Navegando por CNPq "CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEODESIA::GEOGRAFIA FISICA"

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Acesso aberto (Open Access)
Estrutura e fisiologia da paisagem da praia do Areião, Ilha de Mosqueiro (Belém-PA)
(Universidade Federal do Pará, 2013-07-04) VIANA, Ivan Gomes da Silva; FRANÇA, Carmena Ferreira de; http://lattes.cnpq.br/5723672412810714
This study has guided the analysis on concept of landscape in systemic perspective and understand there’re elements that interact in complex ways. Areião Beach shows a peculiarity. Thus, the study was made to understand elements that act in southwestern part of the coastal zone of this island, where is located the search area. In one hand, physical elements are analyzed at landscape, such as waves action, wind, tides, vegetation and rainfall, in other hand, the influence of anthropogenic elements are analyzed such as the pier, the effluents and process of using and occupation. Nevertheless, some steps were followed to understand Areião Beach landscape elements in this study. The first step was to create a theoretical-conceptual reference in geography concepts, following the objectives of this work. There’s adopted the classification of Landscape Units proposed by Bertrand (1972). Later it was understood the structure of the landscape, showing the facts of study area on spatial distribution in maps. Four diferent parts were delimited at the beach. After, the seasonality was evidenced by the physiology of landscape and it was highlighted in the analysis guiding interpretations of data variability of morphology and granulometry, as well as their interactions with anthropogenic elements. At this time, the pier’s influence in landscape’s identified. It is believed that pier creates a buffer zone, where tidal action is attenuated to erosional processes that reach the beach. Furthermore, granulometric analysis and the degree of selection showed that there were two sediment transporting cell. The first before the pier, where are the profiles 1 and 2 was located. And the second one after pier, where profile 3, 4 and 5 were located. So Areião Beach was classificated in landscape units. The beach was rated on Geosssistema’s scale, being subdivided into geofacies Ie, IIa1, IIa2, IIa3, IIIe, IIIa, IVa and IVe. At each definition of geofacies we wanted to point, in a spatiotemporal scale of detail, the interrelationship between the physical and anthropogenic active in each landscape unit. The morphology and granulometri data were crossed with qualitative analysis developed through observations in locu to complete the definition.
Acesso aberto (Open Access)
Tipologias de paisagem em relação aos padrões de ocupação, uso e cobertura da terra das regiões de integração do Araguaia e Tapajós/Pa, para os anos de 2008 e 2010
(Universidade Federal do Pará, 2014) OLIVEIRA, Rodrigo Rafael Souza de; VENTURIERI, Adriano; http://lattes.cnpq.br/8968863324073508
The continuous incorporation of forest areas to the production process has caused significant changes in the landscape. In the Amazon, with the advance of the agricultural frontier, as well as the consolidation of productive activities in certain areas, these changes can be seen more clearly. This problem is also observed in Regions Integration - RI Araguaia and Tapajós, Southeast and Southwest of Pará state, respectively. Thus, this study aims to use techniques of data mining and landscape metrics to identify and analyze in an automated fashion patterns associated with different types of patterns of human occupation in the Amazon, using as cut analysis landscapes, Regions Integration of the Araguaia and Tapajós in Pará State, with data of Use and Land Cover Class Terra Project for the years 2008 and 2010., also addressing methodologies aimed at identifying possible trajectories of "evolution" of the landscape in order outlining recommendations for better use of land and natural resources, and decision making for territorial management and implementation of public policy. Therefore, it was found that IR Tapajós shows strong use dynamics and land cover between the years 2008 and 2010, mainly regarding the classes of land use. However, both for 2008 and for the year 2010 can be seen that the region still has significant portion of areas with vegetation cover. As for the IR dynamics of the Araguaia use and land cover occurs differently, with significant changes between classes during the years analyzed. However, for IR Araguaia well as for IR Tapajós increased intensity of use dynamics occurs between classes grazing, and for RI Araguaia was relative loss of areas of managed grassland (pasture clean) to areas pasture with the presence of invasive (dirty pasture) or regeneration phase. The process of automated mapping of landscape typologies using the Plugin View GeoDMA the Earth was shown to be effective and accurate, since the results obtained show consistency with the reality of each region Integration analyzed.