scholarly journals Prediksi Perubahan Penggunaan Lahan dan Pola Berdasarkan Citra Landsat Multi Waktu dengan Land Change Modeler (LCM)

2021 ◽  
Vol 5 (1) ◽  
pp. 10-18
Author(s):  
Herlawati Herlawati ◽  
Fata Nidaul Khasanah ◽  
Prima Dina Atika ◽  
Rafika Sari ◽  
Rahmadya Trias Handayanto

Land use/cover greatly affect the quality of an area. Therefore, many regional planners need assistance byother fields, such as geoinformatics, computer science, environment, and others. Although prediction and forecasting have been widely studied, in regardto real conditions (geospatial)itstill needmoredevelopment, especially thoseinvolving a combination of regional types, such as urban and suburban areas. This study uses a remote sensing base and geographic information system in predicting land in the city and district of Bekasi, West Java, Indonesia. With two scenarios compared (business as usual and vegetation conservation), the model that has been created and validated (with an AUC accuracy result of 0.828) is used to predict land use change until 2030. Scenarios with vegetation conservation are able to keep green areas to switch to land types others, such as buildings and industry

2021 ◽  
Vol 11 (1) ◽  
pp. 108
Author(s):  
Juliana Nazareth de Lana ◽  
Márcio de Oliveira ◽  
Vanessa Romario de Paula ◽  
Cézar Henrique Barra Rocha

Changes in the land use and land cover in areas adjacent to water reservoirs directly affect the quality of this water. This research presents a study on the water quality in the basin of one of the most important public water supply reservoirs in the city of Juiz de Fora, Minas Gerais. The main objective of this study was to analyze the behavior of limnological parameters and the correlation with land use and land cover in the contribution basin of the Doutor João Penido reservoir (CBJPR). The methodology was based on the analysis of water quality parameters, related to water samples collected from 2012 to 2015. Six sampling points were chosen from different locations: spring, medium course, main tributaries of the reservoir and the reservoir catchment. The parameters analyzed were turbidity, total solids (TS), oxygen consumed (OC), dissolved oxygen (DO), electrical conductivity, total nitrogen (TN), total phosphorus (TP), E. Coli, temperature, pH and total dissolved solids (TDS). The Kendall’s tau test was used to analyze the correlations between the parameters of water quality, land use and land cover in the CBJPR. In general, measured parameters showed better results in spring and in reservoir catchment, showing a worse quality of the water along the tributaries and the dilution power of the reservoir. The correlations pointed to the need for protection and preservation of forests in strategic locations to ensure good water quality.


GeoTextos ◽  
2012 ◽  
Vol 8 (1) ◽  
Author(s):  
Gabriel Salles Maria de Macedo Rego ◽  
João Luis Jesus Fernandes

O trabalho em questão analisa, segundo o prisma da Geografia, a importância do patrimônio natural em ambiente urbano. Como objetivo principal, pretende compreender a percepção que os residentes na cidade de Coimbra (Portugal) têm da natureza e do papel que o património natural pode desempenhar na qualidade de vida da cidade. Para alcançar esses objetivos, inicia-se o texto com uma reflexão teórica que percorre conceitos como a topofilia e os olhares sociais sobre o ambiente e a natureza em contexto citadino. Depois, seguem-se dois procedimentos diferentes, mas complementares: (1) Como forma de registro da presença e do estado de conservação da natureza em Coimbra e da interação entre os cidadãos e o patrimônio natural naquele espaço geográfico, fez-se uma análise de campo com a montagem de um banco de dados fotográficos que representam excertos deste território; (2) Inquéritos por meio de entrevistas, em dois bairros da cidade – Vale das Flores e Monte Formoso – privilegiando adultos com idades superiores aos 30 anos. Apesar de a pesquisa ter revelado algumas contradições entre a prática e o discurso na percepção e na relação topofílica para com as áreas verdes urbanas, concluiu-se que a presença do patrimônio natural no ambiente urbano ainda se apresenta como uma questão secundária. Contudo, também se verificou que, para reforço desta relação simbólica e/ou funcional, o patrimônio natural deve estar presente em todo o contínuo urbano e não ficar restrito aos bairros mais elitizados ou aos parques. Abstract THE CITIZENS TOPOPHILIA AND THE NATURAL URBAN PATRIMONY: COIMBRA’S CASE STUDY This paper analyzes the importance of natural patrimony in the urban environment, under the prism of geography. The main objective of this study is to understand how nature is perceived in the city of Coimbra (Portugal) and the role that green areas and natural patrimony has in the quality of urban life. To achieve these objectives, this article discusses the conceptual argument about environmental perception, topophilia and the nature in the city. For this, it was used two different procedures: (1) Field analysis on the city of Coimbra with purpose to setting up a photographic database, to verify the presence, conservation and relationship to the natural patrimony inserted in urban environment; (2) Investigation through interviews in two neighborhoods of the city – Vale das Flores and Monte Formoso. The data revealed that the perception and the topophilic relationship to urban green areas are marked by the contradiction between practice and discourse. It was concluded that the presence of natural patrimony in the urban environment still present itself as a secondary issue. Moreover, it was concluded that to strengthen this relationship symbolically and/or functionally the natural patrimony must be present throughout all the continuous urban areas and should not be restricted to elite neighborhoods or parks.


2019 ◽  
Vol 11 (2) ◽  
pp. 35
Author(s):  
Peter Nkashi AGAN

Land use is the utilization and reordering of land cover for human comfort. This process disrupts the pristine state of the environment reducing the quality of environmental receptors like water, air, vegetation etc. Air pollution is introduced into the environment as a result of anthropogenic activities from commercial, industrial and residential areas. These activities are burning of fossil fuels for power generation, transport of goods and services, valorization of raw materials into finished products, bush burning, use of gas cookers, generators and electric stove etc. The introduction of pollutants into the planetary layer of the atmosphere has impacted negatively on the quality of the environment posing threat to humans and the survival of the ecosystem. In Lagos metropolis, commercial activities and high population densities have caused elevated levels of pollution in the city. This study aimed to investigate the spatial distribution of pollutant in Lagos metropolis with a view to revealing the marked spatial/temporal difference in pollutants levels over residential, commercial and industrial land uses. Commercial and industrial land uses revealed higher levels of pollutants than the residential areas. Pearson product moment correlation coefficients revealed strong positive relationship between land use and air quality in the city.


2021 ◽  
pp. 108-116
Author(s):  
E. N. Koroleva

Introduction. The issues of creating, preserving and improving the quality of green areas are relevant not only for the municipality — the city of Barnaul, but also for each urban settlement of the Russian Federation, village and settlement.Methodology. To identify numerous shortcomings in the management, a statistical analysis of the main indicators of the development of the improvement sector, the main opinions of «experts», was carried out. In order to find ways out to ensure the comfort of living for each resident of the city, a theoretical generalization is used.Results. The main geoecological characteristics of the municipality — the city of Barnaul – are described. It reflects not only the achievements of local governments in this area, but also highlights the main problem-the lack of a unified concept of landscaping. To predict the development of the city and the formation of a unified approach to landscaping, the main measures are proposed that will allow creating an up-to-date, and most importantly, allowing each resident to comfortably exist, a model for managing the field of landscaping.Analysis and discussion. The forecast estimate for the municipality — the city of Barnaul from the proposed measures for rational use of natural resources is given.Conclusions. The application of these results is not only possible, but it is also necessary to take into account the local self-government bodies when managing the geoecological processes of each city of the Russian Federation in order to achieve an optimal standard of living for the population.


2018 ◽  
Vol 62 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Shwan O. Hussein

Most cities in the world have experienced major developments in the past 20–25 years. However, research has showed that the development aspect of these cities has led to a decrease in green areas. This paper aims to assess the spatiotemporal variations of urban green areas during the period 1990–2015 with special regard to city of Erbil. The study uses a mix of fuzzy functions, linear spectral mixture analysis, and maximum likelihood classification for the classification of Landsat imagery from 1990 to 2015 to extract the four main classes of land use, namely agricultural land, vacant land, built-up land, and green vegetation. Both the classification approaches used in this research produced excellent and reliable results, as an overall accuracy of more than 80% was able to be obtained. The spatiotemporal analysis of land use within the city of Erbil shows a series of major changes between 1990 and 2015. Therefore, the results of the spatiotemporal evolution of urban greenness assessment in the Erbil region can be used both for spatial planning purposes and as an urban greenness assessment method in dry climate areas.


2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Zsuzsanna Angyal ◽  
Edit Sárközi ◽  
Ádám Gombás ◽  
Levente Kardos

AbstractThe location and development of cities has been influenced basically by various environmental factors. However, the relationship is bilateral, because not only the environment can affect the city, but the city can affect the environment in different ways, depending on recovery. This is especially true in the case of large cities such as Budapest where the different geological, geomorphological, hydrological, soil and bio-geographical conditions can be changed in very small areas, which implies that land use can be also modified as well. The aim of our study was to determine the chemical water quality of three small streams in Budapest which have same water flow and compare the field and the laboratory test results. Between many natural characteristics of these streams similarity is evident, however, several differences were found between the watersheds in terms of human land use. Statistical data analysis was performed as well, which was the aim to explore the relationship between the parameters. Overall, according to our study it can be concluded, the small streams have similar water chemical properties, but some parameters need special attention in the future, because the investigated small streams can be categorized into polluted and sometimes heavily polluted category.


2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Rubén Ortega-Álvarez ◽  
Hernando A. Rodríguez-Correa ◽  
Ian MacGregor-Fors

In this study we assessed tree species richness, density, and composition patterns along a gradient of urbanization of a megacity. Our results show that total, native, and exotic tree densities were highest in green areas where larger spaces are considered for greening purposes. Conversely, total, native, and exotic tree species richness were highest in land uses with intermediate levels of urban development (residential, residential-commercial areas). Not finding highest tree species richness in less developed urban areas suggests that cultural factors may shape the array of species that are planted within cities. Supporting this, tree composition analyses showed that green areas are comprised of different tree species when compared to the rest of the studied urban land uses. Thus, our results suggest that, to increase the ecological quality of cities, residents and managers should be encouraged to select a greater variety of trees to promote heterogeneous green areas.


2018 ◽  
Vol 16 (1-2) ◽  
Author(s):  
Tanja Maksimović ◽  
Predrag Ilić ◽  
Sanja Bajić

Urban forests are part of the public city space and have multiple significance. Various roles of greenery (health, social, aesthetic, cultural, educational, etc.) improve the quality of life in the city. Urban forests can play key roles in mitigate stormwater runoff, improve air quality, reduces noise level, store carbon, etc. The system of green areas in a continuous and dynamic interaction with the built structure in a city. Because of the above, subject of the research is determining the state of greenery in the Banja Luka area and the changes that accompany it and to suggest the planning of green areas and protect them.


Author(s):  
Mirosław Krukowski

<p>Prace z zakresu rozmieszczenia i ewaluacji zieleni w mieście w kontekście potrzeb mieszkańców mają duże znaczenie w związku z postępującym rozwojem przestrzennym miast i presją na wykorzystanie każdego wolnego kawałka gruntu. Szerzej możemy mówić tu o jakości życia w mieście, biorąc pod uwagę komponent zieleni. Warto również zwrócić uwagę, że analiza przestrzenna jakości życia w mieści jest trudnym i złożonym zagadnieniem, dlatego też rzadko jest przeprowadzana w obrębie miast. Typowe jest natomiast analizowanie jakości życia w odniesieniu do miasta jako całości, co pozwala na analizę porównawczą pomiędzy miastami. Nie daje to jednak możliwości analizy strukturalnej wewnątrz miast.</p><p>Celem pracy było zaproponowanie możliwości wykorzystania zdjęć satelitarnych z satelity Ikonos 2 oraz technik związanych z GIS dla potrzeb analizy terenów zielonych ośrodków miejskich oraz modelowania jakości życia w mieście. W artykule przedstawiono sposób integracji danych pochodzących z rejestracji teledetekcyjnej, dotyczących roślinności, oraz danych dotyczących rozmieszczenia ludności w mieście. Modelowanie kartografi czne doprowadziło do określenia rozmieszczenia przestrzennego wskaźnika jakości życia w mieście w aspekcie zieleni. W związku z tym wyniki mogą być przydatnym narzędziem w monitorowaniu i planowaniu przestrzennym.</p><p>Na podstawie zobrazowania satelitarnego Ikonos 2 wygenerowano rozkład przestrzenny znormalizowanego wskaźnika zieleni (NDVI). Było to podstawą wydzielenia dwóch klas zieleni: zieleni wysokiej (zbiorowisk drzewiastych i krzewiastych) oraz zieleni niskiej (głównie roślinność trawiasta). Aby określić wskaźnik terenów z zielenią przypadających na mieszkańców, niezbędne było wykorzystanie informacji o rozmieszczeniu ludności, którą to opracowano w formie mapy kropkowej. Określenie cząstkowego wskaźnika jakości życia przeprowadzono w polach podstawowych, a następnie zwizualizowano, używając metody izoliniowej. Proponowana metodyka dała w rezultacie przestrzenny obraz zjawiska, który stał się podstawą analizy rozmieszczenia terenów z roślinnością w odniesieniu do miejsca zamieszkania ludności Lublina.</p>


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