Database.use.hdl: https://cris.mruni.eu/cris/handle/007/20937
Now showing 1 - 6 of 6
  • research article
    Miller, Bradley A.
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    Brevik, Eric C.
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    Schaetzl, Randall J.
    Progress in physical geography-earth and environment. London : Sage, 2019, vol. 43, iss. 6., p. 827-854
    The geography of soil is more important today than ever before. Models of environmental systems and myriad direct field applications depend on accurate information about soil properties and their spatial distribution. Many of these applications play a critical role in managing and preparing for issues of food security, water supply, and climate change. The capability to deliver soil maps with the accuracy and resolution needed by land use planning, precision agriculture, as well as hydrologic and meteorologic models is, fortunately, on the horizon due to advances in the geospatial revolution. Digital soil mapping, which utilizes spatial statistics and data provided by modern geospatial technologies, has now become an established area of study for soil scientists. Over 100 articles on digital soil mapping were published in 2018. The first and second generations of soil mapping thrived from collaborations between Earth scientists and geographers. As we enter the dawn of the third generation of soil maps, those collaborations remain essential. To that end, we review the historical connections between soil science and geography, examine the recent disconnect between those disciplines, and draw attention to opportunities for the reinvigoration of the long-standing field of soil geography. Finally, we emphasize the importance of this reinvigoration to geographers.
    WOS© IF 3.488WOS© AIF 3.099Scopus© SNIP 1.321
  • research article
    Fernandes, M.
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    Palma, P.
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    Lopes, L.
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    Ruiz-Fernandez, J.
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    Oliva, M.
    Quaternary international. Oxford : Pergamon - Elsevier Science, 2018, vol. 470, Part A., p. 96-108
    Present and past permafrost distribution in the Pyrenees is still under discussion. As in other mid-latitude mountain regions, rock glaciers and protalus lobes are the main indicators of permafrost conditions. In this paper we examine the distribution of these landforms in Aran and Boi valleys, formerly glaciated U-shaped valleys ranging from 600 to 3000 m in the southern and northern sides of the Central Pyrenees, respectively. The spatial distribution of these landforms and their chronostratigraphic position within the valley allow a better understanding of the climatic and environmental conditions necessary for their development. Up to 151 permafrost-related landforms were identified in the Boi valley, including 56 rock glaciers and 95 protalus lobes. In the case of the northern Aran valley, 76 rock glaciers and 89 protalus lobes were cataloged corresponding to 165 landforms. Most of the landforms (93% for rock glaciers and 95% for protalus lobes) are located inside the glacial cirques, with a few distributed in the slopes of the formerly glaciated valleys. The lowest elevation of rock glaciers is situated at 1744 m (Aran) and 2007 m (Boi), whereas the lowest protalus lobes are located at 1740 m and 2033 m, respectively. Therefore, this altitude may be indicative of the lowest level recording permafrost conditions during the period in which these landforms formed, with paleotemperatures ca. 7-8 degrees C lower than present-day. Between 60 and 70% of the protalus lobes and rock glaciers are located between 2300 and 2600 m in Boi valley and 2100 and 2400 m in Aran valley. The aspect shows a prevailing orientation of NW, N and NE for both cases of rock glaciers and protalus lobes, being almost absent in the S, SE and SW aspects. The average slope of both landforms lies between 11 and 27 degrees, with a maximum of 35 degrees for rock glaciers and 29 degrees for protalus lobes. The amplitude/length ratio reveals that rock glaciers placed at lower altitudes are more elongated. The chronostratigraphic position of these landforms within the valley and with respect to the moraine complexes suggests the existence of three generations of permafrost-related landforms which are associated to the massive deglaciation process between the maximum glacial advance of the Last Glaciation and the Holocene.
    WOS© IF 1.952WOS© AIF 3.033Scopus© SNIP 1.052
  • research article
    Menshov, Oleksandr
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    Kruglov, Oleksandr
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    Vyzhva, Sergiy
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    Nazarok, Pavlo
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    Pastushenko, Tatiana
    Studia Geophysica et Geodaetica. [New York] : Springer Nature, 2018, vol. 62, iss. 4., p. 681-696
    Magnetic measurements of soils are an effective research tool in assessing soil erosion. This approach is based on detecting layers showing different magnetic properties in vertical soil profiles and lateral catenas. The objective of this research is to compile data on magnetic susceptibility (MS) of soils in Eastern Ukraine to assess the soil erosion rates. The chernozems of Tcherkascy Tishki (Kharkov Region, Ukraine) have undergone a field crop rotation without proper soil conservation technologies being applied. We conducted an intrinsic element grouping of the magnetic susceptibility values and demonstrated that they can be used as MS cartograms in soil erosion mapping. The study showed a strong correlation between the MS values and the erosion index. MS and the erosion index were found to correlate with the humus content. Magnetic mineralogical analyses suggest the presence of highly magnetic minerals (magnetite and maghemite) as well as weakly magnetic goethite, ferrihydrite, and hematite. Stable pseudosingle-domain (PSD), single-domain (SD), and superparamagnetic (SP) grains of pedogenic origin dominate in the studied chernozems. Being an effective, quick and low cost alternative, magnetic methods can be successfully used in the soil erosion investigations.
    WOS© IF 1.293WOS© AIF 2.974Scopus© SNIP 1.059
  • research article
    Bogunovic, Igor
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    Andabaka, Zeljko
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    Stupic, Domagoj
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    Comino, Jesús Rodrigo
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    Cacic, Marija
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    Brezinscak, Luka
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    Maletic, Edi
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    Arabian journal of geosciences. Heidelberg : Springer, 2017, vol. 10, iss. 15, 340., p. 1-9
    The use of machinery in vineyards is increasing soil compaction and erosion. However, there is a lack of information about the impacts of different management practices on soil conditions of vineyards. Therefore, the aim of this study was to assess soil compaction in Croatian vineyards under four different management systems: no-tillage (NT) system, conventional tillage (CT), yearly inversed grass covered (INV-GC) and tillage managed (INV-T) treatments. Four key topsoil (0-20 cm) parameters were assessed in the different land uses: bulk density (BD), penetration resistance (PR), soil water content (SWC) and carbon dioxide (CO2) fluxes. Tractor traffic increased the BD and PR in all treatments, with exception of CT treatment, as consequence of tillage. SWC showed higher values in INV-GC treatment during the dry period; meanwhile, it was similar during the wet season in every management type. Lower CO2 fluxes were found in INV-GC and NT than in the CT and INV-T treatments.
    WOS© IF 0.86WOS© AIF 2.658Scopus© SNIP 0.616
  • research article
    Nonlinear analysis : modelling and control / Lithuanian Association of Nonlinear Analysts ; Lithuanian Academy of Science. Vilnius : Institute of Mathematics and Informatics, 2010, Vol. 15, no. 4., p. 493-500
    In the paper, the eigenvalue problems for one- and two-dimensional second order differential operators with nonlocal coupled boundary conditions are considered. Conditions for the existence of zero, positive, negative or complex eigenvalues are proposed and analytical expressions of eigenvalues are provided.
    WOS© IF 0.4WOS© AIF 1.287
  • research article
    Krylovas, Aleksandras
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    Čiegis, Raimondas
    Journal of nonlinear mathematical physics. Luleå : Atlantis Press, 2001, vol. 8, no. 4., p. 458-470
    WOS© IF 0.618WOS© AIF 0