In recent years, it is possible to realize a change in the profile of deforestation in the Amazon, reflecting increasing rates of "little deforestations", result from the diversification of productive activities related to family farming. In the Amazon, the state of Pará stands out for its strategic location when considering the Arc of Deforestation in advance, and also for its contribution in the distribution of lands by the Agrarian Reform, whose settlements add 1.055 units and 221.04 families installed. In this context, this paper aims to investigate the influence of the settlement projects of agrarian reform have on deforestation in the city of Novo Repartimento (PA) from 2000 to 2013.
RESUMOO principal objetivo deste trabalho foi avaliar a relação chuva-cota-vazão para a bacia do rio Tapajós e sua relação com os sistemas climáticos que influenciam no seu comportamento. Utilizou-se as médias mensais dos dados fluviométricos do acervo hidroclimatológico da Agência Nacional de Águas e dados mensais de precipitação do período de 1981 à 2010 provenientes do GPCC (Global Precipitation Climatology Center). As médias de precipitação variaram entre 1474 mm até 2512 mm, onde as cabeceiras da bacia hidrográfica do rio Tapajós apresentam os menores valores e a região central da bacia os maiores valores de precipitação. A sub bacia hidrográfica que mais contribui para a vazão no rio Tapajós é a sub bacia do rio Juruena, com uma vazão anual média de 4655 m³/s. A sub bacia do rio Teles Pires tem uma contribuição anual média de 3667 m³/s. A contribuição destes afluentes e outros afluentes do Médio Baixo Tapajós, totalizam na estação fluviométrica de Itaituba a vazão anual média de 12259 m 3 /s. Os dados de cota fluviométrica mostram que os maiores valores estão na foz do rio Teles Pires (700 cm/ano), seguido da foz do rio Juruena (623 cm/ano) e do rio Tapajós na estação de Itaituba (545 cm/ano). Palavras-chave: Cota, vazão, precipitação pluviométrica, sistemas meteorológicos, bacia hidrográfica do rio Tapajós. ISSN 1678-7226 Santos, C.; Lima, A. (32 -51) Rev. Geogr. Acadêmica v.9, n.1 (vii.2015) ABSTRACTThe main objective of this study was to assess the rain-quota-flow relation for the Tapajós watershed and its relation with climate systems that influence their behavior. Were used the monthly averages of fluviometric data from hydroclimatic collection of the National Agency of Water and precipitation monthly datas of the period of 1981 at 2010 from GPCC (Global Precipitation Climatology Center). The averages of precipitation ranged between 1474 mm to 2512 mm, where the headwaters of the Tapajós River watershed presented the lowest values and the central part of the watershed, the highest precipitation values. The sub watershed that most contributes to the flow in Tapajós River is the sub watershed of Juruena River, with an average annual flow of 4655 m³/s. The sub watershed of the Teles Pires River has an average annual contribution of 3667 m³/s. The contribution of these tributaries and other tributaries of the medium low Tapajós River, totaling in fluviometric station from Itaituba the average annual flow of 12259 m 3 /s. The fluviometric quota data show that the highest values are in the mouth of Teles Pires River (700 cm/year), followed by the mouth of Juruena River (623 cm/year) and the Tapajós River Station in Itaituba (545 cm/year).
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