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Gábor Szatmári

Gábor Szatmári
Institute for Soil Sciences, Centre for Agricultural Research · Department of Soil Mapping and Environmental Informatics

PhD

About

46
Publications
10,965
Reads
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687
Citations
Introduction
Gábor holds an MSc (2011) and a PhD (2017) in Environmental Sciences from the University of Szeged, Hungary. He works as a postdoc in the Institute for Soil Sciences, Centre for Agricultural Research. He is interested in pedometrics, geostatistics, environmental statistics, model-based sampling optimization, digital soil mapping and uncertainty assessment.
Additional affiliations
September 2019 - present
Hungarian Academy of Sciences
Position
  • PostDoc Position
September 2018 - August 2019
Hungarian Academy of Sciences
Position
  • Research Associate
September 2015 - August 2018
Hungarian Academy of Sciences
Position
  • Fellow
Education
September 2012 - August 2015
University of Szeged
Field of study
  • Environmental sciences
September 2009 - June 2011
University of Szeged
Field of study
  • Environmental sciences
September 2006 - June 2009
University of Szeged
Field of study
  • Environmental sciences

Publications

Publications (46)
Article
Full-text available
Recently, the Global Map of Salt-affected Soils (GSSmap) was launched, which pursued a country-driven approach and aimed to update the global and country-level information on salt-affected soils (SAS). The aim of this paper was to present how Hungary contributed to GSSmap by preparing its own SAS maps using advanced digital soil mapping techniques....
Article
Full-text available
A detailed knowledge of the stable isotope signature of precipitation is the basis of investigations in a variety of scientific fields and applications. To obtain robust and reliable results, the representativity of the currently operating (at least, as of 2018) precipitation stable isotope monitoring stations across Slovenia (n = 8) and Hungary (n...
Article
Full-text available
We compiled maps for the topsoil (0-30 cm) organic carbon (SOC) stock and its prediction uncertainty in Hungary at 100 m resolution for the years 1992 and 2010 using a machine learning algorithm, namely, quantile regression forest. 10-fold cross-validation was used for checking the accuracy of the spatial predictions and uncertainty quantifications...
Article
Full-text available
We compared the suitability of several commonly applied digital soil mapping (DSM) techniques to quantify uncertainty with regards to a survey of soil organic carbon stock (SOCS) in Hungary. To represent the wide range of DSM techniques fairly, the followings were selected: universal kriging (UK), sequential Gaussian simulation (SGS), random forest...
Article
Full-text available
Over the last decades extensive work has been done on sampling optimization. Many of the related papers focused on the optimization of sampling for only one soil property. However, there is a necessity to prepare a sampling strategy which is optimized for multivariate digital soil mapping (DSM) purposes. The aim of our work was to elaborate a sampl...
Article
Full-text available
Burrowing mammals such as European sousliks are widespread and contribute significantly to soil ecosystem services. However, they have declined across their range and the non-invasive estimation of their actual population size has remained a challenge. Results support that the number of burrow entrances is positively correlated with population abun...
Article
Full-text available
Eutrophication, water quality, and environmental status of lakes is a global issue that depends not only on external loadings from industrial, agricultural, and municipal sources but often also on internal loadings from lake sediments. In the latter case, in addition to the quality and quantity of nutrients stored in sediments, their relative conte...
Article
Full-text available
Lake Balaton has undergone rapid eutrophication in the last decades causing dramatic deterioration in water quality. Although water quality has been successfully improved, significant algal blooms have been experienced over the past years again. Since the high level of phosphorus is primarily responsible for algal blooms, it is necessary to explore...
Article
Full-text available
Many national and international initiatives rely on spatially explicit information on soil organic carbon (SOC) stock change at multiple scales to support policies aiming at land degradation neutrality and climate change mitigation. In this study, we used regression cokriging with random forest and spatial stochastic cosimulation to predict the SOC...
Preprint
Full-text available
Burrowing mammals are widespread and contribute significantly to soil ecosystem services. However, how to conduct a non-invasive estimation of their actual population size has remained a challenge. Results support that the number of burrow entrances is positively correlated with population abundance and burrows’ location indicates their area of occ...
Article
High-resolution ecosystem maps increase the efficiency of policy implementation. However due to challenges related to both data and methods, such maps of appropriate scale and quality are still rarely available for nationwide analyses. We present solutions to some typical challenges of national-scale ecosystem mapping through the new Ecosystem Map...
Article
The geographical environment fundamentally influences the transport and deposition of sediments, including microplastics. In addition, the socioeconomic differences inherent in transboundary catchments result in various waste management strategies among the different countries influencing the input of microplastics into rivers. The catchment of the...
Article
Full-text available
The Nitrates Directive aims (a) to protect water quality across Europe from nitrates originating from agricultural sources that pollute ground and surface water, and (b) to promote good farming practices. One of the most controversial measures of the directive is the winter prohibition period of fertilization, which has been extended by a month in...
Article
Full-text available
Soil carbon/nitrogen (C/N) ratios can provide essential information on soil health such as nitrogen limitations for plants or soil microorganisms. Determining soil C/N ratios can be challenging for larger geographic units such as for catchments, as nitrogen heterogeneity depends on several factors like land use, soil types, vegetation cover or seas...
Presentation
Full-text available
There is increasing demand for up-to-date spatial information on soil organic carbon (SOC). Meanwhile, Unmanned Aerial Vehicles (UAV) provide flexible technology for monitoring land surface features with high spatial resolution at plot scale. Suitably performed, airborne imagery simultaneously provides spectral and terrain based spatial auxiliary d...
Article
Full-text available
Inland excess water is temporary water inundation that occurs in flat-lands due to both precipitation and groundwater emerging on the surface as substantial sources. Inland excess water is an interrelated natural and human induced land degradation phenomenon, which causes several problems in the flat-land regions of Hungary covering nearly half of...
Article
Full-text available
The GlobalSoilMap initiative significantly inspired the DOSoReMI.hu (Digital, Optimized, Soil Related Maps and Information in Hungary) project, which was started intentionally for the renewal of the national spatial soil data infrastructure in Hungary. The main objectives of our work has been to broaden the possibilities, how demands on spatial soi...
Article
Full-text available
At present in Hungary, detailed habitat maps created with field mapping are available for only part of the country’s area, and not even for all nature conservation areas. The ecosystem type map briefly introduced in this article cannot replace such maps, but it has more detailed spatial and thematic resolution compared to the national-scale databas...
Article
Full-text available
For developing global strategies against the dramatic spread of invasive species, we need to identify the geographical, environmental, and socioeconomic factors determining the spatial distribution of invasive species. In our study, we investigated these factors influencing the occurrences of common milkweed (Asclepias syriaca L.), an invasive plan...
Article
Full-text available
Purpose We conducted this project to develop a feasible method for mapping tropical peat lands of Bengkalis Island—as a test site—in Indonesia. Materials and methods The method based on limited availability of field measurements and a wide range of remotely sensed spatial datasets like radar elevation product, MODIS, and Landsat imageries. We appl...
Article
Optimal water supply of plants is key to high yields. However, irrigation in drier regions must be accompanied by soil conservation. Nationwide planning of irrigation needs spatially exhaustive, functional soil maps, which may support proper recommendations for the different areas. For supporting the Hungarian national irrigation strategy, a series...
Article
Full-text available
Spatial 3-D information on soil hydraulic properties for areas larger than plot scale is usually derived using indirect methods such as pedotransfer functions (PTFs) due to the lack of measured information on them. PTFs describe the relationship between the desired soil hydraulic parameter and easily available soil properties based on a soil hydrau...
Article
Engineering works have affected the morphology of rivers (e.g., by cut-offs, artificial levees, revetments, and reservoir and dam constructions). These human impacts also have hydrological impacts, as they alter the natural channel geometry, affect the carrying capacity of the channel and confine the floodplains. The goals of the present paper are...
Article
Full-text available
Spatial 3D information on soil hydraulic properties for areas larger than plot scale are usually derived with indirect methods due to lacking measured information on those. Soil hydraulic properties are calculated with applying pedotransfer functions (PTFs) – which describe the relationship between the desired soil hydraulic parameter and easily av...
Article
• Maps of physical soil properties were compiled for differing layer depth distribution. • Synthetized maps were aggregated of maps created for standard depth layers. • Directly compiled and synthetized maps were compared by various tools. • Differences and similarities of the two types of prediction were identified. • Conclusions were drawn on pos...
Article
The history of the research of Debrecen scholars on salt-affected soils of Hortobágy and the region is very rich and diverse. Focusing on mapping, the following stages can be distinguished, indicating the completeness of the maps and the purpose of the performed work− First, quantitative maps (Arany, 1926) for the utilization of the lands at 1:75,0...
Chapter
The DOSoReMI.hu (Digital, Optimized, Soil Related Maps and Information in Hungary) project was started intentionally for the renewal of the national soil spatial infrastructure in Hungary partly inspired by GSM.net initiative. During our activities we have significantly extended the potential, how soil information requirements could be satisfied. S...
Conference Paper
Full-text available
The DOSoReMI.hu (Digital, Optimized, Soil Related Maps and Information in Hungary) project was started intentionally for the renewal of the national spatial soil infrastructure in Hungary partly inspired by GlobalSoilMap (GSM) initiative. During our activities we have significantly extended the potential, how soil information requirements could be...
Article
We provide an overview of the main features of the LUCAS topsoil survey of the EU in comparison to the GEMAS survey. In addition we describe the policy requirements and scientific principles of soil monitoring programs.
Chapter
The tasks of national spatial planning (i.e., delineation of areas with natural constraints or areas with excellent productivity; support of irrigation strategies; flood, drought, and climate change impact risk assessment) increasingly demand advanced or new kinds of spatial soil information, which cannot be fully satisfied by legacy soil maps or f...
Article
Full-text available
With the ongoing DOSoReMI.hu project we aimed to significantly extend the potential, how soil information requirements could be satisfied in Hungary. We started to compile digital soil maps, which fulfil optimally general as well as specific national and international demands from the aspect of thematic, spatial and temporal accuracy. In addition t...
Article
Geostatistical approaches and the underlying theory of regionalized variables have been increasingly used in general soil science and (digital) soil mapping since the beginning of the 1980s. This can be attributed to the fact that soil is an ideal medium for practical geostatistics, which additionally has yielded many developments, reconsiderations...
Article
Soil contamination is one of the greatest concerns among the threats to soil resources in Europe and globally. Despite of its importance there was only very course scale (1/5000km2) data available on soil heavy metal concentrations prior to the LUCAS topsoil survey, which had a sampling density of 200km2. Based on the results of the LUCAS sampling...
Chapter
Development of DSM can be notably attributed to frequent limitations in the availability of proper soil information; consequently, it has been typically used in cases featured by limited soil data. Since SCORPAN equation includes other or previously measured properties of soil, the usage of legacy soil data supports the applicability of DSM and imp...
Chapter
In this study, we have extended the spatial simulated annealing (SSA) methodology to be able to simultaneously optimize a completely new sampling design for more than one pedological variable using regression kriging prediction-error variance (RKV) as optimization criterion. For this purpose, the following soil properties were chosen: soil organic...
Article
Radon ((222)Rn) gas is produced in the radioactive decay chain of uranium ((238)U) which is an element that is naturally present in soils. Radon is transported mainly by diffusion and convection mechanisms through the soil depending mainly on the physical and meteorological parameters of the soil and can enter and accumulate in buildings. Health ri...
Article
Spatial information about physical soil properties is in great demand, being basic input data in numerous applications. Soil texture can be characterized by different approaches, such as particle size distribution, plasticity index or soil texture classification. In accordance with the increasing demands for spatial soil texture information, our ai...
Article
Full-text available
Modelling spatial variability and uncertainty is a highly challenging subject in soil- and geosciences. Regression kriging (RK) has several advantages; nevertheless it is not able to model the spatial uncertainty of the target variable. The main aim of this study is to present and test a sequential stochastic simulation approach based on regression...
Article
Full-text available
Due to former soil surveys and mapping activities significant amount of soil information has accumulated in Hungary. Present soil data requirements are mainly fulfilled with these available datasets either by their direct usage or after certain specific and generally fortuitous, thematic and/or spatial inference. Due to the more and more frequen...
Article
Full-text available
Spatial simulated annealing (SSA) was applied to optimize the sampling confi guration for soil organic matt er mapping through various sampling scenarios in a Hungarian study site. Prediction-error variance of regression kriging was applied as quality measure in the optimization procedures. Requisites of SSA come from a legacy soil dataset and from...
Article
Full-text available
The main objective of the DOSoReMI.hu (Digital, Optimized, Soil Related Maps and Information in Hungary) project is to significantly extend the potential, how demands on spatial soil related information could be satisfied in Hungary. Although a great amount of soil information is available due to former mappings and surveys, there are more and more...
Chapter
The main objective of the DOSoReMI.hu (Digital, Optimized, Soil Related Maps and Information in Hunga-ry) project is to significantly extend the potential, how demands on spatial soil related information could be satisfied in Hungary. Although a great amount of soil information is available due to former mappings and surveys, there are more and mor...
Article
Full-text available
The organic matter content (SOM) of topsoil in Zala County was digitally mapped using regression kriging based on data from the Digital Kreybig Soil Information System (DKSIS) and environmental auxiliary variables. Various combinations of soil-forming factors and DKSIS mapping units were used during the spatial inference process. The objective was...
Article
Full-text available
Munkankban egy mezőfoldi, dontően szantofoldi hasznositasu, vizerozioval veszelyeztetett mintaterulet talajtakarojanak szervesanyag-tartalmara vonatkozoan kivantunk geostatisztikai alapu becslest adni. Az Előszallastol DNy-ra elhelyezkedő kutatasi teruleten loszon kepződott meszlepedekes csernozjom, illetve az erozio bizonyitekakent lejtőhordalek e...
Article
Full-text available
Munkankban egy mezőfoldi, dontően szantofoldi hasznositasu teruleten vizsgaltuk a vizerozio előfordulasat, illetve a terulethasznositas es a potencialis erozioveszely egymashoz valo viszonyat. Az Előszallastol DNy-ra elhelyezkedő teruletet loszon kialakult meszlepedekes csernozjomok, a szelesebb volgytalpakon reti csernozjomok fedik, de a vizerozio...

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Projects

Projects (3)
Project
Dear Colleagues, Agronomy is one of the applications demanding the most spatial information on the state, functions, potential and processes of soils. Very recently, predictive soil maps, in the form of digital soil maps, are considered as the most effective representation of specific features of the soil mantle. The evolution of digital soil mapping is strongly related to the availability of spatially exhaustive, relatively low-cost data (available in the form of space-borne imagery and digital elevation models) as well as geostatistical and data mining methods suitable for the identification of hidden relationships between soil features and environmental factors, which then can be used for building predictive models. Recent advantages in proximal sensing increased the interest to apply and exploit the products serviced by these instruments for digital soil mapping at local and farm scale to support the spatial assessment of land and soil features (properties, functions, processes and services). Research papers presenting innovative approaches for the high resolution spatial assessment and mapping of various soil characteristics are welcomed in the present Special Issue. Dr. László Pásztor Dr. Gábor Szatmári Guest Editors
Project
The main objective is to inspect and objectively evaluate potential approaches and methods for quantifying uncertainty of predictive soil maps. In addition, special attention is paid to communicate uncertainty in such a way that it can be easily interpretable not just for expert but for non-expert stakeholders as well.
Project
The renewal of the national soil spatial infrastructure in Hungary.