scholarly journals GEOINFORMATION ANALYSIS OF ANTHROPOGENIC CHANGES IN THE LANDSCAPES OF THE FOREST-STEPPE ZONE OF UKRAINE

2021 ◽  
pp. 38-53
Author(s):  
O.G. Golubtsov ◽  
◽  
L.Yu. Sorokina ◽  
L.M. Tymuliak ◽  
V.M. Chekhniy ◽  
...  
Keyword(s):  
Land Use ◽  
Remote Sensing Data ◽  
Basic Research ◽  
Steppe Zone ◽  
Anthropogenic Activity ◽  
Forest Steppe ◽  
Anthropogenic Pressure ◽  
Anthropogenic Changes ◽  
Anthropogenic Transformation ◽  
Geographical Regions

The purpose of the publication is to present the results of the study of anthropogenic changes in the landscapes of the Forest-Steppe zone of Ukraine, implemented by assessing the indicators of landscapes anthropogenic transformation, their diversity and fragmentation. The basic research methods are methods of geospatial GIS analysis and decoding of remote sensing data of the Earth, geoinformation mapping. According to the indicators of anthropogenic transformation of landscapes at the level of physical-geographical regions and districts of the Forest-Steppe zone, the features of changes for the period 1992-2018 are determined. The results of assessment of anthropogenic changes in forest-steppe landscapes of Ukraine show that in 1992 as well as in 2018 the vast majority of the landscapes of the territory are strongly and excessively transformed by anthropogenic activity. Such patterns persist, despite the fact that during the analyzed period in part of the investigated area there is a certain decrease in anthropogenic pressure on landscapes. The regular relations between the indicators of anthropic landscape diversity and fragmentation of landscapes are determined, which corroborates to their certain conditionality by the degree and nature of anthropogenic transformation of the territory. The novelty of the study are the proposed methods of spatial and temporal changes in landscapes estimating and identifying such changes in landscapes at the level of physical and geographical regions for the period 1992-2018 and revealing trends in the structure of land use, especially agricultural lands, forests, built-up territories as the leading types of land use in the Forest-Steppe zone of Ukraine.

scholarly journals The InVEST Habitat Quality Model Associated with Land Use/Cover Changes: A Qualitative Case Study of the Winike Watershed in the Omo-Gibe Basin, Southwest Ethiopia

2020 ◽  
Vol 12 (7) ◽  
pp. 1103 ◽  
Author(s):  
Abreham Berta Aneseyee ◽  
Tomasz Noszczyk ◽  
Teshome Soromessa ◽  
Eyasu Elias
Keyword(s):  
Land Use ◽  
Habitat Quality ◽  
Global Economy ◽  
Habitat Degradation ◽  
Remote Sensing Data ◽  
Impact Factors ◽  
Conservation Strategies ◽  
Anthropogenic Pressure ◽  
Quality Model ◽  
Land Use Types

The contribution of biodiversity to the global economy, human survival, and welfare has been increasing significantly, but the anthropogenic pressure as a threat to the pristine habitat has followed. This study aims to identify habitat suitability, analyze the change in habitat quality from 1988 to 2018, and to investigate the correlation between impact factors and habitat quality. The InVEST habitat quality model was used to analyze the spatiotemporal change in habitat quality in individual land-use types in the Winike watershed. Remote sensing data were used to analyze the land use/land cover changes. Nine threat sources, their maximum distance of impact, mode of decay, and sensitivity to threats were also estimated for each land-use cover type. The analysis illustrates that habitat degradation in the watershed was continuously increasing over the last three decades (1988 to 2018). Each threat impact factor and habitat sensitivity have increased for the last 30 years. The most contributing factor of habitat degradation was the 25.41% agricultural expansion in 2018. Population density, land-use intensity, elevation, and slope were significantly correlated with the distribution of habitat quality. Habitat quality degradation in the watershed during the past three decades suggested that the conservation strategies applied in the watershed ecosystem were not effective. Therefore, this study helps decision makers, particularly regarding the lack of data on biodiversity. It further looks into the conflict between economic development and conservation of biodiversity.

scholarly journals Zonal and Zoogeographic Characteristic of the Ant Fauna (Hymenoptera, Formicidae) of Ukraine

2011 ◽  
Vol 45 (6) ◽  
pp. e-30-e-39 ◽  
Author(s):  
A. Radchenko
Keyword(s):  
Steppe Zone ◽  
Forest Steppe ◽  
Forest Zone ◽  
Geographical Regions ◽  
Essential Heterogeneity

Zonal and Zoogeographic Characteristic of the Ant Fauna (Hymenoptera, Formicidae) of UkraineOne hundred fourty ant species belonging to 38 genera of 5 subfamilies are known to occur in Ukraine nowadays. All the species are attributed to 16 zoogeographic complexes that are grouped into three faunogenetic classes. Comparative zonal and zoogeographical analysis of the fauna of different geographical regions of Ukraine has revealed their essential heterogeneity. The ant fauna of the Forest-Steppe zone is not original. At the same time, it is not transitive between the faunae of the Forest and Steppe zones. Ant fauna of the Forest-Steppe is related to those not the Steppe but the Forests zones, and the Forest-Steppe can be included in the southern subzone of a Forest zone of t Europe.

scholarly journals Rare spider species (Araneae) of protected steppe areas of the Kharkiv Region (Ukraine)

2019 ◽  
Keyword(s):  
Steppe Zone ◽  
Forest Steppe ◽  
Natural Ecosystems ◽  
Habitat Specificity ◽  
Southern Boundary ◽  
Anthropogenic Transformation ◽  
Geographic Ranges ◽  
Spider Species ◽  
Sparse Vegetation ◽  
Nature Park

A total of 426 spider species is known in the fauna of the Kharkiv Region. Of these, 32 species may be considered rare and/or vulnarable. The largest steppe areas in the Kharkiv Region are protected in the National Nature Park “Dvorichanskyi” and the Regional Landscape Park “Velykoburlutskyi Steppe”. The former hosts 11 rare spider species, the latter 13 species, and eight species occur in both Parks. For the species Lathys heterophthalma, Trachyzelotes lyonneti, Russocampus polchaninovaе, and Euryopis laeta it is the only valid record from Ukraine; for Pardosa maisa, Dipoena coracina, and Talavera aperta, maximun two or three localities are known. Titanoeca veteranica and Altella hungarica are the new records to the Kharkiv Region. Two species are extremely rare, Altella hungarica has been found in only seven localities in Europe, and Russocampus polchaninovae in four localities. Northern boundaries of the geographic ranges of Civizelotes pygmaeus, Gnaphosa dolosa, Xysticus marmoratus, X. mongolicus, and the southern boundary of Gnaphosa lugubris run through the Kharkiv Region. On the edges of their areas, these species become habitat specialists and occur only in steppes and/or dry meadows. Xyticus mongolicus inhabits sandy and chalky steppes with sparse vegetation. Gnaphosa taurica has high ecological plasticity in the steppe zone, while in the forest-steppe, it is limited with chalk and limestone outcrops. Some species like Gnaphosa lugubris, G. licenti, G. taurica, Zora pardalis and Eresus kollari, were abundant in our samplings while 19 species were found as singletons. G. taurica, and E. kollari preferred chalky slopes, G. licenti both chalky slopes and top of a southern ungrazed slope, G. lugubris dominated on all slopes in the Velykoburlutskyi Steppe, while Z. pardalis was the most abundant in ungrazed gully bottoms in both Parks. Being not numerous, Altella hungarica, Euryopis laeta, Civizelotes pygmaeus and Drassyllus vinealis occurred annually in the same habitats that may indicate stability of their populations. Given their habitat specificity, even numerous species became vulnerable under the threat of anthropogenic transformation of natural ecosystems. The only way to protect them is to preserve their habitats.

scholarly journals The transformation of the forest steppe in the lower Danube Plain of southeastern Europe: 6000 years of vegetation and land use dynamics

2021 ◽  
Vol 18 (3) ◽  
pp. 1081-1103
Author(s):  
Angelica Feurdean ◽  
Roxana Grindean ◽  
Gabriela Florescu ◽  
Ioan Tanţău ◽  
Eva M. Niedermeyer ◽  
...  
Keyword(s):  
Land Use ◽  
Human Impact ◽  
Forest Recovery ◽  
Tree Cover ◽  
Management Tool ◽  
Forest Steppe ◽  
Anthropogenic Pressure ◽  
Southeastern Europe ◽  
Climate Conditions ◽  
European Forest

Abstract. Forest steppes are dynamic ecosystems, highly susceptible to changes in climate, disturbances and land use. Here we examine the Holocene history of the European forest steppe ecotone in the lower Danube Plain to better understand its sensitivity to climate fluctuations, fire and human impact, and the timing of its transition into a cultural forest steppe. We used multi-proxy analyses (pollen, n-alkanes, coprophilous fungi, charcoal and geochemistry) of a 6000-year sequence from Lake Oltina (southeastern Romania) combined with a REVEALS (Regional Estimates of Vegetation Abundance from Large Sites) model of quantitative vegetation cover. We found a greater tree cover, composed of xerothermic (Carpinus orientalis and Quercus) and temperate (Carpinus betulus, Tilia, Ulmus and Fraxinus) tree taxa, between 6000 and 2500 cal yr BP. Maximum tree cover (∼ 50 %), dominated by C. orientalis occurred between 4200 and 2500 cal yr BP at a time of wetter climatic conditions and moderate fire activity. Compared to other European forest steppe areas, the dominance of C. orientalis represents the most distinct feature of the woodland's composition at this time. Tree loss was underway by 2500 yr BP (Iron Age), with the REVEALS model indicating a fall to ∼ 20 % tree cover from the Late Holocene forest maximum, linked to clearance for agriculture, while climate conditions remained wet. Biomass burning increased markedly at 2500 cal yr BP, suggesting that fire was regularly used as a management tool until 1000 cal yr BP when woody vegetation became scarce. A sparse tree cover, with only weak signs of forest recovery, then became a permanent characteristic of the lower Danube Plain, highlighting more or less continuous anthropogenic pressure. The timing of anthropogenic ecosystem transformation here (2500 cal yr BP) falls between that in central-eastern (between 3700 and 3000 cal yr BP) and eastern (after 2000 cal yr BP) Europe. Our study is the first quantitative land cover estimate at the forest steppe ecotone in southeastern Europe spanning 6000 years. It provides critical empirical evidence that, at a broad spatial scale, the present-day forest steppe and woodlands reflect the potential natural vegetation in this region under current climate conditions. However, the extent of tree cover and its composition have been neither stable in time nor shaped solely by the climate. Consequently, vegetation change must be seen as dynamic and reflecting wider changes in environmental conditions including natural disturbances and human impact.

scholarly journals ASSESSMENT OF LAND USE CONDITIONS BY AGRICULTURAL ORGANIZATIONS OF OMSK REGION

2018 ◽  
Vol 12 (4) ◽  
pp. 91-98
Author(s):  
Ольга Долматова ◽  
Ol'ga Dolmatova ◽  
Юрий Рогатнев ◽  
Yuriy Rogatnev
Keyword(s):  
Land Use ◽  
Crop Production ◽  
Agricultural Land ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Agricultural Organizations ◽  
Labor Resources ◽  
Effective Use ◽  
Means Of Production

The article presents the results of applying the methodology for assessing the quality of land to ensure effective agricultural production. On the basis of correlation-regression analysis, indicators were chosen, that ensure high and medium tightness of communication, necessary for the formation of effective use of land by agricultural organizations in the context of municipal districts of Omsk region. Using the variation coefficient, which shows the relative measure of the spread of data, a set is defined. Based on the selected indicators, in accordance with the scaling factor scale, an index assessment of the conditions was carried out, which showed that the agricultural organizations of the steppe and southern forest-steppe zone of Omsk region are most favorable for natural conditions and land properties. Not so definitely, but, basically, the situation of advantage in the supply of labor resources to organizations of the steppe and southern forest-steppe zone was confirmed. However, in terms of the availability of the main means of production, the best indicators are for organizations of the southern forest-steppe zone, which in the end provided them with an advantage in the anthropogenic conditions of using the land in front of other zones. In general, the overall quality of land use conditions in the areas of the southern forest-steppe was higher than in other areas. This has had a decisive impact on the level of efficiency of agricultural land use in the districts of the region. In general, the areas of the southern forest-steppe have a higher efficiency of land use and the efficiency of crop production.

scholarly journals Application of GIS and Earth Remote Sensing Data for the Evaluation of the Spatiotemporal Spread of Rabies in Eastern Trans-Baikal Region

2021 ◽  
pp. 100-107
Author(s):  
I. D. Zarva ◽  
M. V. Pavlov ◽  
A. A. Sorokovoi ◽  
A. D. Botvinkin
Keyword(s):  
Rabies Virus ◽  
Baikal Region ◽  
Remote Sensing Data ◽  
Steppe Zone ◽  
Anthropogenic Factors ◽  
Forest Steppe ◽  
Red Foxes ◽  
Spatial Spread ◽  
Natural Foci ◽  
Geographical Maps

The aim of the study was to improve monitoring of natural foci of rabies based on the use of modern technologies of cartographic analysis.Materials and methods. A retrospective study was carried out on the data of official registration of rabies in the Trans-Baikal Territory (Eastern Trans-Baikal Region) for 1950–2020. The spatial spread of rabies among animals was compared for two time periods: 1972–1978 (n=157 cases) and 2014–2020 (n=61 cases). Software packages QGIS 3.16.0, ArcMap 10.8.1, ArcScene 10.8.1 and electronic landscape-geographical maps of the world “Natural Earth”, “OpenStreetMap” were used for the mapping. Analyzed territorial units (ATUs) tied to a degree grid (0,5º × 0,5º) were marked on the cartograms. The interdependence between the localization of rabies cases and landscape elements was assessed statistically, comparing between the rabies free and the rabies affected ATUs.Results and discussion. Differences in the landscape confinedness of rabies epizootics in Eastern Trans-Baikal Region at different periods of time have been established. Until 1983, dog rabies prevailed, and epizootics spread beyond the forest-steppe zone. In 1984–2013 rabies among animals was not recorded. In 2014–2020 red foxes (Vulpes vulpes) were the main source of the rabies virus. The area of the epizootic has more than halved in comparison with 1972–1978. The main manifestations of rabies were observed at the junction of lowland and mountainous, steppe and forest areas. The rabies affected ATUs were characterized by more pronounced landscape variables. Possible routes of cross-border spread of the rabies virus have been identified. The connection between the features of the spatiotemporal spread of rabies and genetic variants of the virus, climate change, animal migrations and anthropogenic factors in Eastern Trans-Baikal Region in 1950–2020 is discussed. The results of the study are proposed to be used to adjust the programs for barrier oral vaccination of the foxes. 

Small-leaved herbaceous forests in galley and ravine systems of Priobskoe plateau (West Siberia)

2012 ◽  
pp. 78-95 ◽  
Author(s):  
N. N. Lashchinskiy ◽  
N. V. Lashchinskaya
Keyword(s):  
Floristic Composition ◽  
West Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Anthropogenic Pressure ◽  
Forest Patches ◽  
Steppe Species ◽  
New Associations ◽  
Geographical Position ◽  
Forest Distribution

Small-leaved forests of the galley and ravine systems on the Priobskoe plateau (West Siberia) belong to the Brachypodio pinnati–Betuletea pendulae class and the Calamagrostio epigei–Betuletalia pendulae order. All forest types were classified according to the Braun-Blanquet approach. Three new associations and four subassociations were described. Floristic composition presented by mixture of forest, meadow and steppe species reveals the geographical position and the environmental conditions of forest habitats. Forest distribution depends on the slope exposition and steepness. In spite of strong anthropogenic pressure many of forest patches could be considered as refuges of natural biodiversity in forest-steppe zone.

Application of remote sensing data to study the dynamics of the area and quantity of lakes south of the Tyumen region

2018 ◽  
Vol 935 (5) ◽  
pp. 45-53
Author(s):  
A.E. Pshenichnikov
Keyword(s):  
Water Surface ◽  
Pearson Correlation ◽  
Remote Sensing Data ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Pearson Correlation Coefficient ◽  
Precipitation Data ◽  
Geoinformation System ◽  
High Importance ◽  
Automated Interpretation

Despite the high importance of the problem of water scarcity, which is relevant for the forest-steppe zone, insufficient attention is paid to the study of lakes of the forest-steppe. Based on the results of automated interpretation of satellite imagery from Landsat satellites, a classification study was conducted in the QGIS geoinformation system to study the dynamics of the lakes in the Sladkovskiy municipal district of the Tyumen region from 1972 to 2016. The quantity of lakes and the area of the water surface were determined as of several time slices; the distribution of lakes into groups is given, depending on their size. An analysis of the dynamics of the obtained values and data on the level of precipitation showed that the nature of the change in the quantity and area of lakes coincides with the change in the phases of water content of a given territory. The calculation of the values of the Pearson correlation coefficient confirmed the connection between the level of precipitation and the investigated parameters. A closer correlation is evident if the calculations take into account precipitation data over a three-year period, including the current and two previous years.

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