Szabó Szilárd

Prof. Szabó Szilárd

University of Derecen, Institute of Geosciences
orcid

Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 February 2015 in Environmental Processes
Verified
Journal Article
Closed access
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SSSudhir Kumar Singh
Sudhir Kumar Singh
SMSk. Mustak
Sk. Mustak
PSPrashant K. Srivastava
Prashant K. Srivastava
Szabó SzilárdSzabó Szilárd
Szabó Szilárd
TITanvir Islam
Tanvir Islam

12 June 2017 in Geocarto International
Verified
Journal Article
Closed access
SSSudhir Kumar Singh
Sudhir Kumar Singh
PLProsper Basommi Laari
Prosper Basommi Laari
SMSk. Mustak
Sk. Mustak
PSPrashant K. Srivastava
Prashant K. Srivastava
Szabó SzilárdSzabó Szilárd
Szabó Szilárd
An integrated Markov Chain and Cellular Automata modelling (CA MARKOV), multicriteria evaluation techniques have been applied to produce transition probability. The unsupervised method was employed to classify the satellite images of year 1985, 1995, 2005 and 2015 to meet the magnitude of LULC change. Results showing the spatial pattern of the sub-basin is largely influenced by the biophysical and socio-economic drivers leading to growth of agricultural lands and built-up area in the basin. Simulated plausible future LULC changes for 2025 which is based on a CA MARKOV that integrates Markovian transition probabilities computed from satellite-derived LULC maps and a CA contiguity spatial filter (5 × 5). Further, the fragmentation analysis was performed to check the fragmentation scenario in the year 2025. The result for year 2025 with reasonably good accuracy will be useful to the planners, policy- and decision-makers.

1 June 2020 in Ecological Indicators
Verified
Journal Article
Closed access
VMVanda Éva Molnár
Vanda Éva Molnár
ESEdina Simon
Edina Simon
Béla TóthmérészBéla Tóthmérész
Béla Tóthmérész
SNSarawut Ninsawat
Sarawut Ninsawat
Szabó SzilárdSzabó Szilárd
Szabó Szilárd

20 March 2017 in Geocarto International
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Journal Article
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LAMINE SalimLAMINE Salim
LAMINE Salim
George PetropoulosGeorge Petropoulos
George Petropoulos
SSSudhir Kumar Singh
Sudhir Kumar Singh
Szabó SzilárdSzabó Szilárd
Szabó Szilárd
NBNour El Islam Bachari
Nour El Islam Bachari
SSSwati Suman
Swati Suman
This study aims to quantify the landscape spatio-temporal dynamics including Land Use/Land Cover (LULC) changes occurred in a typical Mediterranean ecosystem of high ecological and cultural significance in central Greece covering a period of 9 years (2001–2009). Herein, we examined the synergistic operation among Hyperion hyperspectral satellite imagery with Support Vector Machines, the FRAGSTATS® landscape spatial analysis programme and Principal Component Analysis (PCA) for this purpose. The change analysis showed that notable changes reported in the experimental region during the studied period, particularly for certain LULC classes. The analysis of accuracy indices suggested that all the three classification techniques are performing satisfactorily with overall accuracy of 86.62, 91.67 and 89.26% in years 2001, 2004 and 2009, respectively. Results evidenced the requirement for taking measures to conserve this forest-dominated natural ecosystem from human-induced pressures and/or natural hazards occurred in the area. To our knowledge, this is the first study of its kind, demonstrating the Hyperion capability in quantifying LULC changes with landscape metrics using FRAGSTATS® programme and PCA for understanding the land surface fragmentation characteristics and their changes. The suggested approach is robust and flexible enough to be expanded further to other regions. Findings of this research can be of special importance in the context of the launch of spaceborne hyperspectral sensors that are already planned to be placed in orbit as the NASA’s HyspIRI sensor and EnMAP.

1 November 2016 in Land Use Policy
Verified
Journal Article
Closed access
BHBernadett Hüse
Bernadett Hüse
Szabó SzilárdSzabó Szilárd
Szabó Szilárd
DBDeák Balázs
Deák Balázs
Béla TóthmérészBéla Tóthmérész
Béla Tóthmérész

25 January 2016 in Geocarto International
Verified
Journal Article
Closed access
SSSudhir Kumar Singh
Sudhir Kumar Singh
PSPrashant K. Srivastava
Prashant K. Srivastava
Szabó SzilárdSzabó Szilárd
Szabó Szilárd
George PetropoulosGeorge Petropoulos
George Petropoulos
MGManika Gupta
Manika Gupta
TITanvir Islam
Tanvir Islam
Analysis of Earth observation (EO) data, often combined with geographical information systems (GIS), allows monitoring of land cover dynamics over different ecosystems, including protected or conservation sites. The aim of this study is to use contemporary technologies such as EO and GIS in synergy with fragmentation analysis, to quantify the changes in the landscape of the Rajaji National Park (RNP) during the period of 19 years (1990–2009). Several statistics such as principal component analysis (PCA) and spatial metrics are used to understand the results. PCA analysis has produced two principal components (PC) and explained 84.1% of the total variance, first component (PC1) accounted for the 57.8% of the total variance while the second component (PC2) has accounted for the 26.3% of the total variance calculated from the core area metrics, distance metrics and shape metrics. Our results suggested that notable changes happened in the RNP landscape, evidencing the requirement of taking appropriate measures to conserve this natural ecosystem.