and the forest suitability of soils was assessed. The ecological, energy and economic effect of CO2 sequestration from the reclamation effect of protective forest plantations  in Russia in the 20th century was calculated, which amounted to 256 trillion rubles. The cycle and balance of nitrogen and ash elements in the phytomass of field-protecting forest belts of the forest-steppe, steppe, dry-steppe and semi-desert zones of the Russian Federation was studied. The features of the type of cycle of elements are revealed. The average increase in humus in a meter layer of soil under protective forest plantations was 43.26 t/ha, gross nitrogen 2.181, phosphorus 0.704 and potassium 3.462 t/ha and at a distance of 4H from them, respectively, 8.22; 0.423; 0.271 and 2.243 t/ha. It was established that biologized crop rotation in the forest-reclaimed territory in the forest-steppe, steppe and dry-steppe natural zones increase soil yield by 1.9-17.0 points and crop productivity by 4355-9320 MJ/ha per year. For the first time in agroforestmeliorative soil science, materials are presented on changes in soil properties in the butt of tree species, soil reclamation of the phytogenic fields of trees and shrubs. The participation of agroforestmeliorative soil science in agroforestmeliorative agriculture, agroecology is shown. The tasks of agroforestmeliorative soil science for the coming period are proposed.


2020 ◽  
pp. 23-39
Author(s):  
V. O. Smirnov ◽  
N. V. Smirnova

The paper evaluates the climatic conditions in order to organize the restoration of protective forest strips on the territory of the Pervomaysky district of the Republic of Crimea. The following indicators were analyzed and mapped: the wind regime of the territory (wind direction, speed, repeatability); heat and moisture availability of the territory (precipitation for various periods, average and total temperature values for months and periods, moisture coefficients of the territory (Selyaninov hydrothermal coefficient (SCC), Budyko dryness index and Sukachev coefficient (CS). On their basis, climatopes of forest belts are compiled. The presented data and certain climatic parameters are used to determine the design features of forest belts within the areas under consideration. The amount of data provided is sufficient in accordance with the guidelines for the design of protective forest stands to assess the meso-climatic conditions of the survey area.


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