Peter Kalicz

University of Sopron · Geomatics and Civil Engineering

The effects of the changing frequency and severity of drought events in Central Europe may become a growing concern for its forests. In this study, we will look into how Hungary's forests have been affected by the 2022 compound heatwave and drought, following an arid period from 2018 to 2021. We used our active intensive monitoring plots of the For...

The effects of the changing frequency and severity of drought events in Central Europe may become a growing concern for its forests. In this study, we looked into how Hungary’s forests have been affected by the 2022 compound heatwave and drought, following an arid period from 2018 to 2021. We used our active intensive monitoring plots of the Forest...

2022 will be remembered as a year of severe drought in Europe. Production losses from six crops with the most extensive harvested area on account of the drought may even have run to an estimated 13 billion euros in the EU27, while based on the ratio of harvested areas, the total revenue loss to cropland farming may have reached twice as much (25–30...

Climate change and water scarcity increase the vulnerability of crop production and other ecosystem services (ES) in flood-protected lowlands under a continental climate. Restoration of wetlands leads to a higher water-buffering capacity of the landscape, strengthening various ecosystem services, and fostering adaptation to climatic, ecological, an...

The decline in groundwater levels is a cause of concern in many regions of the world, including the Sand Ridge of Hungary. The causes of the regional depletion range from rising air temperatures, changes in precipitation, domestic and agricultural groundwater use and past amelioration and recent afforestation, including the effects of drilling for...

The groundwater uptake of forest stands often generates disputes, especially in today's drying climate. Forestry in Hungary does not take into account groundwater as a surplus water resource under 2 meters, while other sources show forest groundwater uptake in case of much deeper water table. White method is the most appropriate way to quantify wat...

The main purpose of the present study was to monitor actual contamination levels and execute a comparative assessment of results in a mid-sized Hungarian city for two different years. The first citywide soil investigations were completed in 2011. In 2018, the most prominent properties (pH, CaCO3, texture, and trace metals Cd, Co, Cu, Ni, Pb, and Zn...

Regional climate change projections for Europe agree in predicting a statistically significant warming in all seasons. The most significant climate change effect is its impact on water cycle through altering precipitation patterns and evapotranspiration processes at multiple scales. The anticipated changes in the distribution and precipitation amou...

Water research is one of many fields where fused filament fabrication 3D printing offers the freedom of customization and the inclusion of commercial components. We present our 330 mL 3D printed laboratory receptacle that has been customized to control pressurized air and liquid in one body. During our tests, water has been stored without loss, and...

A környezeti jellemzők (elsősorban a hőmérséklet, a csapadék, a légnedvesség, a talajvíz mélysége, valamint a fagyás-olvadás ciklusok) jelentős hatást gyakorolnak az útburkolatok állapotára és élettartamára, ezért a pályaszerkezetek méretezésénél is fontos tényezőként veendők figyelembe. Jelen cikk a fagyás és az olvadás útpályaszerkezetre gyakorol...

A környezeti jellemzők (elsősorban a hőmérséklet, a csapadék, a légnedvesség, a fagyás-olvadás ciklusok és a talajvíz mélysége) jelentős hatást gyakorolnak az útburkolatok állapotára és élettartamára, tehát a pályaszerkezetek méretezésénél is fontos tényezőként vehetők figyelembe. Az aszfaltburkolatú pályaszerkezetek tartósságának számításánál, az...

Providing information on the impacts of climate change on hydrological processes is becoming ever more critical. Modelling and evaluating the expected changes of the water resources over different spatial and time scales can be useful in several fields, e.g. agriculture, forestry and water management. Previously a Budyko-type spatially distributed...

Environmental parameters (primarily temperature, precipitation, air humidity, freeze-thaw cycles and groundwater depth) have a significant impact on the condition and lifespan of pavements, therefore they can be taken into account as critical factors during pavement design methods. In calculating the durability of asphalt pavements, temperature, fl...

In this research a set of tests were performed to determine the effect of lime addition and water content on the bearing capacity of cohesive soils. The bearing capacity was measured by the CBR method. Four types of soils were included in the research. Soil samples were prepared from each type by 6 different water content, 4 dosage of lime addition...

The current and ongoing climate change over Europe can be characterized by statistically significant warming trend in all seasons. Warming has also an effect on the hydrological cycle through the precipitation intensity. Consequently, the supposed changes in the distribution and amount of precipitation with the continuously increasing temperature m...

The increasingly used remote sensing-based evapotranspiration estimation techniques provide information about the spatial and temporal variability of evapotranspiration on the field and regional scales. For Hungary, the most reliable evapotranspiration mapping model is the CREMAP (Calibration-Free Evapotranspiration Mapping), which uses MODIS surfa...

Forest ecosystems typically have a large leaf-area index both within the crown level and on the ground as litter, making interception a very important element of the forest water balance. Broad information exists about crown interception, but relatively few data are available regarding litter interception. The litter layer is able to change the qua...

Urbanization and related environmental pollution have strong effects on stream systems by inducing short duration high-peak floods, raised levels of nutrients and contaminants, altered channel geomorphology, sediment dynamics, and reduced biotic richness. The main purpose of this current study is to detect stream contamination levels in a mid-sized...

kivonat Cikkünk irodalmi adatokra és gyakorlati szakemberekkel folytatott tapasztalatcserékre alapozva ad képet a homokhátsá-gi erdôállományok vízháztartási jellemzôirôl. Munkánk során helyi mérésekbôl származó adatokat, megfigyeléseket is fel-használtunk. A homokhátsági erdôk vízháztartását meghatározó elemeit, a kapcsolódó irodalmi adatok alapján...

Despite the advanced activity of urban soil research, comparison of available trace metal contents in the soil of settlements has not yet been well investigated. First aim of research was the comparison of human impacts on urban soils in two Hungarian cities with different structure and development. To detect the sources of contamination, Szombathe...

Climate change will alter various components of the water balance on global, regional, and local scales; these changes will be measurable mainly through alterations of the spatial distribution and temporal trends of temperature, precipitation, and evapotranspiration. We analyzed the water balance of two Hungarian watersheds (Zala and Bácsbokodi-Kíg...

Introduction: Forest cover in Hungary has increased from 1.1 to 2.0 million hectares during the last century. The EU (European Union) promotes further afforestation; thus, 15,000–18,000 ha are being forested each year, mainly in the Hungarian Great Plain. In terms of species used for afforestation, poplar plantations are preferred over native oak w...

Current and ongoing changes in the climate are typified by a rise in global temperatures. Climate change can have a dramatic impact on the water cycle. The aim of this paper was to develop a model based on Thornthwaite-type monthly water balance estimations. The main goals were to calibrate the model parameters using a remote sensing-based evapotra...

The water balance of Zala County was analyzed using remote-sensing based actual evapotranspiration (ETA) (Kovacs 2011) and runoff (R) in the context of land cover types. The highest mean ETA rates were determined for water bodies (658 mm/year) and wetlands (622 mm/year). Forests have higher values than agricultural areas, and the lowest rates belon...

The forest area in Hungary has increased during the last century from 1.1 to 2.0 million ha. The European Union supports further afforestation so roughly 15 -18 000 hectares are being planted each year, mostly on the Hungarian Great Plain. Water uptake of forests from groundwater can be significant in shallow groundwater areas of the Hungarian Grea...

Models that describe hydrological processes in forests may help to estimate the consequences of forestry interventions or of climate change. The authors employed a hydrologic model for estimation of forest litter interception of a middle-aged sessile oak (Quercus petraea) stand. Antecedent water content and the storage capacity of the forest litter...

The moisture pattern of the forest floor, both spatial and temporal scale, have growing respect for the forestry. The main cause is the transition to the continuous cover forestry, the advent of natural reforestation techniques. The final goal is to maintain the optimal conditions for seedlings. The beginning steps of a long-term research are intro...

Nowadays Hungarian foresters encounter a new challenge. The traditional management practices do not meet anymore with the demand of the civil society. The good old clearcut is no more a supported technology in forest regeneration. The transition to the continuous cover forestry induces much higher spatial variability compared to the even aged, more...

Ha nyílt területtel (rét, szántó, tarvágás) hasonlítjuk össze, a zárt erdő sajátos módon megváltoztatja a terület hidrológiáját térben és időben egyaránt. A lombkorona hatalmas levélfelülete a leérkező csapadék térbeli mintázatát jelentősen módosítja. Kisebb csapadék akár teljes egészében fennmaradhat a lombkoronában, amit az esőt követően az érdes...

Evapotranspiration (ET) estimation methods based on diurnal water level (surface or groundwater) fluctuations are sensitive to measurement accuracy ( and ). Water level fluctuations are often measured by pressure transducers of varying design and precision. Available total pressure transducers require a compensation for barometric pressure change s...

According to the climate predictions, hydro-meteorological conditions expected to change in the future, leading to the alteration of erosion dynamics. Based on regional climate projections, climatic extremes may become more frequent for the end of the 21st century. Intensive rainfall events may increase soil loss on the sloping areas resulting in p...

In Hungarian Great Plain forested areas has significantly increased during the last century. Hydrological effects of trees differ from that of crops or grasses in that, due to their deep roots, they extract water from much deeper soil layers. It has been demonstrated that forest cover causes water table depression and subsurface salt accumulation a...

Precipitation is trapped and temporarily stored by the surfaces of forest crown (canopy interception) and forest litter (litter interception). The stemflow and throughfall reach the litter, thus theoretically the litter moisture content depends on these parts of precipitation. Nowadays the moisture pattern of the forest floor, both spatial and temp...

Runoff processes in natural catchments are significantly different compared to urbanized areas. Human impacts are manifested in high amount of paved surfaces like roofs, roads, parking plots and the compacted soils of quasi natural areas like public gardens and parks. Decay of permeability and storage capacity both induce higher amount of runoff. T...

Considerable qualitative and quantitative changes can be generally detected in case of urban sections of the streams as the results of strong human interventions along the stream channel or in the drainage basin in urban areas. The water status becomes worse and the water regime becomes more extreme. The negative changes have an effect on the broad...

The advent of the digital data logging results huge amount of hydrological time series from wide variety of hydrological phenomenon and water quality indicators. There are different sampling frequencies, irregular time steps, hand measured control data which are necessary treat in the same database. Some processes (e.g. the concentration of surface...

Hydrological conditions of urbanized areas are remarkably different compared to the catchments without human impacts. Surfaces are crowded with roofs of houses, pavements of roads and parking plots and the soil of quasi natural places like public gardens and parks are much more compacted compared to soils of natural catchments areas without human i...

A városi területeken az eredetileg természetes vízgyűjtő minőségi és mennyiségi jellemzőiben jelentős változások következnek be. A vízminőség romlása hatást gyakorol a tágabb környezetre, ökoszisztémára, valamint maga után vonja a biodiverzitás csökkenését. A burkolt, vízzáró felületek növekedése, valamint a csökkenő felületi tározódás és felületi...

Qualitative and quantitative hydrological conditions of urban territories can be remarkably different compared to the catchments without human impacts. Impairment of water quality has an effect to the wider environment and ecosystem, as well as leading to decreasing of biodiversity. Increasing extent of paved, impermeable surfaces, decreasing stora...

The evapotranspiration (ET) estimation method by Gribovszki et al. (2010b) has so far been validated only at one catchment because good quality discharge time series with the required high enough temporal resolution can probably be found at only a handful of watersheds worldwide. To fill in the gap of measured data, synthetic groundwater discharge...

Diurnal fluctuations of hydrological variables (e.g., shallow groundwater level or streamflow rate) are comparatively rarely investigated in the hydrologic literature although these short-term fluctuations may incorporate useful information for the characterization of hydro-ecological systems. The fluctuations can be induced by several factors like...

Discharge measuring is a common method in the hydrological research. While the continuous discharge time series is determined by the rainfall, the riparian vegetation have great effect on the falling limb of the hydrograph. The information enclosed in the falling limb can be subtracted with help of the linear storage model. The initial time point o...

Diel signal of hydrological variables (e.g., shallow groundwater level or streamflow rate) are rarely investigated in the hydrologic literature although these short-term fluctuations may incorporate useful information for the characterization of hydro-ecological systems. Riparian vegetation (especially forest) typically has a great influence on gro...

Diel fluctuation of hydrological features in forested lands is not a highly researched area. Many of the details of geophysical effects on the eco-hydrological phenomena in forest covered areas are poorly understood, too. In this paper some meteorological (net radiation, temperature, relative humidity data) and eco-hydrological (electrical potentia...

The dams' affects on the stream system also involve accelerated sedimentation of reservoirs, change of water and sediment regime. In consequence of sedimentation the lifetime and the recreational potential of reservoirs decrease and management practices have to be applied. The area of our study is a small forested catchment, where the erosion of fo...

Hidrológiai Közlöny

Riparian vegetation typically has a great influence on groundwater level and groundwater-sustained stream baseflow. By modifying the well-known method by White [White, W.N., 1932. Method of estimating groundwater supplies based on discharge by plants and evaporation from soil – results of investigation in Escalante Valley, Utah – US Geological Surv...

Gribovszki et al. (Gribovszki, Z., Kalicz, P., Szilagyi, J., Kucsara, M., 2008. Riparian zone evapotranspiration estimation from diurnal groundwater-level fluctuations. J. Hydrol.) recently reported a peculiar phase-shift in diurnal streamflow and riparian zone groundwater-level fluctuations during streamflow recession for a small forested watershe...

Riparian forests have a strong influence on groundwater levels and groundwater sustained stream baseflow. An empirical and a hydraulic version of a new method were developed to calculate evapotranspiration values from riparian zone groundwater levels. The new technique was tested on the hydrometeorological data set of the Hidegvíz Valley (located i...

Hidrológiai Közlöny

By applying a nonlinear reservoir approach for groundwater drainage, catchment-scale evapotranspiration (ET) during flow recessions can be expressed with the help of the lumped version of the water balance equation for the catchment. The attractiveness of the approach is that ET, in theory, can be obtained by the sole use of observed flow values fo...

Summary By applying a nonlinear reservoir approach for groundwater drainage, catchment-scale evapotranspiration (ET) during flow recessions can be expressed with the help of the lumped version of the water balance equation for the catchment. The attractiveness of the approach is that ET, in theory, can be obtained by the sole use of observed flow v...