Edyta Wozniak

Polish Academy of Sciences | PAN · Space Research Center

The purpose of this article is to present the scope and the dynamics of the environmental changes unfolded in the vicinity of Mtendeli refugee camp. It presents a new method, which combines geospatial analysis of high-resolution Earth observation data (Sentinel-1&2) with ground-based observations and input from local experts. Time series classifica...

The study explores the feasibility of adapting the EOStat crop monitoring system, originally designed for monitoring crop growth conditions in Poland, to fulfill the requirements of a similar system in Ukraine. The system utilizes satellite data and agrometeorological information provided by the Copernicus program, which offers these resources free...

50 days' free access to the article before June 18; available here: https://authors.elsevier.com/c/1i-zI5m5d81TNk

Gross primary productivity (GPP) is an Essential Variable needed for evaluating the status and changes in terrestrial ecosystems. Measuring GPP in the Alpine and Arctic tundra is especially important. It is also challenging, due to the remoteness of the sites and the harsh weather conditions. Nevertheless, an effort is necessary to understand the b...

Wildfire detection and mapping is crucial for managing natural resources and preventing further environmental damage. In this study, we compared two methods of mapping burn scars using Sentinel-2 satellite imagery, a pixel-based approach and an object-based approach, at test sites located in various climatic zones with diverse land cover synthesis....

A new fractional q-order variation of the RothC model for the dynamics of soil organic carbon is introduced. A computational method based on the discretization of the analytic solution along with the finite-difference technique are suggested and the stability results for the latter are given. The accuracy of the scheme, in terms of the temporal ste...

Recreational ecosystem services are crucial for human well-being, and nature-based recreational activities often support local economies. However, tourism is very often one of many threads that contribute to the environment, and, therefore, data regarding its spatial patterns are necessary for the long-term sustainable development of a region. The...

One important area where satellite-based Earth observation is applied in is agricultural statistics. The use of new digital technologies and satellite data have contributed to the modernisation of the aforementioned scientific area and is designed to overcome the problems that both agricultural statistics and the recipients of statistical data are...

The SOC change index , defined as the normalized difference between the actual Soil Organic Carbon and the value assumed at an initial reference year, is here tailored to the RothC carbon model dynamics. It assumes as a baseline the value of the SOC equilibrium under constant environmental conditions. A sensitivity analysis is performed to evaluate...

The aim of the study was to develop a low-cost method for tourism opportunity spectrum evaluation in rural landscapes. The method uses the geographic information system (GIS) for spatial analysis of the problem. Open source materials are used in the evaluation. Three principal indices derived from spatial data are evaluated: attraction index, view...

Timely crop yield forecasts at a national level are substantial to support food policies, to assess agricultural production, and to subsidize regions affected by food shortage. This study presents an operational crop yield forecasting system for Poland that employs freely available satellite and agro-meteorological products provided by the Copernic...

Crop classification is a crucial prerequisite for the collection of agricultural statistics, efficient crop management, biodiversity control, the design of agricultural policy, and food security. Crops are characterized by significant change during the growing season, and this information can be used to improve classification accuracy. However, cap...

Timely crop yield forecasts at national level are substantial to support food policies, to assess agricultural production and to subsidize regions affected by food shortage. This study presents an operational crop yield forecasting system for Poland that employs freely available satellite and agro-meteorological products provided by the Copernicus...

For most of the world’s population, urban green spaces (UGS) offer the easiest form of contact with nature. Such environments deliver a wide variety of Recreational Ecosystem Services (RES) to visitors. This paper explores RES delivery in different types of UGS, differentiated with respect to their naturalness and distance from the city centre. Fur...

This article aims to meet two needs: (i) the need for skilled workers and students in the area of remote sensing and (ii) the need to make school science interesting for students. This article addresses both needs by proposing a project for high school students entitled "the Colors of Earth". The main aim for students was to distinguish between dif...

Land Cover (LC) plays a key role in many disciplines and its classification from optical imagery is one of the prevalent applications of remote sensing. Besides years of researches and innovation on LC, the classification of some areas of the World is still challenging due to environmental and climatic constraints, such as the one of the mountainou...

This article explores the application of Hölder exponent analysis for the identification and delineation of single tree crowns from very high-resolution (VHR) imagery captured by unmanned aerial vehicles (UAV). Most of the present individual tree crown detection (ITD) methods are based on canopy height models (CHM) and are very effective as far as...

Interdisciplinary models of teaching have been present in education systems for at least 30 years. The idea of the interdisciplinarity is to show students the contextualisation of subject knowledge, its relation to real-life problems and to build skills across traditional disciplinary boundaries. This is essential to future competitiveness since in...

This study develops a typology of tourists visiting a nature-based destination as a function of outdoor activities. It then identifies social, economic and spatial differences between them. A cluster analysis is applied to survey data collected in the Great Masurian Lakes region of Poland. Six clusters were identified: angling sailors, non-angling...

Mapping of regional fires would make it possible to analyse their environmental, social and economic impact, as well as to develop better fire management systems. However, automatic mapping of burnt areas has proved to be a challenging task, due to the wide diversity of vegetation cover worldwide and the heterogeneous nature of fires themselves. He...

This study uses time-series Sentinel-1(S-1) synthetic aperture radar images to evaluate the impact of multi-temporal polarimetric processing on land-cover classification. Various polarimetric processing methods are applied to multi-temporal S-1 data set in order to obtain several inputs parameters for land-cover classification: e.g. time-series coh...

Recreation is a complex and important ecosystem service. Therefore, there is a need for approaches that can account for this complexity, and integrate both environmental and socio-economical perspectives. The Recreational Ecosystem Services (RES) model proposed in this paper responds to this need. RES are understood as the delivery of services, con...

This study uses the ray tracing method to simulate synthetic aperture radar (SAR) images of urban areas. The images are constructed for polarisations: horizontal-horizontal (HH) and verticalvertical (VV), and different types of buildings, vegetation, and streets. Simulated images of a given area are compared with real SAR images of the same area ac...

Tourism contributes to human well-being and is recognized as a cultural ecosystem service. However, assessments of landscape potential for tourism tend to be very general. Therefore, this study proposes a method that takes into account both the complexity of landscape and the behavior of tourists. We introduce a new approach that encompasses both h...

Tourism and recreation opportunities are included in the most of the existing ecosystem services (ES) classifications, usually as one of cultural services. The assessment of ES in tourism and recreation is conducted both in the field of natural and social sciences, but existing studies rarely combine these two aspects together. This paper aims at i...

In the tourism studies literature, wilderness has been addressed from two perspectives. From the first, human, perspective wilderness is a social, subjective construction that exists only in the mind of its users. From the second, ecological, perspective it is a material, objective reality. Here, we compare these two perspectives based on data coll...

La cartografía de zonas quemadas se ha realizado en Asturias con un análisis multitemporal de imágenes Landsat desde el año 1977. Su validación con datos de campo refleja un acuerdo > 80% para incendios >10 ha. La cartografía obtenida permite obtener múltiples análisis GIS y mapas, como los mapas de recurrencia y las zonas probables de intencionali...

In this study we use ALOS PALSAR satellite data to classify land cover using a decision tree algorithm. We apply polarimetric decomposition methods to coherence and covariance matrices obtained from the data and then use threshold values to classify terrain. We evaluate the influence of speckle filter and decomposition window sizes on the threshold...

The aim of the paper is the critical analysis of the current state of development of sailing facilities - marinas and berthing sites on the shores of the Great Masurian Lakes (Poland). The research is both of quantitative and qualitative character. Facilities and their capacity were counted and mapped. Field observations focused on how and by whom...

In the last few years, large-scale forest fires have increased their importance due to factors like the expansion of wildland urban interface, poor landscape and forest management and arson fires. These “Mega-fires” are constituted by interacting simultaneous fires with extreme fire behaviour across a large geographic area, they usually cross owne...

In order to describe relations between tourism and landscape, it is important to operate within two scopes. The first is landscape potential and the second – the way it is used by tourists. In the paper, the problem of dynamic and diversity of tourist nature-based activities was addressed. Although the problem is of primary character, it remains po...

STRESZCZENIE: Na całym świecie obserwuje się rosnące zainteresowanie kulturowymi świadczeniami ekosyste-mów. Jakkolwiek znaczenie tej grupy świadczeń dla jakości życia ludzkiego jest niepodważalne, ten zakres badań pozostaje słabo rozwinięty tak pod względem metodycznym jak i teoretycznym. Turystyka i rekreacja są zazwyczaj włączane do grupy świadc...

The paper describes a problem of application of GIS tools and RS materials in research on tourism and recreation. The problem is discussed on the basis of the concept of ecosystem services. Focused on human-nature relations, it deserve social and natural sciences methods to be joined. The paper discusses the problems of scope (natural, social) and...

Satellite remote sensing is one of the main sources of information on natural environment and the processes occurring on the surface of the Earth. Satellite images of different spatial, spectral and radiometric resolution, enable the acquisition of spatial information which may be interpreted directly, or may be used in processes of mathematical mo...

The aim of the performed research was to determine source areas of the nitrogen pollution connected with agricultural activities on the catchment level in Poland in period of 2007 – 2010. National Water Management Authority in Poland uses the elaborated methodology to fulfill requirements of Nitrate Directive and Water Framework Directive. Multicri...

The aim of the performed research was to determine catchments under the nitrogen pressure in Poland in period of 2007-2010. National Water Management Authority in Poland uses the elaborated methodology to fulfil requirements of Nitrate Directive and Water Framework Directive. Multicriteria GIS analysis was conducted on the base on various types of...

The intensively cultivated zones are consider as a potential source areas of the non-point nitrate pollution of the surface and groundwater water due to intense fertilization. In order to control and reduce the nitrogen pollution of water the European Union has obliged its members to define zones which the outflow of nitrates from the agricultural...

In many quartzitic slopes in the NW of the Iberian Peninsula there is a high topsoil stoniness which produces a random surface roughness. The surface roughness is one of the control parameters in the signal of Synthetic Aperture Radar (SAR) images. In this work we test the use of the SAR images for distinguishing and mapping areas with different su...

A cartographic method based on satellite images was completed in order to analyse the evolution of soil erosion in areas under humid climate conditions that experience frequent small forest fires. The method uses indicators, recognisable in the images, for the spatial and temporal analysis of the soil erosion status in burnt areas where the vegetat...

Riesgos Naturales en Asturias: desprendimiento de rocas, deslizamientos superficiales, grandes movimientos en masa, aludes, inundaciones e incendios forestales.

The launch of the MODIS sensor has powered the works focused on the attainment of the atmos- pheric Water vapor (W) and the Land Surface Temperature (LST) at global scale from its data in the last years. However, these global products are not enough accurate at regional scale, where a higher precision is necessary. So, in this paper we propose to e...