Slawomir Królewicz

Slawomir Królewicz
Adam Mickiewicz University | UAM · Department of Soil and Remote Sensing Soil Science

PhD

About

42
Publications
10,800
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208
Citations
Citations since 2017
14 Research Items
167 Citations
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201720182019202020212022202305101520253035
201720182019202020212022202305101520253035

Publications

Publications (42)
Article
Full-text available
Measurement of water content in forest habitats is considered essential in ecological research on forests, climate change, or forest management. In the traditional forest habitat classification, two systems of habitat conditions analysis are found: single factor and multifactor methods. Both are laborious and therefore costly. Remote sensing method...
Article
Full-text available
Remote sensing techniques based on soil spectral characteristics are the key to future land management; however, they still require field measurement and an agrochemical laboratory for the calibration of the soil property model. Visible and near-infrared diffuse reflectance spectroscopy has proven to be a rapid and effective method. This study aime...
Article
Full-text available
Thermal imaging is an important source of information for geographic information systems (GIS) in various aspects of environmental research. This work contains a variety of experiences related to the use of the Yuneec E10T thermal imaging camera with a 320 × 240 pixel matrix and 4.3 mm focal length dedicated to working with the Yuneec H520 UAV in o...
Article
Full-text available
This article aims to demonstrate the use of Sentinel images to develop strategies for heritage protection and management in rural landscapes that are currently undergoing dynamic transformations. Construction works are causing rapid and extensive land use changes that threaten archaeological structures. Moreover, the modernisation of farming practi...
Preprint
Full-text available
Measurement of water content in forest habitats is considered essential in all ecological research on forests, climate change or forest management, but also in protection against floods, wildfires and soil erosion. In traditional forest habitat classification two systems of habitat conditions analysis are found: single factor or multifactor methods...
Chapter
Full-text available
The work describes a simple radiometric calibration of the E10T camera dedicated to the Yuneec H520 UAV (the camera was developed thanks to the cooperation with the producer of thermal sensors, FLIR). Temperature calibration was performed using a concrete floor covered with ceramic tiles and a kettle with water heated to a boiling temperature, as t...
Article
Full-text available
Tillage of arable fields, using for instance a smoothing harrow, may increase the magnitude of albedo of such soil surfaces depending on the location, the sun’s illumination and atmospheric components. As these soil surfaces absorb less shortwave radiation compared to plowed soils, the result is an atmospheric cooling and a positive effect on the E...
Chapter
Full-text available
W pracy zawarto wyniki porównania dwóch trójwymiarowych chmur punktów przedstawiających zróżnicowanie topografii odkrywki ziemnej wykonanej pod fundamenty poligonu geodezyjnego przy Wydziale Nauk Geograficznych i Geologicznych Uniwersytetu im. Adama Mickiewicza w Poznaniu. Pierwszą z nich uzyskano w wyniku jednokrotnego skanowania laserowego na śre...
Article
Soil spectral characteristics from laboratory and in situ measurements are an effective source of information about various soil properties. However, features of scanned surfaces are unified by the drying and grounding of soil samples solely for laboratory measurements. Spectra scanned in situ are perturbed to varying degrees due to spatial variati...
Article
Full-text available
The use of unmanned aerial vehicles is becoming more and more popular for making high-altitude and orthophotomap models. In this process, series of images are taken at specific intervals, usually lasting several seconds. This article demonstrates the ability to make models and orthophotomaps from dynamic images – video recorded from UAV. The best m...
Article
Full-text available
The albedo of bare soil depends on its organic matter, iron oxide, carbonate contents, and reflectance geometry, features considered stable over time, and also depends on salinity, moisture and roughness, which change dynamically due to agricultural practices. This paper deals with the quantitative estimation of the amount of shortwave radiation th...
Article
Full-text available
The objective of this study was to assess the relationship between the hyperspectral reflectance of soils and their albedo, measured under various roughness conditions. 108 soil surface measurements were conducted in Poland and Israel. Each surface was characterised by its diurnal albedo variation in the field as well as by its reflectance spectra...
Poster
Full-text available
The roughness of soil surface, together with its moisture are two of the most varying in time and space characteristics of the state of soil. Influence of moisture on soil’s reflectance level is well documented, therefore remote sensing data are commonly used to assess soil moisture. However, effect of roughness state on remote sensed data is omitt...
Article
Full-text available
Smoothing a rough, deeply plowed soil increases its albedo, which determines a lower amount of shortwave radiation absorbed by its surface layer. That surface emits less longwave radiation, leading to a reduction in its temperature, which in turn can affect the climate, influencing the energy transfer between soil, vegetation, and the atmosphere. T...
Conference Paper
Full-text available
The objective of this study was to assess the relationship between the hyperspectral reflectance of soils and its albedo, measured under various roughness conditions. 108 soil surfaces measurements were conducted in Poland and Israel. Each surface was characterized by its diurnal albedo variation in the field as well as its reflectance spectra that...
Poster
Full-text available
Proper land management strategy, as precision agriculture integrates sets of data through current information technology. There is observed an increase in methods of data acquisition and information techniques applied in agriculture. The effective use of well-equipped machines for soil fertilizing depends on diagnostic tools. The classical soil dia...
Article
Full-text available
Various remote sensing methods, including diffuse and contact reflectance spectroscopy (DRS and CRS, respectively) as well as proximal soil sensing (PSS), have been widely used for obtaining information about the soil properties. The influence of soil surface roughness on soil spectra obtained with a FieldSpecPro (ASD) spectroradiometer using three...
Poster
Full-text available
Since 1995 „Monitoring of chemistry of Polish arable soil” program is carried out under the State Environmental Monitoring. On the area of 140 000 km2 of arable soils, 216 control and measurements points were selected. Soil samples are collected every 5 years and number of physical and chemical analysis are determined. Taking into consideration, co...
Conference Paper
Full-text available
The soil albedo is mainly determined by soil mass constituents stable over a long time, such as organic carbon, carbonates and iron oxides, and is dynamically modified by the roughness and moisture of soil surfaces. Taking into account annual variations in the bare soil area of arable land in Poland extracted from Landsat 8 images, the amount of sh...
Chapter
Full-text available
The soil surface roughness is one of the most susceptible to variation in time and space characteristic, and depends on many variables like cultivation practices or soil aggregation. Various indices are used for its quantification, in microscale soil roughness is commonly expressed by HSD calculated from DEM of small sample area. The source of DEM...
Article
Full-text available
This paper reports a preliminary study on correctness of the broadband albedo (αb) of cultivated soils that could be calculated by their narrowband bidirectional reflectance factors (BRF) measured from many directions with a prototype goniometric device in a laboratory on their samples with similar roughness as these soils revealed in the field. Th...
Article
Full-text available
This paper quantitatively explores, in terms of roughness indices, the effect of soil surface irregularities on the diurnal variation of the broadband blue-sky albedo of a large range of soil properties. Field studies were carried out on cultivated and uncultivated soil surfaces in Poland and Israel that vary in roughness and brightness. It was fou...
Conference Paper
Full-text available
Visible and near-infrared (VNIR) diffuse reflectance spectroscopy (DRS) has proven to be effective tools of estimation of soil properties. Regression models are usually calibrated on the entire datasets without its stratification. This paper discusses how clustering of the soil spectra improves prediction of basic soil properties: contents of sand,...
Article
Full-text available
This paper evaluates the fitting of the hyperspectral bidirectional reflectance data of soil surfaces formed by a cultivator, a pulverizing harrow, and a smoothing harrow, collected in field conditions as illuminated by direct and diffuse solar radiation, to their bidirectional reflectance equivalents measured in the laboratory with only a direct r...
Article
Full-text available
This study explores the diurnal variation, from midday to sunset, in broadband blue-sky albedo (α) of soils with respect to their surface roughness. Five roughness levels of soil surfaces shaped by a plow, spike tooth harrow and roller, then also modified by rain, developed from the same soil material, were examined. The relation between α and the...
Technical Report
The reflectance of soil samples was measured in the wavelength range from 350 nm to 2500 nm, at 1-nm intervals, using a FieldSpec®Pro spectroradiometer (Analytical Spectral Devices, Inc., Boulder, CO, USA) with the attached Source Probe Mug-Lite®. Contact spectral measurements were calibrated with a white reference Spectralon® panel (Labsphere, Inc...
Article
Full-text available
Knowledge of how land cover has changed over time improve assessments of the changes in the future. Wide availability of remote sensed data and relatively low cost of their acquisition make them very attractive data source for Geographical Information Systems (GIS). The main goal of this paper is to prepare, run and evaluate image classification us...
Poster
Full-text available
The goal of the study was to investigate the possibility of application of visible and near infrared diffuse reflectance spectroscopy (VNIR-DRS) measurements to monitoring of arable soils chemistry. Fifty one soil characteristics were determined in 212 soil samples which were collected during the program “Monitoring of Chemistry of Arable Soils” co...
Poster
Full-text available
The reflectance data derived from the WorldView2 satellite image, obtained on the 5th of May 2010 covering two 25 ha crop fields near Poznan, Poland was regressed with a number of soil properties using the Partial Least Squares regression, a multivariate regression method that allows a robust modeling of multidimensional data by converting them int...
Conference Paper
Full-text available
This study explores the diurnal variation, from midday to sunset, in blue-sky albedo (α) of soil under clear-sky conditions, with respect to their surface roughness. Five roughness levels of soil surfaces shaped by a plow, spike tooth harrow and roller, then also modified by rain, developed from the same soil material, were examined. The relation b...
Article
Full-text available
The structural transformation of Polish agriculture after 1989 has been leading to significant changes in land use. As a result a large part of formerly ploughed fields lies abandoned and they occur across considerable variability in soil typological units. Accurate information about soil conditions within the abandoned fields facilitates proper ma...
Conference Paper
Full-text available
ABSTRACT: The process of generating digital elevation models can be proceed on the basis of single panchromatic channel or on the basis of colour compositions obtained by combination of single spectral channels. Modern digital cameras can register image using 4 spectral channels. On the basis of them, it is possible to prepare RGB and CIR (colour i...
Conference Paper
Full-text available
This paper shows how strongly the bidirectional reflectance factor (BRF) of a harrowed soil surface collected in the field is correlated with the BRF of surface equivalents measured in the laboratory: an undisturbed sample as well as its artificial samples formed from the same soil material with furrows at different scales. The average fitting for...
Conference Paper
Full-text available
The laboratory measurements of the diffuse spectral reflectance of 212 soil samples, representing many various taxonomic units, collected throughout the area of arable lands in Poland, were conducted to investigate the relationship between the soil reflectance and their selected properties. It was found that among various tested transformations the...
Article
Full-text available
The results of the paper draw attention to the fact that the hyperspectral image of soil surface at micro-relief scale may display variation in the soil spectral shape due to illumination conditions of the surface. The image of an extremely rough cultivated soil surface, very deeply ploughed, was obtained by a hyperspectral camera, in the range of...
Article
Full-text available
Remote sensing data is applied in soil cartography to setting soil boundaries. It most often concerns bare soil surfaces, but it is also possible to determine spatial variation of the soil through the analysis the vegetation variability. It relates particularly to areas covered with natural vegetation. The area of fallow farmlands in Poland covers...
Article
Full-text available
A simple geometrical model was used to predict the brightness variation of ploughed soil surfaces and surfaces put under potato cultivation, remotely sensed from air-borne level. The model was tested in outdoor conditions on an artificially formed soil surface with a furrow micro-relief configuration. The spectral data were measured by a field six-...
Article
A simple geometrical model was used to predict the brightness variation of ploughed soil surfaces and surfaces put under potato cultivation, remotely sensed from air-borne level. The model was tested in outdoor conditions on an artificially formed soil surface with a furrow micro-relief configuration. The spectral data were measured by a field six-...

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Projects

Projects (5)
Project
The subject of the project is to carry out R&D works on a product that is innovative on a national scale - an IT service for the optimization of agricultural crop productivity management using satellite imagery, based on personalized GIS services generated autonomously on the basis of artificial intelligence, available on a dedicated agricultural portal. As a result of this R&D works, a prototype system will be developed at the IX TRL. The solution will operate on the basis of artificial intelligence and will be intended primarily for farmers, fertilizer producers, seed breeders and agricultural advisory centers. The main goal of the project is to develop a new product - an IT service, the implement. of which will increase the competitiveness of the Project Leader - Poldrone Sp. z o.o. This goal will be achieved through the implementation by the Consortium, stages of the project (parameterized with milestones) and increasing the R&D potential of the company through not only employment of R&D employees but, above all, cooperation with experienced research units. As part of the project, industrial research will be carried out by the research workers of the Project Leader and members of the Consortium, aimed at acquiring new knowledge in many areas, including determining the potential of cultivation sites, controlling the production potential of the crop, diagnosing the state of plant nutrition with nitrogen, determining nitrogen doses and forecasting yields. Then, experimental, development works will be carried out aimed at using the acquired new knowledge and its implementation in a market solution - an innovative IT service, available on a dedicated agricultural portal. As a result of the project, a prototype of the system will be developed at the IX technological readiness level. The implement. of the project results will take place through the sale of an annual license, the size of which will depend on the number of hectares covered by the service.
Archived project
The reflectance of soil samples was measured in the wavelength range from 350 nm to 2500 nm, at 1-nm intervals, using a FieldSpec®Pro spectroradiometer (Analytical Spectral Devices, Inc., Boulder, CO, USA) with the attached Source Probe Mug-Lite®. Contact spectral measurements were calibrated with a white reference Spectralon® panel (Labsphere, Inc., North Sutton, NH, USA). Five reflectance spectra of each soil sample were collected and then averaged. The reflectance data were generalized into 10-nm intervals to provide a more concise dataset. Standard field characterization was performed at each location, soil profile was described to identify soil morphological properties of all horizons. Soils where classified according to Polish Soil Classification (SGP 2011) and World Reference Base (WRB 2007). The samples were analysed in the laboratory of the Department of Soil Science and Remote Sensing of Soils, Adam Mickiewicz University in Poznań. They were air-dried, ground, and sieved through a 2 mm sieve. Clay (<2 μm) and silt (2–50 μm) fraction contents were determined using the hydrometer method (PKN, standard 04032, 1998) and sand (50-2000 μm) contents were calculated as the complement up to 100% . Soil organic carbon (Corg) content was based on sulfochromic oxidation of organic carbon with tube digestion, followed by titration of excess K2Cr2O7 with FeSO4´7H2O (Nelson and Somers, 1996). Cation exchange capacity (CEC) was calculated as a sum of total exchangeable bases (TEB) and exchangeable acidity (Hex). TEB was determined according to Mehlich method (TEA– triethanoloamine BaCl2) in modification of Kociałkowski and Ratajczak (1984) Hex (and ALex) according to Thomas (1982). Soil reaction was determined in 1:1 soil suspension in water and 1M KCl (pHH20, pHKCL) and carbonates content (CaCO3) according to Scheibler volumetric method.
Project
The main challenge of modern agriculture is increasing production while reducing the pressure on the environment. This can be achieved by improving the management of water and nitrogen which are the main factors of agricultural production. Taking up this challenge would require a quick and effective diagnosis of the nitrogen nutrition status of plants in the principal stages of crop formation. Accomplishing this task requires using effective diagnostic tools in order to assess the nutritional status of plants during the growing season, as well as determining the corrective doses of nitrogen and performing the task. The diagnostic tools used to assess the nitrogen nutrition status that are currently available are not effective. Fundamental errors arise from the point sampling (low spatial representativeness) and long analysis time, and are in fact affected by the forecast error. Such limitations can be eliminated through the use of remote sensing techniques. These methods consist of registering the electromagnetic radiation (solar radiation) reflected from the surface of the soil and plants. The aim of the research is to develop and validate methods and tools that increase the efficiency of the means of production, mainly nitrogen, maintaining the established level or/and increase in crop yields, while improving the quality of the environment, in regard not only to nitrogen, but also the increase of CO2 in the biomass of plants (physiological sequestration). The results of industrial research will be compiled in a consolidated set of guidelines and methodological approaches to be implemented in the dedicated IT system prototype at the development stage. This will allow to use the developed algorithms in a subsequent commercial solution which will disseminate the use of knowledge about the growth rate control and the needs of crops at critical phases of growth, available so far only to scientific research institutes.