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1.

001-es BibID:BIBFORM076396
Első szerző:Abriha Dávid (geográfus)
Cím:Identification of roofing materials with Discriminant Function Analysis and Random Forest classifiers on pan-sharpened WorldView-2 imagery - a comparison / Abriha Dávid, Kovács Zoltán, Ninsawat Sarawut, Bertalan László, Balázs Boglárka, Szabó Szilárd
Dátum:2018
ISSN:2064-5031 2064-5147
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
REMOTE SENSING
pan-sharpening
asbestos
MACHINE LEARNING
Megjelenés:Hungarian Geographical Bulletin. - 67 : 4 (2018), p. 375-392. -
További szerzők:Kovács Zoltán (1988-) (geográfus) Ninsawat, Sarawut Bertalan László (1989-) (geográfus) Balázs Boglárka (1985-) (geográfus) Szabó Szilárd (1974-) (geográfus)
Pályázati támogatás:EFOP-3.6.1-16-2016-00022
EFOP
TNN 123457
Egyéb
ÚNKP-18-2-I-DE-81
Egyéb
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2.

001-es BibID:BIBFORM063090
Első szerző:Centeri Csaba
Cím:Soil erodibility calculations based on different particle size distribution measurements / Csaba Centeri, Zoltán Szalai, Gergely Jakab, Károly Barta, Andrea Farsang, Szilárd Szabó, Zsolt Bíró
Dátum:2015
ISSN:2064-5031 2064-5147
Megjegyzések:In this study we focused on the factors affecting final outputs of the USLE (Universal Soil Loss Equation) model. In doing so, we conducted soil particle size measurements in different institutions (University of Debrecen, University of Szeged and Geographical Institute, Research Centre for Astronomy and Earth Sciences of the Hungarian Academy of Sciences) with a variety of methodologies (laser, aerometer and pipette methods) onvarious soil materials (sandy, loamy and clay). Statistical analyses of the eight examined soil samples have been shown some signifi cant and some non-signifi cant differences among the particle size measurements. This paper is aimed at i) to ascertain whether these signifi cant differences in particle size measurements cause signifi cant differences in soil erodibility calculations; and ii) to assess the amount of soil loss calculated by these K factors. The results suggest that regardless of the relatively small percentage between the smallest and the greatest K factor values, the amount of soil loss can be fairly high, especially when erosion occurs ona longer or steeper slope. In the present case, when we compare simulations results, the amount of soil loss is more important than the difference in percentage between the minimum and maximum values. Because the percentage of the difference can remain the same between the simulations, while the amount of soil lossincreases way beyond soil loss tolerance limits.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
methods of particle size measurement
soil erodibility
USLE
Megjelenés:Hungarian Geographical Bulletin. - 64 : 1 (2015), p. 17-23. -
További szerzők:Szalai Zoltán Jakab Gergely Barta Károly Farsang Andrea (1967-2022) (geográfus) Szabó Szilárd (1974-) (geográfus) Bíró Zsolt
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3.

001-es BibID:BIBFORM094282
Első szerző:Csorba Péter (geográfus)
Cím:Degree of human transformation of landscapes: a case study from Hungary / Csorba Péter, Szabó Szilárd
Dátum:2009
ISSN:2064-5031 2064-5147
Megjegyzések:CORINE land use categories were used to identify the scale of human impact on the landscapes. The test area covered 12 natural microregions in north-eastern Hungary (Figure 1). It was found that of the 12 microregions the oligohemerobe areas dominated in three, ?-euhemerobe in eight whereas ?-euhemerobe areas prevailed in one of them. The standard deviation value of the oligohemeroby data is the highest. There is not a single microregion in the study area with unfavourable landscape structure for ecotops from the aspect of human impacts. It is reasonable to weigh the different hemeroby levels. The dataset in Table 3 is the numerical representation of the degree of anthropogenic impacts when spatial ratios are taken into account. Adding up the weighed hemeroby values the degree of anthropogenic load on the landscape can be calculated. The resulting parameter can be called the hemeroby index (Table 5).
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
hemeroby
CORINE
Megjelenés:Hungarian Geographical Bulletin. - 58 : 2 (2009), p. 91-99. -
További szerzők:Szabó Szilárd (1974-) (geográfus)
Pályázati támogatás:T 042638
OTKA
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4.

001-es BibID:BIBFORM010314
Első szerző:Csorba Péter (geográfus)
Cím:Determination of human transformation of landscapes: a case study from Hungary / Csorba Péter, Szabó Szilárd
Dátum:2009
ISSN:2064-5031
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
hemeroby, CORINE
Megjelenés:Hungarian Geographical Bulletin. - 58 : 2 (2009), p. 91-99. -
További szerzők:Szabó Szilárd (1974-) (geográfus)
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5.

001-es BibID:BIBFORM082566
Első szerző:Jakab Gergely
Cím:Spatial analysis of changes and anomalies of intense rainfalls in Hungary / Gergely Jakab, Tibor Bíró, Zoltán Kovács, Ádám Papp, Ninsawat Sarawut, Zoltán Szalai, Balázs Madarász, Szilárd Szabó
Dátum:2019
ISSN:2064-5031 2064-5147
Megjegyzések:Extreme precipitation events can trigger flash flood, mass movements, pluvial flood and accelerated soil erosion. As soil structures are highly degraded due to intensive improper cultivation water infiltration can considerably decrease during the vegetation period. Additional changes in canopy coverage on the soil surface cause relevant variability in infiltration and hence vulnerability against runoff related disasters. Most researchers agree that the frequency of extreme precipitations increases, however, in the Carpathian Basin the uncertainties are quite high. This study aims to compare daily maximum mean precipitation amounts (MMPA) predicted by the Goda-method for June and August as the most probable months of extremities. We used the CarpatClim database as input and predicted MMPAs for two periods, 1960?1985 and 1986?2010. The Goda-method uses monthly data and calculates daily results on given probability. A general increase was found between the first and second half of the period regarding daily maximum precipitation amount in both investigated months. For August the 1-day precipitation amount increased from 56.1 mm to 61.8 mm, whereas 6-days amount from 93.8 mm to 103.2 mm at 1 per cent probability (r = 0.53; p < 0.001). Beyond this change, relevant spatial differences were found. Comparing the macro regions plains had lower increase compared to the mountains, whereas the highest increase was at the. The most endangered location is the southern part of the Transdanubian Hills where parallel with the intensive increase in MMPA both in June and August the environmental conditions such as loose parent material and the high percentage of crop fields also emphasize the potential hazard.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
extreme precipitation
climate change
soil erosion
flash flood
pluvial flood
Megjelenés:Hungarian Geographical Bulletin. - 68 : 3 (2019), p. 241-253. -
További szerzők:Bíró Tibor Kovács Zoltán (1988-) (geográfus) Papp Ádám Sarawut, Ninsawat Szalai Zoltán Madarász Balázs Szabó Szilárd (1974-) (geográfus)
Pályázati támogatás:NKFIH 108755
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6.

001-es BibID:BIBFORM082571
Első szerző:Lontai-Szilágyi Zsuzsanna
Cím:A novel approach of mapping landscape aesthetic value and its validation with rural tourism data / Zsuzsanna Lontai-Szilágyi, Boglárka Bertalan-Balázs, Bernadett Zsiros, Mária Vasvári, Singh Sudhir Kumar, Patel Nilanchal, Katalin Martonné Erdős, Szilárd Szabó
Dátum:2019
ISSN:2064-5031 2064-5147
Megjegyzések:Landscape aesthetic research that emerged from the second half of the 20th century has become increasingly appreciated and popular in the last few decades. There are two main reasons for this. On the one hand, it was recognized the role of landscape aesthetics in land use and environmental planning, management and conservation. On the other hand, its definition among Cultural Ecosystem Services has made it clear that landscape aesthetics has significant impact on human well-being and there is a need to examine it in the concept of Ecosystem Services and, in particular, Cultural Ecosystem Services (CES). The mapping of landscape aesthetics is mostly based on the exclusive evaluation of objective, biophysical landscape factors. The aim of the research was to create the landscape aesthetic map of Hungary with a novel method based on human perception. For this, a questionnaire survey and a GIS approach were used. In order to better understand the role of factors influencing the aesthetic value of the landscape, value maps separately for land cover and elevation that are decisive for the landscape experience were prepared. To validate the results of the maps, and contribute a better understanding of the interrelationship between CES, a certain tourism product was chosen, and the connection between landscape aesthetics and the offer of rural tourism was examined in Hungary and in the Danube Bend priority tourism development area. Our findings show that there is a difference in the results of the objective (GIS-based) and subjective (questionnaire-based) assessment of landscape aesthetic value with the more important role of elevation in the latter. According to our tourism product-based analysis, which represents a niche approach in its kind, landscape values are higher in the areas with rural accommodation. At the same time, based on the results of the Danube Bend region, it can also be concluded that elevation and land cover together are crucial factors in landscapes considered to be the most valuable in aesthetic terms. The most direct practical application of our research is to orientate further tourism development of the new Danube Bend area designated in 2017.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
landscape value
land cover
rural accommodation
weigthed average
questionnaire
validation
Megjelenés:Hungarian Geographical Bulletin. - 68 : 3 (2019), p. 283-301. -
További szerzők:Balázs Boglárka (1985-) (geográfus) Zsiros Bernadett Vasvári Mária (1984-) (geográfus) Kumar Singh, Sudhir Nilanchal, Patel Martonné Erdős Katalin (1946-) (geográfus) Szabó Szilárd (1974-) (geográfus)
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7.

001-es BibID:BIBFORM084643
Első szerző:Rawat, Kishan Singh
Cím:Parameterizing the modified water cloud model to improve soil moisture data retrieval using vegetation models / Kishan Singh Rawat, Sudhir Kumar Singh, Ram L. Ray, Szilárd Szabó, Sanjeev Kumar
Dátum:2020
ISSN:2064-5031 2064-5147
Megjegyzések:The objective was to parameterize a modified water cloud model using crop coefficients (A and B). These crop coefficients were derived from Landsat-8 and Sentinel-2 data. Whereas the coefficients C and D are of soil parameters. The water cloud model was modified using crop coefficients by minimizing the RMSE between observed VV?0 and Sentinel-1 based simulated VV?0. The comparison with observed and simulated VV polarized ?0 showed low RMSE (0.81 dB) and strong R2 of 0.98 for NDVI-EVI combination. However, based on other possible combinations of vegetation indices VV?0 and simulated VV?0 do not show a good statistical agreement. It was observed that the errors in crop coefficients (A and B) are sensitive to errors in initial vegetation/canopy descriptor parameters.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
NDVI
EVI
SAR
Sentinel
WCM
Megjelenés:Hungarian Geographical Bulletin. - 69 : 1 (2020), p. 17-26. -
További szerzők:Singh, Sudhir Kumar (1970-) (geográfus) Ray, Ram L. Szabó Szilárd (1974-) (geográfus) Kumar, Sanjeev
Pályázati támogatás:NKFIH-1150-6/2019
FIKP
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8.

001-es BibID:BIBFORM082289
Első szerző:Szabó Szilárd (geográfus)
Cím:Geospatial analysis of drought tendencies in the Carpathians as reflected in a 50-year time series / Szilárd Szabó, Noémi Mária Szopos, Boglárka Bertalan-Balázs, Elemér László, Dragan D. Milošević, Christian Conoscenti, István Lázár
Dátum:2019
ISSN:2064-5031 2064-5147
Megjegyzések:Climate change is one of the most important issues of anthropogenic activities. The increasing drought conditions can cause water shortage and heat waves and can influence the agricultural production or the water supply of cities. The Carpathian region is also affected by this phenomenon; thus, we aimed at identifying the tendencies between 1960 and 2010 applying the CarpatClim (CC) database. We calculated the trends for each grid point of CC, plotted the results on maps, and applied statistical analysis on annual and seasonal level. We revealed that monthly average temperature, maximum temperature and evapotranspiration had similar patterns and had positive trends in all seasons except autumn. Precipitation also had a positive trend, but it had negative values in winter. The geospatial analysis disclosed an increasing trend from West to East and from north to west. A simple binary approach (value of 1 above the upper quartile in case of temperature and evapotranspiration, value of 1 below the lower quartile; 0 for the rest of the data) helped to identify the most sensitive areas where all the involved climatic variables exceeded the threshold: Western Hungary and Eastern Croatia. Results can help to prepare possible mitigation strategies to climate change and both landowners and planners can draw the conclusions.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
CarpatClim
climatic change
robust comparisons
sensitivity
Megjelenés:Hungarian Geographical Bulletin. - 68 : 3 (2019), p. 269-282. -
További szerzők:Szopos Noémi Mária (1994-) (geográfus) Balázs Boglárka (1985-) (geográfus) László Elemér (1987-) (meteorológus előrejelző szakiránnyal) Milosevic, Dragan Conoscenti, Christian Lázár István (1986-) (geográfus)
Pályázati támogatás:NKFIH 108755
egyéb
GINOP-2.3.2-15-2016-00009
GINOP
ICER
TUDFO/51757/2019-IT
egyéb
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