Navegando por Assunto "Geoprocessamento"

Agora exibindo 1 - 18 de 18

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 espacial das mudanças na cobertura e uso da terra em Santarém e Belterra, Pará, Brasil
(Universidade Federal do Pará, 2008) CASTRO, Williams Martins; VENTURIERI, Adriano; http://lattes.cnpq.br/8968863324073508; BATISTELLA, Mateus; http://lattes.cnpq.br/1337579164863601
Through a case study, this work tests how the delimitation of the study area may influence the results of multiscale analyses in spatial processes of land-use and landcover change in the Amazon. Within the municipal limits of Santarém and Belterra in western Pará State, three levels of analysis were defined. The first level encompasses a rectangular region that was arbitrarily defined as the Santarém subregion. The second level, which encompasses part of the first level, corresponds to an established agricultural settlement, defined by the set of limits of property lots designed by INCRA in the 1970’s. The third level corresponds to the zones of influence of four different roads located within the established agricultural settlement, subdivided into sub areas North and South, comprising a total of eight sub areas within the second level of delimitation. For each level of analysis, landscape metrics were calculated based on land-use and land-cover thematic maps for 1986, 1997, and 2005, also analyzed with basis on field surveys. The results show that the peculiarities of the occupation dynamics in each level allow for a better identification of patterns and processes revealed by the landscape structure. In particular, it is clear there is a continuation of processes of landscape fragmentation and expansion of intensive agriculture at different rates in distinct portions of the study area. The results obtained for the three levels of analysis are complementary, allowing for a better understanding of land-use and land-cover changes as well as their driving forces.
Acesso aberto (Open Access)
Análise espacial dos sítios monumentais do leste da Amazônia ocidental
(Universidade Federal do Pará, 2014-08-19) BARBOSA, Antonia Damasceno; SCHAAN, Denise Pahl; http://lattes.cnpq.br/9087840228167206
This study aimed to analyze the geometric enclosures located in the eastern state of Acre, using geoprocessing tools and considering environmental and cultural factors that could have influenced the decisions of social groups on the location and morphology of these archaeological sites. The approach of landscape archaeology was used, as well as GIS as an analytical tool. From the survey data of 419 geometric enclosures in eastern Acre State, the research investigated cultural patterns related to the morphology and configuration, location and orientation of sites, using statistical and methods of spatial analysis. The study concluded that patterned building techniques were used in the construction of the enclosures and their location took into account the proximity of water sources, soil types and elevation. Morphological characteristics were associated with the size and location of sites. The survey also found that most of the enclosures was constructed to mark the winter or summer solstice. Considerations were also made on the state of conservation of sites and challenges to the management of this heritage.
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)
Diagnóstico ambiental da Reserva Extrativista Marinha de São João da Ponta: subsídios para o planejamento ambiental
(Universidade Federal do Pará, 2013) FERREIRA, Welington Morais; PIMENTEL, Márcia Aparecida da Silva; http://lattes.cnpq.br/3994635795557609
The environmental assessment and analysis of the suitability of the occupation permit identification of the most critical areas in the level of degradation is extremely relevant for the establishment of conservation measures, conservation and recovery. This study aimed to conduct an environmental diagnosis of Marine Extractive Reserve of St. John the tip through GIS techniques. Analyses based on information that make up the landscape of CU, especially in the use and occupation of land and the relationships between some aspects considered in the work. The analyzes included aspects related to the use and occupation of land , the region's climate , soil composition and its geomorphology , water resources , fauna and flora , the conditions of life in the communities , the risk of erosion. It was found that the basin water resources are being degraded , the use and land cover still has degraded areas and a process of fragmentation is occurring in the landscape , especially in the vicinity of CU. Potential sources of landscape degradation of mangroves have been identified in the vicinity of the unit , compromising the quality and quantity of the supply of resources . Urbanization is the most influential factor on the CU because it exerts a pressure on the EXRES . Irregular situation with respect to legislation and environmental preservation were detected in the basin . In most of CU along watercourses use and land cover have an advanced stage of regeneration , which refers to the process of occupation of northeastern Paraense . Ecological corridors linking the upland forests are degraded and inadequate , especially for not meeting the environmental function determined by the Forest Code , predominating in these areas pastures . An efficient environmental control policy is needed for these areas, and environmental planning appropriate to guide the occupation surrounding the CU and the adoption of measures for the recovery of the same.
Acesso aberto (Open Access)
Distribuição espacial e evolução temporal da hanseníase em um município hiperendêmico no estado do Pará
(Universidade Federal do Pará, 2015) MACEDO, Geraldo Mariano Moraes de; XAVIER, Marília Brasil; http://lattes.cnpq.br/0548879430701901
Leprosy is a chronic disease which represents a serious public health problem in Brazil. It is manifested by dermatological and neurological signs and symptoms. Considering the hyperendemicity context of leprosy in the state of Pará, it is necessary use tools for designing interventions more effectively in the transmission chain of the disease. The aim of this study was to identify the pattern of spatial distribution and temporal evolution of leprosy in a hyperendemic county in the state of Pará in 2003 to 2013 period, which takes into consideration clinical, demographic and territorial aspects. This is an ecological, collective, observational and retrospective study in the city of Igarapé-Açu, in the state of Pará. Data were collected by means of detection of new cases available in SINAN and local health service files, which were later georeferenced for geostatistical analysis. 226 cases were reported and there is a slight increasing trend of males from 2009; the predominant age is between 15 and 60 years old. The overall detection rate of new cases of leprosy decreased in national, regional, state and municipal levels. With the estimate for 2020, the trend analysis showed that the Igarapé-Açu will surpass the North region. With respect to clinical characteristics, it became clear predominance of dimorphous. The multibacillary pointed a chance to occur approximately 2 times higher in men. The undetermined clinical form was predominant in children under 15 years old. There was a predominance of zero degree of disability, but the degree of disability II was still beyond recommended by the Ministry of Health, having males with a chance of approximately 3 times more likely to evolve with the degree of disability II. There was discharged as cured in most cases, however with a trend in their reduction and an increase in abandonments and transfers. The spatial distribution map of the cases presented a distribution pattern mosaic-like, with several focuses, and multibacillary prevailed throughout the length of the study area. The Kernel analysis revealed "hot areas" of higher concentration of the disease. The influence of multibacillary in the distribution of cases in the micro areas showed a positive spatial correlation with high intensive. It is concluded that the use of geoprocessing techniques in research was important for a better understanding of the epidemiology of leprosy in the region, demonstrating a constant change in the spatial distribution of leprosy in the city, in which areas with highest number of cases were identified, i.e. increased risk of illness; taking into consideration the socio-demographic and clinical factors that have generated important epidemiological and operational indicators for leprosy in the city.
Acesso aberto (Open Access)
Ecologia da paisagem da ilha do Mosqueiro, NE do estado do Pará.
(Universidade Federal do Pará, 2005-06) SALES, Gil Mendes; BORGES, Maurício da Silva; http://lattes.cnpq.br/1580207189205228
This work investigated the physical parameters of the model of landscape of the Island of the Mosqueiro, in the Northeast of the State of Pará, in the Amazon region, using itself of investigative strategies that allowed insertions in the ambient order. In this chance the activities in the area of the geoprocessing. In the ambient context had been privileged this work present products of integration and other unknown ones whose idea is of instrumentalizer the local governmental politics, aiming at to contribute for improvement of the relation of the model of antropic occupation of the landscape versus maintenance of the quality and ambient preservation, in view of the necessity of if establishing a structure of adequate development to the current scenes. The importance of the District of Mosqueiro for Belém is unquestionable. Its history and tourist potential are peculiar; beyond the one that the island if establishes as important component to the social life, artistic, cultural and sporting of the majority of the population that composes the great Belém. To the long one of the time, the Island of the Mosqueiro was scene of many landscapes transformations. The performance of litologics, pedologics local factors as to those of order, of relief and, more recently, antropics, is used to explain the current arrangement of the landscape. In this direction the ecology of the landscape is presented as important boarding integrator for the search for the agreement of the Neogenic evolution. Inside of the flowing varied ones of studies on the shaped one of the landscape, it was opted to multitemporaly evaluating the evolution of the systems natural and constructed (landscape diversity), as well as the unknown application of metric of the landscape quantifying the current landscape situation and its possible future ambient impacts, ahead of the current strategies of occupation. Moreover, it searched integration of different variable as the ground, geology, geomorphology, neotectonic and the vegetal covering and use of the land of the Island of the Mosqueiro, for the attainment of the vulnerable areas the processes that are inserted in the dynamics of the same one, the example of the erosion. Thus, in the conduction of this research in the Island of the Mosqueiro the application sources had involved: geoprocessing; digital processing of images; metric of the landscape; and statistics and algebra of maps. The primordial data to this work had been: images of the Landsat satellite; deriving cartographic products of the aerophotogrammetry survey of Belém-PA; map of detailed ground survey; geology map; and information collected in field. The applicatory ones used for the attainment of the results had been the following ones: SPRING (version 4.0/Windows); ARCVIEW (version 3.3/Windows); SURFER (version 8.0); and FRAGSTATS (version 3.0). Amongst the main results reached in the study of the landscape of the Island of the Mosqueiro, they are distinguished: maps that portray the occupation dynamics (multitemporal analysis); space analysis of the current landscape structure (application of metric of the landscape); evaluation of geomorphology changes; framework current of the tectonic regimen (tectonics imperfections); and, finally, the map of vulnerability to the erosion.
Acesso aberto (Open Access)
A efetividade das unidades de conservação e das terras indígenas na contenção do desflorestamento na Amazônia Legal
(Universidade Federal do Pará, 2010) NUNES, Tássia do Socorro Serra; FERREIRA, Leandro Valle; http://lattes.cnpq.br/8103998556619871
Was investigated the effectiveness of the Conservation Units of Integral Protection, Conservation Units of Sustainable Use and Indigenous Lands in the inhibition of deforestation in the Amazon. Data analysis was processed in GIS (Geographic Information System) in ArcGIS 9.3. The statistical model developed to test the effectiveness of Protected Areas was based on the difference between the observed deforestation in Protected Areas and deforestation in Protected Areas estimated from the surrounding five kilometers and ten kilometers of Protected Areas. It was found that in forest area by the year 2007, the Protected Areas occupy approximately 40% of the Amazon. Conservation Units of Integral Protection occupied 7.5% of the Amazon, Conservation Units of Sustainable Use occupied 11.2% of the Amazon and Indigenous Lands occupied 21% of the Amazon. Was a significant difference in the proportion of area occupied by the types of Protected Areas among the Amazonian states. It was noted also that the internal rate of deforestation in the Conservation Units of Integral Protection and in the Indigenous Lands was lower than in the Conservation Units of Sustainable Use. The internal rate of deforestation in the Protected Areas was much lower than the rate of deforestation is external to these areas in the states of Mato Grosso, Para and Rondonia. According to the statistical model of effectiveness, 62.3% of the Protected Areas studied were effective in containing the deforestation. This model is an important instrument to direct public policy planning for the conservation of the Amazon, because it indicates the protected areas most threatened by deforestation. It is essential to establish urgently the creation of more Protected Areas in the Amazon and the consolidation of existing protected areas, since it is not known how long these areas will be able to maintain without the minimum necessary for their support.
Acesso aberto (Open Access)
Influência da neotectônica sobre os arranjos geométricos dos aquíferos na Região Metropolitana de Belém – Estado do Pará
(Universidade Federal do Pará, 2004-08-31) COSTA, Francisco Ribeiro da; ABREU, Francisco de Assis Matos de; http://lattes.cnpq.br/9626349043103626
The metropolitan area of Belém (RMB) is located in a distensive segment filled by sedimentary sequences of Pirabas and Barreiras Formations (COSTA et al., 1996) which constitute one of greater ground water reservoir of Brazil (Oliveira, 2003). The aim of this work is to offer information about these aquifers units thorough using data from geology, geometry and cinematic, hydrogeology and morph tectonic, to comprehend the evolution of these units in space and time. Databank used in this work was obtained from: (1) field data; (2) information of well drilling; (3) topographic maps in scal1 1:100,000; (4) Landsat 7 images; (5) SRTM – Shuttle Radar Topographic Mission; and (6) GIS – Geographic Information System of RMB, Guajará and Marajó Bay. Softwares SPRING, Arc View and Global Mapper were used to process and treatment of data and images. Two main scales were used in this study: (1) a regional scale 1:100,000 evolving maps of Belém, Acará and Abaetetuba giving a total of 10,635 km2; and (2) a semi detail scale 1:25,000 adjusted at RMB with total of 1, 929 km2. Morph tectonic analysis showed three geomorphologic domains: Fluvial Plain Terrain, Terrain of Hills and Terrain of Small Mountains. The directions of topographic elements of terrain are compatible with the directions of the drainage net. The analysis of drainage net gave five main basin domains: (1) Coastal; (2) Marapanim River; (3) Guamá River; (4) Acará-Moju River; and (5) Pará River. Thorough this analysis was identified and defined neotectonic elements represented for lineaments from each hydrographic basin, with general directions NE-SW, NW-SE and NNE-SSW in regional scale. The RMB shows main directions in NE-SW and NW-SE with secondary trends WNW-ESE. Using projection and extension of lineaments presents in RMB, was possible to draw a two-dimensional model, which form three-dimensional blocks. Were defined two kinds of sectors based on distinct aspects of blocks. Sector I is located in southeast and Sector II is in northeast portion of RMB. There are kinematics variations in these two sectors. Sector I has dextral moving with stretching direction NW-SE and normal faults NE-SW. In the Sector II the cinematic is sinistral with stretching direction NW-SE and normal faults NE-SW associated. 4 Correlation between water wells located in different blocks proved that geologic layers present in both blocks have distinct attitudes, probably influenced by neotectonic processes. In Sector I, the gradient is moderate 1/180 m/m in the other hand Sector II has gradient 5x bigger 1/30 m/m. The different values on gradient suggest that Sector I and II are distinct with regarding to the slope of layers. With treatment integrated of information obtained was possible to establish the stretching direction for Pirabas-Barreiras Basin in NW-SE. Normal faults related to the development of basin have trends NE-SW. These structures are potential surfaces of low pressure, being favorable places to recharging of aquifers intercepted by its. So it is necessary to be worried about the possibility of pollution in these aquifers by human activity in these places of recharge. Since the recharge areas are exposed to urban or agricultural purposes.
Acesso aberto (Open Access)
Mudanças de uso e cobertura da terra e vulnerabilidade ambiental da bacia hidrográfica do Rio Arauaí, Moju/PA.
(Universidade Federal do Pará, 2022-02-28) SANTOS, Bruna Mykaelle Pereira; SILVA, José Francisco Berrêdo Reis da; http://lattes.cnpq.br/1338038101910673; https://orcid.org/0000-0002-8590-2462
The investments that Pará started to receive from the launch of the Agroecological Zoning of Palm Oil and the Program for Sustainable Production of Palm Oil (PPSOP), in 2010, made possible the expressive expansion of the palm culture in the northeast of Pará, where it found conditions ideal climate for this. Since then, national and international companies have been installed along the highways of Pará aiming at agricultural exploitation. In this context, the Arauaí River Basin (BHRA) is inserted, in the municipality of Moju/Pará, Eastern Amazon. In view of the panorama, the present research seeks to quantify and map the spatial distribution of the levels of environmental vulnerability of the BHRA caused by human activities and natural aspects, having as main aid the Analytical Hierarchy Process (AHP) statistical methodology developed by Saaty (1980) and geoprocessing, in addition, the change in land use and cover is sought, having as a time frame the Program for Sustainable Production of Palm Oil (PPSOP) with the help of Geographic Information System (GIS) and Remote Sensing. Based on the results, it was possible to define areas with 5 different degrees of environmental vulnerability - Very Low, Low, Moderate, High and Very High, in addition to verifying that the amount of area converted to oil palm was basically the same in the pre-PPSOP and post-PPSOP period, with the change being due to the amount of area converted from primary forest to oil palm, which decreased in the post-PPSOP period.
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.
Acesso aberto (Open Access)
Resíduos sólidos urbanos, mapeamento e educação ambiental: proposta de instrumento para participação comunitária na questão ambiental no bairro da Marambaia, Belém-Pa
(Universidade Federal do Pará, 2018-12-17) PEREIRA, Moacir José Moraes; LUCZYNSKI, Estanislau; http://lattes.cnpq.br/9749970886455933; PETRACCO, Marcelo; http://lattes.cnpq.br/6834814201680920
In urban cultures, we can observe a close relationship with the consumption of products of industrial origin, which generate waste that, when not disposed of and treated properly, has a significant impact on the urban environment. The population of the district of Marambaia, located in Belém do Pará, Brazil, with more than 65,000 inhabitants, has suffered from environmental problems related to the management of Urban Solid Waste -RSU, and has sometimes contributed to the increase of this environmental problem when irregularly discard these waste. In this sense, this study presents a platform for mapping points of irregular waste disposal in the Marambaia neighborhood, using geoprocessing techniques, computational tools and stimulation of neighborhood participation through participative and collaborative mapping, as well as field and application research of questionnaires in schools. Some results show that environmental perception is a relevant form of analysis and should be considered for environmental management and education processes. For the mapping, the places with the highest presence points of irregular waste disposal are public spaces. It was possible to identify that there is an important percentage of people who choose to hire people locally called 'carrinheiros' to dispose of part of the solid waste produced in their homes, contributing to the environmental problem. In the waste disposal points identified, more than 60% of them present economically viable materials, which would allow the implementation of selective collection and recycling of materials through the creation of Green Points. Environmental education activities contributed to the development of information multipliers on the problem of solid waste in the neighborhood.
Acesso aberto (Open Access)
A resiliênca dos manguezais do estuário do rio Ceará Mirim-RN às intervenções humanas.
(Universidade Federal do Pará, 2024-09-23) AQUINO, Ronaldo Darlan Gaspar; COHEN, Marcelo Cancela Lisboa; http://lattes.cnpq.br/8809787145146228
Mangroves are recognized for being extremely sensitive to changes in the physical and chemical environment and are widely used as indicators of changes in climate, sea level, and human interference. The study area comprises the mouth of the Ceará-Mirim/RN River, located on the coast of the state of Rio Grande do Norte (RN), in northeastern Brazil. This area has a history of mangrove deforestation for implementing shrimp farming. This study aims to analyze the mangrove dynamics from 1985 to 2020. The research uses orbital remote sensing and drone images to develop a spatial-temporal analysis. The data indicates that despite the expansion of aquaculture activity from 46 ha to 183.47 ha considering active and inactive tanks, there was an increase in mangrove areas from 351 to 489 ha. Over the 35 years, aquaculture activity has mainly occupied flooded fields and apicum regions and occasionally some areas have been converted from mangrove areas. However, the expansion in mangrove areas was mostly due to the abandonment of aquaculture, which before 1985 suppressed mangroves to construct ponds. Despite severe anthropogenic interference in this delicate ecosystem, these forests have shown great resilience by recolonizing their tidal flats.
Acesso aberto (Open Access)
Sistema de informações geográficas aplicado à gestão da bacia do Caeté – nordeste paraense
(Universidade Federal do Pará, 2009-10-26) ROCHA, Mariano Araujo Bernardino da; SOUZA FILHO, Pedro Walfir Martins e; http://lattes.cnpq.br/3282736820907252
The northeastern of Pará state is one of primal centers of people and products convergence in this state. It contains the highest concentration of urban centers, and is a zone of intense agricultural activity with an advanced process of deforestation. The need for greater knowledge about of the watershed is evident, mostly because for they constitutes planning and implementation unites for a public policies, subsidized by studies, which transcends the scope of purely scientific. In Caeté watershed, located in the NE of the state, agricultural and livestock activities have been practiced with major intensity since the beginning of the century XX, which causes an environmental degradation. The primal objective of this study was an organization of a geographic database with focus on physical environment to add to an environmental diagnoses and the management of this watershed. Using the techniques of remote sensing and geoprocessing for the multitemporal analysis of use and cover of the land; the integration of this with different components of the physical environment (geology, geomorphology, pedology, precipitation, hydrometers and sedimentology); elaboration of maps of agricultural suitability of the lands and natural soil loss vulnerability and building a geodatabase. The morphometric analysis of the basin showed a low probability floods due to: the elongated shape of the basin; 57.6% of its area has flat topography; 50.1% of the basin have dispersive forms of the land. The analysis of the flow, in m³/s, using the Doppler effect (ADCP) showed values of 8.06 in the Arraial do Caeté station, 34.14 in the Tentugal station and 87.45 in the Nova Mocajuba station, for the month of June, while, for the month of September, the flow was 2.79 in the Arraial do Caeté station, 12.09 in the Tentugal station and 33.72 in the Nova Mocajuba station. The calculation of precipitation based on an interpolation of the stations Primavera, Capanema, Nova Timboteua, Ourém, Santa Luzia do Pará and Emboraí showed larger concentration in the mid-north portion of the basin, which presents rainfall between 400 and 450 mm/month. From the integrated analysis of the data of flow and precipitation is observed that the highest values of flow and precipitation occur in forested areas, while the lowest values are observed in areas with large amounts of exposed soil. This occurrence is because the flow tends to be less in upstream direction and in this portion of the basin is where founded a most propitious relief for agricultural practices which had been developed with major intensity during the process of occupation of the watershed. The permanent preservation areas occupy 4.6% of the basin and of these 37.8% is in disagreement with current environmental legislation. The increase identified in the vegetation index (NDVI) for the past 10 years, demonstrated a direct relationship with rainfall during the drier seasons. The watershed showed homogeneity in relation to agricultural suitability. It was observed that the main restricting factor at the management B was the fertility deficiency. In concerning of loss of soil natural vulnerability it was observed that the watershed in question is fairly stable, showing predominant values of vulnerability between 1.8 to 2.2. The generation of the database allowed the analysis of the maps produced and the concerned areas could be observed in more detail. Thus, the data will be available to the society to be used for the benefit of development of the region and with the possibility of update the data as new knowledge and technologies are acquired.
Acesso aberto (Open Access)
Virtualização da paisagem de bacias hidrográficas da zona de expansão urbana do município de Belém-PA por meio de cartografias temáticas digitais
(Universidade Federal do Pará, 2005-07-04) OLIVEIRA, Ricardo Alexandre Fialho de; BORGES, Maurício da Silva; http://lattes.cnpq.br/1580207189205228
The municipality of Belém (PA), located in the northeast region of the State of Pará, is characterized by having a geographical position close to the Atlantic Ocean, flat relief, low altitudes and typical climate of the Amazon (hot and rainy) where high rainfall prevails. (2,600 to 3,300 mm/year), conditioning the formation of the landscape. And this landscape is carved in rocks of the Barreiras formation and in Post-Barreiras sediments, being conditioned to neotectonic transcurrent processes, evidenced by two large groups of faults on the macroscopic scale, which cut the Tertiary and Quaternary sediments. One beam is presented with direction N05E and N60E, the other beam with direction N45-55W. These faults produce “micro-reliefs”, topics of Amazonian cities, which are often imperceptible, are important when interacting with hydrological, neotectonic and territorial occupation and space management processes. The association and/or interaction of these factors, or some of them, are the main responsible for several problems observed in Belém, regarding the use and occupation of the physical environment in the Urban Expansion Zones (ZEU) of the municipality of Belém. In this work, the landscape structure and its spatial pattern are virtualized in the Paracuri, Curuperé and Tamanduá river basins, located in urban expansion areas of the municipality of Belém, through digital thematic cartographies derived from Numerical Land Models (MNT). ). The generation of such cartographies made it possible to extract information associated with physiographic aspects and processes (natural and artificial) responsible for surface modeling in hydrographic basins. Because the three-dimensional representation of space, using geoprocessing techniques, acquires fundamental importance, when associated with applications aimed at the use and occupation of the physical environment in urban spaces of large cities, constituting valuable information for future works involving environmental aspects. , geotechnical and planning of use and occupation of the physical environment in hydrographic basins. And the integrated use of MNT's with other types of data, expanded the knowledge about the reality of the landscape, allowing to visualize the phenomena resulting from natural and anthropic interventions on the urban space, and to submit such models to evaluation.