838 resultados para Planejamento de uso da terra
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The assessment of land use dynamic can be an instrument for analysis in anthropogeomorphology, which would allow one to verify the human geomorphological actions and its various implications in changing the original morphology for the creation of a human morphology. This study aimed to consider the land use dynamics and its interference in the morphology of Cavalheiro Stream Basin. From this assessment, to understand the implications of land use in the creation of a human morphology, as well as to analyze if the current use is in accordance with the legal restrictions placed by ongoing environmental legislation and with the ability to land use. The chosen of this studied area was due to assumptions raised by Pinton (2007) for changes in the dynamic of rainwater erosion of this area caused by human actions, specially the cultivation of sugar cane in morphologies that are unfit for it. The search took as methodological support the principles that concern the General Systems Theory, trying to see the watershed as an open system. The geomorphological data, of land use and of legal restrictions to the use and occupation of land, were collected from different cartographic techniques. Besides, it was developed a sketch map of land use capacity by adapting the technique proposed by Lepsch (1983). This way, the data obtained in this survey are considered capable to provide subsidies for the identification of changes in original morphology of the Cavalheiro Stream Basin and the genesis of a human morphology, as well as conflicts and adjustments of current land use in environmental system and on the legal restrictions outlined in the ongoing environmental legislation, contributing to a proper environmental planning with the characteristics of the physical environmental system of this basin
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Due to an intense process of population growth and urban density in Americana (SP), mainly due to the development of the local textile industry after 1970, there was, concomitant to the occupation of the margin of rivers and streams, soil sealing that increased the level of superficial runoff, triggering frequent floods. Based on the analysis of these processes we investigate the conditions of one densely urbanized area of the county, the Córrego do Parque, in three time series, 1977, 1996 and 2008. Taking as the starting the characterization and spatial distribution of landscape physiography, we prepared thematic letters and synthetic maps digital scale 1:10,000 from photointerpretation of aeroframes. The thematic maps were produced by scanning with subsequent edition using the software Auto-Cad Map. Checking the data and of geographic coordinates with GPS (Global Positioning System). Regarding land use classes, we used the description of the Soil Conservation Service (1975) which allowed us to get the Curve Number parameter, which will be used in hydrologic modeling for verification of flooding (Tucci, 1989). For the process of hydrologic modeling, we used models based on Methodology Object Oriented Modeling Applied to Water Resource Systems, Viegas Filho (1999), using the computer program called IPHS1, which uses models of the Soil Conservation Service (SCS , 2004), for conversion of rainfall-runoff and the spread of excessive rain. The results indicate that increased waterproofing generated by the change in use and occupation over the past decades promoted the increased surface runoff and drainage system overload, increasing the intensity of floods
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Pós-graduação em Agronomia (Ciência do Solo) - FCAV
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Pós-graduação em Geografia - IGCE
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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The development of cities is initially nearby rivers and with the intensification of the urbanization process occurs the soil sealing, leading to an increased level of water runoff, and, consequently, in a greater number of floods. The main goal of this study is to verify the interference of land occupation in the floods of the Lavapés Stream basin, Rio Claro (SP), in five temporal series, 1962, 1972, 1988, 1995 and 2014. The characterizations of land use were made from photo-interpretation and, thus, were produced thematic maps on scale 1: 20.000. The description of the Soil Conservation Service, 2007 was the basis for the classification of land use, thus achieving the CN parameter (Curve Number) used in hydrologic modeling done in IPHS1 program. The results indicate that soil sealing associated with the growth of the city of Rio Claro are responsible for increasing of the discharge in the Lavapés Stream basin and floods in this watershed
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The present work sought to discriminate, to map and to quantify the areas of soil use of the Stream Monte Belo watershed - Botucatu (SP), obtained by digitale images. The cartographic bases were the shart planialtimetric, edited by IBGE (1969) and the satellite images LANDSAT - 7, passages of 21/01/1999, 08/01/2003 and 23/10/2006. The Software Idrisi Andes 15.0 were used for conversion of the analogical information for digital and for determination of the vegetable coverings areas. The results allowed to verify that the SIG - IDRISI Andes 15.0 were efficient in the quantification of the areas with soil use and that the analysis of the data showed a cash progress of the areas of reforestations to the detriment of the areas of pastures, especially from 1999, 2003 to 2006, when the field areas were substituted by the forestry in his totality. In spite of that progress, the forest areas that you correspond to the Permanent Preservation Areas, They are considerably preserved. That result comes to the encounter of the tendency of expansion of the forestry, especially after the installation of cellulose industries in the area, what worsened the environmental problems originating from of the practice of the monoculture.
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O trabalho teve como objetivo levantar e analisar preliminarmente possíveis mudanças de uso da terra nos municípios de cultivo tradicional de cana-de-açúcar, bem como do seu entorno, dentro do estado de Alagoas. Foram levantados dados secundários de fontes oficiais e consultas bibliográficas, sendo avaliada a área plantada (ha) com: a) a cana-de-açúcar e b) milho + mandioca + feijão, no período de 2002 e 2007. Os resultados permitem inferir que as alterações no uso da terra são constantes dentro de Alagoas. Entretanto, ainda são necessários estudos mais aprofundados para se afirmar com propriedade à situação real de possível competição entre a cultura da cana-de-açúcar e a produção de alimentos, bem como sua relação com as áreas de pastagens, em Alagoas.
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Estudos demonstram que na agricultura familiar geralmente são determinados um conjunto de fatores específicos decorrentes das políticas públicas e desta prática, como preços agrícolas e o crédito rural, que refletem nas formas de uso da terra adotadas por estes agricultores. Portanto, o objetivo deste estudo foi analisar os fatores de uso da terra como ferramentas para subsidiar análises sobre crédito e renda para a agricultura familiar. A pesquisa foi realizada na mesorregião do nordeste paraense. As variáveis consideradas foram X13 ? ?credito e SAFs? (C_SAFs), X7 ? ?renda? (R_ENDA), X14- ?roça SAFs? (R_SAFs). Conclui-se que o fator renda/crédito condiciona a mudança no uso da terra em propriedades em estádio inicial de transição agroecológica.
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O contexto socioeconômico poderá mostrar um novo caminho a ser seguido por futuras políticas públicas as diferentes tipologias familiares. O objetivo deste estudo foi caracterizar o uso da terra e as famílias através de modelagem por meio do SPSS utilizando os testes KMO e o Barlett Test of Sphericity. Os resultados apontam que o TUT_1 tem maior concentração nas atividades de extrativismo, correspondendo a 18,25%; TUT_2 trabalham quase que exclusivamente com culturas anuais apresentando 21,75%; o TUT_3 é considerado diversificados com 12,25%; o TUT_4 apresentam atividades voltadas à venda de sua mão-de-obra apresentando 12,5% e o TUT_5, desenvolvem atividades de criação de gado com 35,25%. As famílias estudadas têm as capoeiras como seu principal recurso natural, utilizando-as como fonte de nutriente para produção de alimentos básicos e renda. Conclui-se que a tipologia possui diferentes estratos socioeconômicos e de recursos naturais, onde se pode constatar a existência de uma importante diversidade de modos de vida e de produção na região.