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1.

001-es BibID:BIBFORM065089
Első szerző:Hüse Bernadett (biológus)
Cím:Mapping an ecological network of green habitat patches and their role in maintaining urban biodiversity in and around Debrecen city (Eastern Hungary) / Bernadett Hüse, Szilárd Szabó, Balázs Deák, Béla Tóthmérész
Dátum:2016
ISSN:0264-8377
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Land Use Policy. - 57 (2016), p. 574-581. -
További szerzők:Szabó Szilárd (1974-) (geográfus) Deák Balázs (1978-) (biológus) Tóthmérész Béla (1960-) (ökológus)
Pályázati támogatás:OTKA K 116639 (BT)
Egyéb
OTKA PD 115627 (BD)
Egyéb
SROP-4.2.2.B-15/1/KONV-2015-0001
Egyéb
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2.

001-es BibID:BIBFORM098118
035-os BibID:(WoS)000453339200046 (Scopus)85047524712
Első szerző:Kertész Ádám
Cím:Effect of land use change on ecosystem services in Lake Balaton Catchment / Kertész Ádám, Nagy Loránd Attila, Balázs Boglárka
Dátum:2019
ISSN:0264-8377
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Land use change
Sustainability
Ecosystem services
Land degradation
Lake Balaton
Megjelenés:Land Use Policy. - 80 (2019), p. 430-438. -
További szerzők:Nagy Loránd Attila (1993-) (geográfus) Balázs Boglárka (1985-) (geográfus)
Pályázati támogatás:NKFIH 108 755
Egyéb
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3.

001-es BibID:BIBFORM018826
Első szerző:Kertész Ádám
Cím:Biological geotextiles as a tool for soil moisture conservation / Kertész Ádám, Szalai Zoltán, Jakab Gergely, Tóth Adrienn, Szabó Szilárd, Madarász Balázs, Jankauskas Benediktas, Guerra Antonio, Bezerra Fernando, Panomtaranichagul Mattiga, Chau, Dao, Yi Zheng
Dátum:2011
Megjegyzések:Geotextiles have an important influence on soil moisture conditions. It is well known that the application of geotextiles increases soil moisture content of the soil, but there is a lack of information on how the different mats keep the soil moisture. The objective of this paper is to present the effect of biological geotextiles on soil moisture dynamics of the topsoil and to compare the effectiveness of various geotextiles in conserving soil moisture as well as comparing their role in soil moisture dynamics in the different climatic zones. Soil moisture measurements were carried out in the framework of the BORASSUS project at six study sites in Brazil, China, Hungary, Lithuania, Thailand, Vietnam. Soil moisture was measured by gravimetric method. All together six different kinds of biological geotextiles (Borassus, Buriti, Bamboo, Jute, Maize and Rice) and one synthetic geotextile were used. To study soil moisture dynamics of the geotextiles applied in Hungary 1000 cm3 soil monoliths were covered by Jute, Buriti and Borassus mats. The effects of natural rainfall events on soils and geotextiles were examined in detail. According to the results of this paper there is not much difference concerning the effect of biological geotextiles made from various materials on soil moisture conservation. There are, however, remarkable differences in conserving soil moisture according to the geographical location of the study sites. The favorable effect of geotextiles on soil moisture conservation could be statistically justified if annual precipitation amount is over 700 mm and the annual temperature range is below 28 °C.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
Biological geotextile
Soil moisture
BORASSUS Project
Soil hydrology
Megjelenés:Land Degradation & Development. - 22 : 5 (2011), p. 472-479. -
További szerzők:Szalai Zoltán Jakab Gergely Tóth Adrienn Szabó Szilárd (1974-) (geográfus) Madarász Balázs Jankauskas, Benediktas Guerra, Antonio Bezerra, Fernando Panomtaranichagul, Mattiga Chau, Dao Yi, Zheng
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4.

001-es BibID:BIBFORM069664
Első szerző:Mester Tamás (geográfus)
Cím:The effects of uninsulated sewage tanks on groundwater. A case study in an eastern Hungarian settlement / Mester Tamás, Szabó György, Bessenyei Éva, Karancsi Gergő, Barkóczi Norbert, Balla Dániel
Dátum:2017
ISSN:1429-7426 2083-4535
Megjegyzések:In our study we attempt to demonstrate the effects of uninsulated sewage tanks, which are the most importantsources of contamination in settlements without sewage systems, on groundwater quality. We comparedthe results of measurements carried out before and one and a half years after the construction of the sewage system.We established 3 m deep monitoring wells within a 25 m radius of a sewage tank, which were then sampled,and the level of groundwater was recorded. The 3D model constructed on the basis of the saturated zoneshows that the effluent wastewater formed a groundwater level dome with a height of more than 1 m. After thesewage tank was taken out of use the difference between the highest and lowest groundwater levels decreased toa few centimetres. In our study we investigated the spatial distribution of NH4+ (ammonium). Using the 3D modelwe were able to precisely determine the volume of water bodies with different levels of contamination. In anapproximately 25 m3 water body, in the immediate environment of a sewage tank in use we detected NH4+ ata concentration which was characteristic of undiluted wastewater (>90 mg?dm?3). After the sewage tank was takenout of use, the concentration in its immediate environment decreased by more than 50%, although almost everywherein the modelled area concentrations were measured above the limit value. Based on the above, we canconclude that the cleaning process has started, but the complete decontamination of the groundwater will takeseveral years.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
ammonium
groundwater contamination
groundwater level
modelling
pollution
wastewater
Megjelenés:Journal of Water and Land Development. - 33 : 4-6 (2017), p. 123-129. -
További szerzők:Szabó György (1964-) (geográfus, egyetemi tanár) Bessenyei Éva (1984-) (geográfus) Karancsi Gergő (1988-) (geográfus) Barkóczi Norbert (1990-) (geográfus) Balla Dániel Zoltán (1988-) (geográfus)
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5.

001-es BibID:BIBFORM108818
035-os BibID:(WoS)000956899600001 (Scopus)85151408992
Első szerző:Mohammed Safwan (agrármérnök)
Cím:Performance evaluation of machine learning algorithms to assess soil erosion in Mediterranean farmland : A case study in Syria / Safwan Mohammed, Ali Jouhra, Glory O. Enaruvbe, Bashar Bashir, Mona Barakat, Firas Alsilibe, Luc Cimusa Kulimushi, Abdullah Alsalman, Szilárd Szabó
Dátum:2023
ISSN:1085-3278
Megjegyzések:The development of new techniques, such as machine learning (ML), can provide better insight into the processes and drivers of soil erosion and runoff. However, the performance of these techniques to assess soil erosion in agricultural landscapes is poorly understood. The aim of this study was to evaluate the performance of four machine learning algorithms, Generalized Linear Model (GLM), Random Forest Regression (RF), Elastic Net Regression (EN) and Multiple Adaptive Regression Splines (MARS), in predicting soil erosion and runoff in Syria. Soil erosion and runoff were measured on three experimental plots (2.25 m ??1.50 m ??0.50 m, 0.10 m depth in the soil), combined with 3 different slopes and land use types: RS (8%, olive), SS (12%, citrus), KS (20%, pomegranate). Both erosion and runoff were determined after rainfall events of >10?mm between October 2019 and April 2020. Based on 24 effective rainfall events, the average soil erosion was 0.18?0.14 kg/m2 per event in KS, 0.14?0.11 kg/m2 per event in SS, and 0.12?0.10 kg/m2 per event in RS. Regression analysis indicated strong relationship between the rainfalls and the runoff, the highest connection was recorded in the KS plot (r2=0.85; p<0.05, n=24). The analysis of covariance indicated that only the runoff had a significant impact on soil erosion (p=0.02) with a medium effect (?2p=0.26). However, the impacts of rainfall events and slope categories on soil erosion were limited (?2p<0.01) and not significant (p>0.05). ML techniques were usually efficient in the prediction, the RF and MARS models were the most accurate: RF had the strongest correlation with the measured values (r=0.85) with a low estimation error (0.06 kg/m2), but MARS's standard deviation (SD) was closer to the recorded values' SD. GLM and and EN were the weakest predictor models. Modelled values of the slightest slope (8%) had the worst accuracies, and the predictions of the 12% slope were the best in all models. This study provides important insights into the usefulness of machine learning techniques and algorithms in predicting the rate of soil erosion and runoff in agricultural dominated landscapes. We highlighted that the RF and MARS algorithms were better predictors of soil erosion and runoff in the coastal region of Syria.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
soil properties
Entisols
GLM
ML-algorithms
Syria
Megjelenés:Land Degradation & Development. - [Epub ahead of print] : - (2023), p.1-38. -
További szerzők:Jouhra, Ali Enaruvbe, Glory O. Bashir, Bashar Barakat, Mona Alsilibe, Firas Cimusa Kulimushi, Luc Alsalman, Abdullah Szabó Szilárd (1974-) (geográfus)
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6.

001-es BibID:BIBFORM114231
035-os BibID:(cikkazonosító)1682 (WoS)001073997900001 (Scopus)85172794270
Első szerző:Pénzes János (geográfus)
Cím:Changes in the Patterns of Population Distribution and Built-up Areas of the Rural-Urban Fringe in Post-Socialist Context : A Central European Case Study / Pénzes, János; Hegedűs, László Dávid; Makhanov, Kanat; Túri, Zoltán
Dátum:2023
ISSN:2073-445X
Megjegyzések:The rapid and significant expansion of urban areas is observed worldwide; however, considerable differences are detected within the characteristics of the process. The rural-urban fringe is changing most dynamically from the aspect of land use and this tends to be relevant in the case of post-socialist cities in Central Europe even with a stagnating or decreasing population. Debrecen (Hungary) and its hinterland adequately represent the migration trends of Hungarian cities and the great administrative area provided wide intra-urban suburbanization processes. The current study put the emphasis on the analysis of the spatial pattern of built-up areas and the distribution of residents. In order to discover the processes of the post-socialist transition period, detailed point layers were created to illustrate every built-up parcel in the rural-urban fringe of Debrecen (for the years 1980, 2000, and 2020). The most important characteristics were discovered with the help of GIS methods-Kernel-density, grid pattern analysis of the object density, and analysis of land cover/land use changes using Corine Land Cover Change (CLCC) databases. The dynamic and extended expansion of built-up areas was seen until 2000, in which the outskirts (including hobby gardens) densified spectacularly. The urban sprawl has been less intensive since the millennium and the increase in built-up areas has become more concentrated. As a consequence of the transition period, extended territories-primarily the least dense parts of the rural-urban fringe-are faced with the disappearance of buildings due to agricultural cultivation reasons.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
grid pattern analysis
intra-urban suburbanization
Kernel density estimation
post-socialist countries
rural-urban fringe
urban sprawl
Megjelenés:Land. - 12 : 9 (2023), p. 1-20. -
További szerzők:Hegedűs László Dávid (1992-) (PhD hallgató) Makhanov Kanat (1990-) (közgazdász) Túri Zoltán (1980-) (geográfus)
Pályázati támogatás:Bolyai János Kutatási Ösztöndíj (BO/104/22)
MTA
K 138079
OTKA
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