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Wyszukujesz frazę "land cover" wg kryterium: Temat


Wyświetlanie 1-9 z 9
Tytuł:
Accuracy of the soil sealing enhancement product for Poland
Autorzy:
Krówczyńska, Małgorzata
Soszyńska, Agnieszka
Pabjanek, Piotr
Wilk, Ewa
Hurbanek, Pavol
Rosina, Konstantin
Powiązania:
https://bibliotekanauki.pl/articles/1052829.pdf
Data publikacji:
2016-09-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
soil sealing
impervious surfaces
land cover
Polska
Opis:
Increasing urbanization results in constant enlarging of the artificial area closed to water infiltration. In 2006–2008, the Soil Sealing Enhancement (SSE) database was the part of the GMES Fast Track Service on Land Monitoring. The accuracy of the final product set by the authors should reach at least 85%. Orthorectified high resolution aerial photos of Poland were used to develop reference data constituting 20,000 random samples around the country. In each sample, the points were classified into three possible surface classes: natural, artificial and semi-sealed. Comparison of reference data to original project statistics revealed the values of accuracy, commission and omission errors in the SSE dataset. Although, SSE accuracy in Poland fulfils the criteria set by SSE authors with overall accuracy of 99.5%, the individual analysis for each category reveals many weaknesses. Preliminary interpretation of mistakes leads to the conclusion that the spatial resolution of pictures used in the SSE project is insufficient. In several cases, validation proved that omission errors were made in relation to construction sites or recently constructed buildings. It should be stated that the accuracy of SSE product for Poland should be treated as the maximum value of impervious surfaces.
Źródło:
Quaestiones Geographicae; 2016, 35, 3; 89-95
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transformation of the landscape structure of the selected testing grounds in the tri-city agglomeration in the years 1985–2012
Autorzy:
Korwel-Lejkowska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1050841.pdf
Data publikacji:
2020-03-31
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
land cover structure
suburbanisation
Tri-city Agglomeration
Polska
Opis:
The aim of the research was to define the scale and directions of transformation of the selected forms of land cover in the surroundings of the intra-urban areas of the Tri-city Agglomeration (Poland), combined with simultaneous testing of the usefulness of the index of convergence of structures for analysing changes in the structure of land use. The analysis was made on the basis of data from topographic maps on a scale of 1:10,000 and digital data from BDOT10k for a period of 28 years. In the areas of major changes, the scale and directions of changes between particular types of land cover were determined. Negative natural effects expressed, among other things, by the deteriorating proportion between the biologically active and built-up areas were indicated.
Źródło:
Quaestiones Geographicae; 2020, 39, 2; 31-42
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GIS-based land cover analysis and prediction based on open-source software and data
Autorzy:
Dawid, Wojciech
Bielecka, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/15805022.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
land cover change
prediction
MOLUSCE
CA-ANN
open data
Opis:
The study aims at land cover prediction based on cellular automata and artificial neural network (CA-ANN) method implemented in the Methods Of Land Use Change Evaluation (MOLUSCE) tool. The Tricity region and the neighbouring counties of Gdański and Kartuzy were taken as the research areas, and coordination of information on the environment (CORINE Land Cover, CLC, CLMS 2022) data for 2006, 2012 and 2018 were used to analyse, simulate and predict land cover for 2024, the next reference year of the CORINE inventory. The results revealed an increase in artificial surfaces, with the highest value during the period 2006–2012 (86.56 km2). In total, during the period 2006–2018, the growth in urbanised area amounted to 95.37 km2. The 2024 prediction showed that artificial surfaces increased by 9.19 km2, resulting in a decline in agricultural land.
Źródło:
Quaestiones Geographicae; 2022, 41, 3; 75-86
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Franziscean cadastre in landscape structure research: a systematic review
Autorzy:
Dolejš, Martin
Forejt, Michal
Powiązania:
https://bibliotekanauki.pl/articles/1051010.pdf
Data publikacji:
2019-03-31
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
landscape reconstruction
land use land cover
historical maps
stable cadastre
Franciscan cadastre
Opis:
Historical and archival sources are of cardinal importance in landscape research addressing the processes and course of landscape changes in European regions. The Franziscean cadastre from the 19th century is among the most widely used historical sources in Central Europe. We identified 1440 records, finally providing 104 articles reporting the use of the Franziscean cadastre for in-depth analyses in order to identify (i) the practice of the cadastral data processing, (ii) purpose and spatial extent of the study, (iii) use of complementary sources and (iv) particular land use/land cover classes under study. We have found the increasing attention towards the Franziscean cadastre as a source for landscape research reflected by the doubling number of records in the past decade with majority of the case studies located in Czechia (79), followed by Austria (9) and Italy (3). We have identified the trends in the use in landscape trajectory research and application to hydrology, agriculture and forestry. As regards the data processing, several  issues connected with the methodology or design of the records were found (e.g. geographic information system processing description and data source specification). We further problematize the suitability of the supplementary data used and conclude our review with a set of recommendations to contribute to the discussion on the methodology of landscape reconstruction with historical datasets.
Źródło:
Quaestiones Geographicae; 2019, 38, 1; 131-144
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial-temporal dynamics land use/land cover change and flood hazard mapping in the upstream citarum watershed, west Java, Indonesia
Autorzy:
Yulianto, Fajar
Suwarsono, Suwarsono
Nugroho, Udhi Catur
Nugroho, Nunung Puji
Sunarmodo, Wismu
Khomarudin, Muhammad Rokhis
Powiązania:
https://bibliotekanauki.pl/articles/1050869.pdf
Data publikacji:
2020-03-31
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
land-use/land-cover
flood hazard
remote sensing
Citarum watershed
West Java
Indonesia
Opis:
This study presents the information on the dynamics of changes in land use/land cover (LULC) spatially and temporally related to the causes of flooding in the study area. The dynamics of LULC changes have been derived based on the classification of Landsat imagery for the period between 1990 and 2016. Terrain surface classification (TSC) was proposed as a micro-landform classification approach in this study to create flood hazard assessment and mapping that was produced based on the integration of TSC with a probability map for flood inundation, and flood depth information derived from field observation. TSC as the micro-landform classification approach was derived from SRTM30 DEM data. Multi-temporal Sentinel-1 data were used to construct a pattern of historical inundation or past flooding in the study area and  also to produce the flood probability map. The results of the study indicate that the proposed flood hazard mapping (FHM) from the TSC as a micro-landform classification approach has the same pattern with the results of the integration of historical inundation or previous floods, as well as field investigations in the study area. This research will remain an important benchmark for planners, policymakers and  researchers regarding spatial planning in the study area. In addition, the results can provide important input for sustainable land use plans and strategies for mitigating flood hazards.
Źródło:
Quaestiones Geographicae; 2020, 39, 1; 125-146
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing the relationship of lst, ndvi and evi with land cover changes in the lagos lagoon environment
Autorzy:
Alademomi, Alfred S.
Okolie, Chukwuma J.
Daramola, Olagoke E .
Agboola, Raphael O .
Salami, Tosin J.
Powiązania:
https://bibliotekanauki.pl/articles/1050894.pdf
Data publikacji:
2020-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Coastal Environment
Remote Sensing
Land Cover
LST
NDVI
EVI
Lagos Lagoon
Opis:
The Lagos Lagoon is under increased pressure from growth in human population, growing demands for natural resources, human activities, and socioeconomic factors. The degree of these activities and the impacts are directly proportional to urban expansion and growth. In the light of this situation, the objectives of this study were: (i) to estimate through satellite imagery analysis the extent of changes in the Lagos Lagoon environment for the periods 1984, 2002, 2013 and 2019 using Landsat-derived data on land cover, Land Surface Temperature (LST), Normalised Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI); and (ii) to evaluate the relationship between the derived data and determine their relative influence on the lagoon environment. The derived data were subjected to descriptive statistics, and relationships were explored using Pearson’s correlation and regression analysis. The effect of land cover on LST was measured using the Contribution Index and a trend analysis was carried out. From the results, the mean LSTs for the four years were 22.68°C (1984), 24.34°C (2002), 26.46°C (2013) and 28.40°C (2019). Generally, the mean LSTs is in opposite trend with the mean NDVIs and EVIs as associated with their dominant land cover type. The strongest positive correlations were observed between NDVI and EVI while NDVI had the closest fit with LST in the regression. Built-up areas have the highest contributions to LST while vegetation had a cooling influence. The depletion in vegetative cover has compromised the biodiversity of this environment and efforts are required to reverse this trend.
Źródło:
Quaestiones Geographicae; 2020, 39, 3; 111-123
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics of land cover change in the Anambra River Basin of Nigeria and implications for sustainable land management
Autorzy:
Njar, Nnanjar G.
Iheaturu, Chima J.
Inyang, Utibe B.
Okolie, Chukwuma J.
Daramola, Olagoke E.
Orji, Michael J.
Powiązania:
https://bibliotekanauki.pl/articles/52575326.pdf
Data publikacji:
2024
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
land cover
neural network
cellular automata Markov model
population growth
Sustainable Development Goals
Opis:
Land cover change and its consequences such as environmental degradation and biodiversity loss pose significant global challenges, including in Nigeria’s Anambra River Basin. This study focuses on monitoring, predicting and understanding land cover changes in the basin from 1987 to 2018, with projections up to 2030. It explores the intricate relationship between population growth and land cover dynamics, aiming to contribute to sustainable land management practices and align with the Sustainable Development Goals (SDGs) for 2030. Using a combination of neural network classification and the CA-Markov model, the study analyses historical land cover data to identify significant transformations. Between 1987 and 2018, bare lands increased by 29%, vegetation increased by 14%, built-up areas increased by 128% and waterbodies increased by 10%, whereas there was a 58% decline in the extent of wetlands. The most significant transformation occurred in the wetlands, with a total of 1819.46 km2 being converted to various land cover types. The results demonstrate remarkable shifts characterised by rapid urbanisation, substantial wetland loss and a decline in vegetation cover. Expectedly, population growth is found to be closely linked to the expansion of built-up areas while negatively impacting other land cover types. These findings underscore the urgent need for sustainable land management strategies that balance the demands of growing populations with the preservation of natural ecosystems and biodiversity. Furthermore, the study provides future projections that offer crucial insights for decision-makers involved in land use planning, biodiversity conservation and sustainable development.
Źródło:
Quaestiones Geographicae; 2024, 43, 1; 179-195
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential influence of urban sprawl and changing land surface temperature on outdoor thermal comfort in Lagos State, Nigeria
Autorzy:
Obiefuna, Jerry N.
Okolie, Chukwuma J.
Nwilo, Peter C.
Daramola, Olagoke E.
Isiofia, Lawrence C.
Powiązania:
https://bibliotekanauki.pl/articles/1050781.pdf
Data publikacji:
2021-03-31
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Landsat imageries
land cover changes
heat stress
outdoor thermal comfort
universal thermal climate index
Opis:
The continuous monitoring of the relationship between land surface temperature (LST) and land cover change is imperative for an inquiry into the potential impact of LST on human well-being, including urban outdoor thermal comfort in Lagos State, Nigeria. Using Landsat imagery, this study assessed land cover and LST changes from 1984 to 2019. Land cover was extracted, LST was determined from Landsat imageries and the land cover changes were linked to LST using the contribution index (CI). Afterwards, the universal thermal climate index (UTCI) was calculated to determine the heat stress levels. Findings confirm the presence of urban sprawl and new growth areas in previously rural Local Government Areas (LGAs) eastward, northward and westward of Lagos metropolis and in regions which lie on the fringe of the state’s border with Ogun State. Also, a very strong link between high LST intensities and increasing concentration of urban areas in rapidly growing LGAs has been observed. This link further confirms the increased warming of the state, with an increase in mean LST of 2.16°C during 1984–2019. The UTCI which was used to gauge the influence of LST on outdoor thermal comfort ranged from moderate to strong heat stress levels. This study helps to strengthen the case for definite policies and actions which should be aimed at achieving moderate urban development through increased urban tree canopy/green infrastructure provision and carbon sequestration activities in urban design/landscape design, in Lagos State.
Źródło:
Quaestiones Geographicae; 2021, 40, 1; 5-23
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impacts of land use change on landscape structure and ecosystem services at local scale: A case study in central Portugal
Autorzy:
Nunes, Adélia
Ornelas, Alexandre
Vieira, Pedro
Dias, Ângela
Martins, Bruno
Powiązania:
https://bibliotekanauki.pl/articles/52496004.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
local land use/cover changes
metrics
fragmentation
ecosystem services
Lousã municipality
Portugal
Opis:
This study aims to evaluate land use and land cover (LULC) changes and associated impacts in the landscape structure and ecosystem services (ES) value in Lousã municipality, in Central Portugal. The results show that significant changes in LULC were recorded over the study period (1974–2018). Agricultural abandonment, expansion of woodland due to the promotion of the eucalyptus (EU) monoculture (chiefly Eucalyptus globulus), the invasion of exotic species (mainly Acacia dealbata) and the increase of built-up areas are the most significant changes that have shaped the landscapes of the study area. The analysis also revealed that the mean patch size has decreased whereas the number of patches increased. The results showed that although the EU and deciduous forest (DF) increased the ES value, the overall total ES value fell around 10% between 1974 and 2018, mainly due to the decrease in the supply of agricultural goods. Studies of this kind on local rural landscapes are vital when it comes to devising appropriate land management policies for the landscape level by considering the interaction between each element for sustainable development.
Źródło:
Quaestiones Geographicae; 2023, 42, 1; 43-57
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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