Navegando por Assunto "Geoprocessing"

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Acesso aberto (Open Access)
Análise de uso e ocupação do solo no assentamento Paulo Fonteles no distrito de Mosqueiro, Belém-PA
(Universidade Federal do Pará, 2022) MAGALHÃES, Társis Ney Castelo Branco Barros; SIMÕES, Aquiles Vasconcelos; SOARES, Daniel Araújo Sombra
The urbanization process without proper planning has contributed to an increase in the formation of peripheral areas and a decrease in people's quality of life, resulting in a series of socio-environmental problems. In this context, there is also the formation of short marketing circuits as marketing alternatives based on the logic of agroecology, as is the case of the Group for Agroecological Consumption (GRUCA). The objective of the work, therefore, was to analyze the use and occupation of the soil specifically in the location of the Settlement Paulo Fonteles, one of the main partners of GRUCA, during the years 2017 and 2018, through the use of geoprocessing techniques and environmental analysis. The methodology consisted of analyzing Landsat 8 images, OLI sensor, where 7 classes were defined: 1- Native Vegetation; 2- Secondary Vegetation; 3- Undergrowth; 4- Agriculture and Small Animal Breeding; 5- Exposed Soil; 6- Residential Area; 7- Hydrography. As a result, it can be stated that the use of geoprocessing techniques and environmental analysis are of paramount importance to follow the narratives and local scenarios. Concluding that even in a short period of time, it was possible to notice significant environmental changes in relation to the remaining area of native vegetation (legal reserve area greater than 80% in both years, decrease of 2% in arable areas) and soil exposed without significant changes, where it was possible to associate, in addition to the years analyzed (2017 and 2018) by the images, also to the current scenario (2022) observing the Rural Environmental Registry (CAR) platform.
Acesso aberto (Open Access)
Análise integrada da paisagem e processos de erosão costeira na ilha de Atalaia, Salinópolis, Pará
(Universidade Federal do Pará, 2024-03-27) SOUZA, Ewerton Müller da Silva; ANDRADE, Milena Marília Nogueira de; http://lattes.cnpq.br/1930321094483005; https://orcid.org/0000-0001-5799-7321
The study aims to analyze the landscape and erosion susceptibility processes on Atalaia Island, Salinópolis, Pará, as a basis for coastal management policies. The objective unfolds in examining the coastline position between 2002 and 2022, identifying coastal dynamics through geoindicators, analyzing landscape units, and the degree of susceptibility to erosion on the island. To achieve the objectives, the study area was divided into three sectors: Espadarte, Atalaia, and Sofia. The materials and methods used include satellite images for a twenty-year multi-temporal analysis, with polygon change analysis techniques, areal and linear rates. For this assessment of coastal changes, the Digital Shoreline Analysis System (DSAS) plugin was used in the Geographic Information System environment of ArcMap 10.5. The use of geoindicators was granted through field sheets with the identification of natural or anthropogenic elements that pointed to the movement of the coastline. For the landscape analysis, the theoretical basis of landscape geoecology and the use of geoprocessing to generate a map of landscape units were used. The study revealed areas of high susceptibility with 47,798m², mainly in sector A, in this sector, geoindicators such as the front strip of vegetation modified by erosion (44) and the presence of retaining walls and other constructions in contact with the beach arch or on the surface of estirance (64) stand out. The areas of moderate susceptibility were present, prominently in Sector B, with an area of 66,950m², in this sector, the geoindicators of water/sewage piping or energy poles, located on the beach arch in a situation of destruction by physical agents (54) and the presence of retaining walls and other constructions in contact with the beach arch or on the surface of estirance (62) stand out. The areas of low susceptibility to erosion were present, most evidently, in Sector C, with an area of 341,274.1m², in this sector, the geoindicator related to the width of the post-beach/sandy berm surface (70) stands out. The results of the landscape analysis allowed the understanding of the structure and functioning of the fluvio-marine plain, urban areas, open areas, moving dunes, and beach and post-beach. The investigation offers a dynamic perspective on the erosion processes of Atalaia Island from the employed methodology, thereby, the results indicate the need for more effective coastal management strategies, underlining the importance of an integrated approach that considers both physical and socioeconomic aspects to mitigate adverse impacts on local communities and the ecosystem.
Acesso aberto (Open Access)
Cidades resilientes, áreas verdes e adaptação às mudanças climáticas: uma contribuição ao cadastro ambiental urbano no município de Barcarena–Pa
(Universidade Federal do Pará, 2024-03-06) PAIVA, Bárbara Souza; SOARES, Daniel Araújo Sombra; http://lattes.cnpq.br/6446474471044694; https://orcid.org/0000-0002-5208-2429; ROCHA, Gilberto de Miranda; http://lattes.cnpq.br/2436176783315749; https://orcid.org/0000-0002-2363-4335
This research aims to contribute to the discussion on resilient cities adapted to climate change in the face of global warming and El Niño. In this context, a strategic resource for addressing this reality is the use of green areas as nature-based solutions, due to their environmental and social benefits. This study analyzes land use planning, vegetation, alignment of environmental policies, the municipal Master Plan, the institutionalization of the 2030 Agenda for Sustainable Development's 17 Sustainable Development Goals (SDGs 11, 13, and 15), and adaptation to the New Urban Agenda adopted by the management of the municipality of Barcarena, PA. To do so, a methodology of systematic literature review was employed on urban planning, environmental management, green areas, nature-based solutions, environmental legislation, global and local agendas, and the theme of resilient cities in adaptation and mitigation to climate change. In order to understand the territory, the study produced primary data through the mapping of Land Use/Land Cover (LULC) in the thirty neighborhoods of the municipality and its surroundings (approximately 3 km) between 2016 and 2023. Remote sensing techniques and geoprocessing were used, processed in Google Earth Engine and QGIS software for spatial analysis, statistics, cartographic productions, graphs, and area calculations. Current urbanized area data show that vegetation has decreased and occupies 144.56 km2 (54% of the total area). Hydrography remained stable at 57.48 km2 (representing 22% of the total). Exposed soil increased to 26.22 km2 (10%). The urbanized area grew and occupies 17.62 km2 (7%). The current industrial-mining-port complex covers 18 km2 (7%). Regarding the 30 neighborhoods, current data shows that vegetation has decreased and occupies 21.36 km2 (41.51% of the total area). The urbanized area expanded and occupies 18.94 km2 (36.80%). Exposed soil increased to 11.15 km2 (21.67%). Meanwhile, hydrography remained unchanged at 0.01 km2 (0.02%). The study reveals a Vegetation Coverage Index (VCI) of 10.97%, indicating a decline in greenery, and low thermal comfort with the Vegetation Coverage Heat Index (VCHI) at around 9.66 m2/inhabitant, has heat islands. The research proposes as a product: data, maps, and methodology for the elaboration of the Urban Environmental Registry, to contribute to the alignment of municipal management with the State Plan for the Recovery of Native Vegetation and with the Decade of Ecosystem Restoration. It aims to be a tool to aid in future environmental zoning and the next Master Plan Review, with actions focused on the city's resilience, in the face of worsening climate crisis, aiming to contribute to the promotion of urban environmental quality and quality of life, for local sustainable development.
Acesso aberto (Open Access)
Mudanças morfológicas em praias da costa Leste da ilha do Marajó e os níveis de vulnerabilidade à erosão
(Universidade Federal do Pará, 2021-06-29) SOUSA, Maria Bárbara Pereira de; RANIERI, Leilanhe Almeida; http://lattes.cnpq.br/3129401501809850; https://orcid.org/0000-0002-9870-4879
The coastal zone is a transition area between the sea and the continent, being one of the most vulnerable geographic spaces on the planet. In view of this, the assessment of morphological changes and coastal vulnerability to erosion is essential, as it contributes to the planning of protective and mitigating actions against impacts that occur on the environment, whether natural or anthropic. Thus, the work aims to verify the morphological changes in beaches on the east coast of Ilha de Marajó/PA and their levels of vulnerability to erosion at different time scales. For this purpose, two field campaigns (dry and rainy seasons) were carried out at Barra Velha beach (municipality of Soure) and Praia Grande (municipality of Salvaterra). The methodology consisted of a semi-quantitative analysis, determined by parameters of human and natural occupation evaluated on the beaches. Remote sensing techniques (medium period data) and in situ data collection (short period data) were used. According to the results obtained, Barra Velha beach was classified as dissipative in the two periods studied and most profiles topographic showed an erosive trend from the dry to the rainy period. Praia Grande showed behavior of intermediate to reflective beaches in both the dry and rainy seasons. The sedimentary accretion phase of this beach occurred during the rainy season, reflecting an atypical pattern for beach morphodynamics. Barra Velha beach exhibited moderate erosion vulnerability in the northwest sector and high vulnerability in the southeast sector, mainly due to the high erosion rate over the 16 years studied. Praia Grande, on the other hand, presented a moderate degree of vulnerability to erosion, being considered a more stable beach, combined with coastal protection works. On both beaches, the coastal risk was low due to the low level of occupation close to the coastline. It is believed that the results of this research can contribute to future studies on the theme of vulnerability to erosion in areas that are little or very anthropized and, for possible actions of coastal management in the Amazon region, considering their environmental particularities.
Acesso aberto (Open Access)
Novas centralidades na malha urbana da região metropolitana de belém: estudo aplicado ao espaço da rodovia Augusto Montenegro
(Universidade Federal do Pará, 2013-04-01) GUIMARÃES, Gisele Joicy da Silva; LIMA, José Júlio Ferreira; http://lattes.cnpq.br/5176390429456548
In this dissertation are identified centers and sub-centers from the perspective of Space Syntax and empirical analysis uses and values of urban land. The Centre, as explanatory category of urban form is characterized by identifying a single core composed of more integrated way in the urban system, while the sub-centers are connected to this core through arrangements morphological relatively less integrated than the Center. Using such an approach, we carried out the investigation of the centrality applied to recent economic and spatial transformations of the Região Metropolitana de Belém (RMB), focusing on the area of Rod. Augusto Montenegro, called "Nova Belém". Considering the important role of real estate developers in the process of urban recovery, we sought to understand the economic growth experienced by this settlement and at the same time, view their gradual consolidation as a new real estate space, possibly a new metropolitan center. This research also appropriates the theory of urban sprawl to analyze the creation of centers, subcenters and centralities are products of daily movements along the main roads of the urban area, raising the question of accessibility decisive factor in the differentiation of Use and land value in RMB. The centrality is taken, as well as a specific condition that the settlements might acquire as a result of the combination of two factors: i) the attraction and concentration of land uses and ii) road accessibility and fluidity of the road network, taking up in view of its influence on the choices of land use.
Acesso aberto (Open Access)
Perda de cobertura florestal e políticas públicas em assentamentos de reforma agrária na Amazônia: análise do P.A Tuerê, Novo Repartimento, Estado do Pará
(Universidade Federal de Roraima, 2023) FARIAS, Monique Helen Cravo Soares; CARVALHO, André Cutrim; SANTOS, Cleber Assis dos; SILVA, Christian Nunes da
From the point of view of history, the Pará Amazon, the territorial correspondent of the State of Pará, has been undergoing a series of major transformations, especially in its frontiers. In the past, this region was a priority target for colonization programs and for the establishment of rural settlements, whose main objective was to populate remote areas of the country as a kind of geopolitical strategy. At present, however, the intensive land use dynamics on the Frontier of Pará indicates a significant increase in deforestation in areas of rural settlements. In these circumstances, inserted in the region of the Arc of Deforestation, there is the municipality of Novo Repartimento, state of Pará, which has 32 rural settlement projects in a total area of 5,596.5 km2. Among them, there is the Tuerê Federal Settlement Project, created on August 4, 1987, the first project installed in Novo Repartimento. In this context, the objective of this work is to analyze, characterize and map the contribution of Tuerê Settlement Project to deforestation in Novo Repartimento, Pará, during the period from 1985 to 2020. The land cover classification derived from MAPBIOMAS was used to identify the deforested areas in Tuerê. The results are important to show the influence that the Agrarian Reform settlement projects have on the total deforestation of the municipality, evidenced from an increase of 1,448.73 km2 in deforested areas in 35 years in the Tuerê Settlement Project.