Navegando por Assunto "Itupiranga - PA"

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Acesso aberto (Open Access)
Carbon content in Amazonian Oxisols after forest conversion to pasture
(2009-12) SILVA JÚNIOR, Mário Lopes da; DESJARDINS, Thierry; SARRAZIN, Max; MELO, Vânia Silva de; MARTINS, Paulo Fernando da Silva; SANTOS, Elaine Rodrigues; CARVALHO, Claudio Jose Reis de
Soil plays an important role in the C cycle, and substitution of tropical forest by cultivated land affects C dynamic and stock. This study was developed in an area of expansion of human settlement in the Eastern Amazon, in Itupiranga, State of Pará, to evaluate the effects of native forest conversion to Brachiaria brizantha pasture on C contents of a dystrophic Oxisol. Soil samples were collected in areas of native forest (NF), of 8 to 10 year old secondary forest (SF), 1 to 2 year old SF (P1–2), 5 to 7 year old SF (P5–7), and of 10 to 12 year old SF (P10–12), and from under pastures, in the layers 0–2, 2–5 and 5–10 cm, to evaluate C levels and stocks and carry out separation of OM based on particle size. After deforestation, soil density increased to a depth of 5 cm, with greater increase in older pastures. Variation in C levels was greatest in the top soil layer; C contents increased with increasing pasture age. In the layers 2–5 and 5–10 cm, C content proved to be stable for the types of plant cover evaluated. Highest C concentrations were found in the silt fraction; however, C contents were highest in the clay fraction, independent of the plant cover. An increase in C associated with the sand fraction in the form of little decomposed organic residues was observed in pastures, confirming greater sensitivity of this fraction to change in soil use.
Acesso aberto (Open Access)
Castanheiros, agricultores e índios: conflitos pelos usos da terra em castanhais do médio Tocantins (1948-1980)
(Universidade Federal do Pará, 2009) CARNEIRO, Aldair José Dias; FARIAS, William Gaia; http://lattes.cnpq.br/2553754490715388
This paper pays attention for the symbolisms that the grows of chestnut trees from the Medium Tocantins acquired during more than a half century of occupation since, at least, 1892, mainly on the limits from the towns of Marabá and Itupiranga/Pará. For someones, the groves of chestnut trees lands were only sources of income, important way to profit. Those were the motives because the land and the forest products were succesfully appropriated, mainly by ranchers, sellers of chest nuts and municipal representatives. Fore others they constituted inerent spaces for life and which natural environment revelated an essence of a cultural production as the case of the familiar farmers tradicionally installed on little villages and isolated localities. Those adequated traditions on the occupied spaces and developed small agricultures taking as a base forest products as a complement for their subsistences. Embased by written resources and analyzing the memory about the grows of chestnut trees from the medium Tocantins detached the period between 1948 and 1980, with the purpose to visualize the causes and consequences from this antagonism of ideas and points of view relating them with the ways of dealing with the soil and the resources got available by them.
Acesso aberto (Open Access)
Variação lexical em seis municípios da mesorregião sudeste paraense
(Universidade Federal do Pará, 2013-04-25) GOMES, Edson de Freitas; RAZKY, Abdelhak; http://lattes.cnpq.br/8153913927369006
This thesis aims to identify and map the central lexical variation of the portuguese spoken in rural six counties mesoregion of Southeastern Pará: Curionópolis, Itupiranga, Santana do Araguaia, São Félix do Xingu, São João do Araguaia and Tucuruí. This mesoregion presents considerable importance in the socio-political-economic-cultural scenario in the state of Pará. The research is guided by assumptions of dialectology, under the method of geolinguistics. This work integrates project GeoLinTerm, but with specific research project ALiPA shaft. It was done a roundup of some work done over the geolinguísticos studies. The methodology involved the application of a questionnaire adapted, containing fourteen semantic fields, to be answered by informants previously selected. The data collected in six counties object of research records contain speech of 22 informants in rural Southeast mesoregion Paraense, within the methodological profile established by ALiPA. After collection, data processing was with the selection, transcription, preparation of 30 letters and description the results. Of the 256 questions in the questionnaire, we selected the 30 most frequent and greater variation to be developed in the cards. Then the letters, show occurrences by location, gender and age.