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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

Uso de lodo de esgoto estabilizado na revegetação de um solo decapitado / Use of stabilized sewage sludge in revegetation of a decapitated soil

Ricci, Alexandro Batista 12 November 2008 (has links)
Orientador: Durval Rodrigues de Paula Junior / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola / Made available in DSpace on 2018-08-12T21:33:04Z (GMT). No. of bitstreams: 1 Ricci_AlexandroBatista_D.pdf: 1355098 bytes, checksum: b003af1193ae2d4026bfa1abe3a4e4df (MD5) Previous issue date: 2008 / Resumo: Uma das conseqüências do crescimento da população urbana foi o surgimento de diversos problemas ambientais nos centros urbanos brasileiros, sendo a deterioração dos recursos hídricos e a degradação dos solos, ocasionadas pela disposição inadequada dos diversos tipos de resíduos gerados pelas cidades, as principais. Com o objetivo de avaliar o uso de um lodo de esgoto compostado com resíduos de roçagem de gramíneas do município de Mogi Guaçu - SP, na recuperação de um Latossolo Vermelho-Amarelo decapitado, utilizaram-se quatro dosagens do composto produzido (0, 20, 40 e 80Mg.ha-1), aplicadas de forma parcelada antes do plantio das árvores de espécies nativas. Os efeitos foram avaliados nos atributos químicos e físicos do solo, bem como nos parâmetros biométricos das espécies arbóreas utilizadas no reflorestamento. Os resultados permitiram concluir que o lodo de esgoto compostado apresentou características para atender a legislação vigente. O composto não modificou significativamente os atributos físicos analisados no solo do local, bem como o seu teor de carbono orgânico, sendo que apenas a dosagem de 80Mg.ha-1 promoveu um aumento do teor de fósforo, cálcio, magnésio, potássio, manganês, ferro e pH do solo, afetando positivamente sua fertilidade. O desenvolvimento da composição do reflorestamento escolhido não sofreu influência das dosagens crescentes do lodo de esgoto compostado no solo decapitado, sendo que os grupos sucessionais estudados (pioneiras e não-pioneiras) mostraram comportamentos semelhantes. O uso do composto mostrou-se uma alternativa sustentavelmente viável para o município de Mogi Guaçu, no que se refere à disposição de resíduos, reflorestamento e recuperação de áreas degradadas / Abstract: One of the consequences of urban population growth was the emergence of various environmental problems in the most of urban cities in Brazil, mainly the deterioration of water resources and land degradation caused by inadequate disposal of various types of waste generated by cities. In order to evaluate the use of sewage sludge composted with waste of grass of the city of Mogi Guaçu - SP, in the revegetation of a Red-Yellow Latosol decapitated, were used four doses of the compound produced (0, 20, 40 and 80Mg.ha-1), applied in a split way before planting trees of native species. For observation of the effects, in addition to chemical and pathological features of the composting, were evaluated over two years some chemical and physical attributes of soil, but also biometric parameters of tree species used for reforestation. The results showed that the process of composting done proved to be viable for disposal of waste studied in soil, since the existing law and attended did not affect adversely the area, regarding the increase in electrical conductivity and nitrate leaching in soil. The doses of the composting did not change significantly the physical parameters examined in the soil of the place and its organic carbon content, and only the strength of 80Mg.ha-1 promoted an increase in the level of phosphorus, calcium, magnesium, potassium, manganese, iron and soil pH, positively affecting their fertility. The chosen development of the composition of reflorestation was not influenced by the increasing of doses of composted sewage sludge on soil decapitated, and the successional studied groups (pioneer and nonpioneer) showed similar behavior. The use of the compound was shown to be a sustainably viable alternative for the city of Mogi Guaçu as regards the disposal of waste, reforestation and restoration of degraded areas / Doutorado / Doutor em Engenharia Agrícola
102

Analise da variabilidade genetica em populações de Gochnatia pulchra (Asteraceae) / Genetic variation in populations of Gochnatia pulchra (Asteraceae)

Bariani, Joice Machado 08 July 2007 (has links)
Orientador: Vera Nisaka Solferini / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-09T08:03:38Z (GMT). No. of bitstreams: 1 Bariani_JoiceMachado_M.pdf: 774577 bytes, checksum: db1caac482f4cbb8b0f659509e1fe63f (MD5) Previous issue date: 2007 / Resumo: Dentre os ecossistemas de savanas tropicais, o cerrado brasileiro é um dos biomas mais ameaçados no mundo, estando sujeito a processos de fragmentação, perda e degradação de habitat. Gochnatia pulhcra Cabrera (Asteraceae, Mutisieae) é uma espécie arbustiva perene, encontrada em áreas de cerrado com freqüente perturbação antrópica. No presente trabalho, foram estudadas oito populações dessa espécie empregando-se marcadores moleculares de isoenzimas, com o objetivo de analisá-las quanto à variabilidade genética. Foram observados baixos níveis de variabilidade genética nas populações, elevada endogamia e estruturação genética moderada entre as populações, indicando baixos níveis de fluxo gênico. Para seis dessas populações, foi realizado o estudo sobre o efeito da degradação do habitat sobre a variabilidade genética. Como resultado, observou-se que a degradação e a densidade de indivíduos apresentaram efeito negativo sobre a variabilidade genética das populações. Tais resultados apontam para a importância da degradação do habitat da espécie, dificultando o sucesso de interações ecológicas que são importantes para a manutenção da diversidade genética das populações / Abstract: The brazilian cerrado is one of the most threatened biomes of tropical savannas in the world, subject to habitat fragmentation, loss and degradation. Gochantia pulchra Kunth (Asteraceae, Mutisieae) is a perennial shrub species endemic and to the brazilian cerrado. Its commonly found in human disturbed cerrado sites. In the presente work, we studied eight populations of this species with allozyme markers, with the aim to analyze its genetic variation. We observed low levels of genetic variation, elevated inbreeding and moderate genetic structure between populations, indicating low levels of gene flow. For six out of eight populations, we studied the effect of habitat degradation on the genetic variation of populations. As a result, we observed that degradation and density showed a negative effect on the genetic variation on populations. These results highlight the impact of habitat degradation on this species, reducing the success of ecological interactions that are essential to the maintance of the genetic variation in these populations / Mestrado / Genetica Animal e Evolução / Mestre em Genética e Biologia Molecular
103

Estudo da potencialidade de aplicação da fotocatálise heterogênea na degradação de 17 α-etinilestradiol em água / Study of the potential application of heterogeneous photocatalysis in the degradation of 17 α-ethinylestradiol in water

Azevedo, Maria Graziela Cristo de Oliveira 25 February 2011 (has links)
Made available in DSpace on 2015-09-25T12:18:48Z (GMT). No. of bitstreams: 1 Maria Graziela Cristo de Oliveira Azevedo.pdf: 1925119 bytes, checksum: e3f62e7faec3449d62f10fdd04553c8d (MD5) Previous issue date: 2011-02-25 / This study investigated and evaluated the efficiency of heterogeneous photo-catalysis in degrading the synthetic hormone 17α-ethinylestradiol in water. The results were obtained in three phases, using in the first two phases, tank type reactors operating in batch mode (4 hours) with an agitation system and placed in a light chamber fitted with 15-watt germicidal lamps. The catalyst used was titanium dioxide (TiO2). A 23 factorial design was used in which the factors were: percentage of catalyst (0.02% and 0.05%), initial concentration of 17αethinylestradiol (15 mg/L-1 and 30 mg / L -1) and pH (5.0 and 9.0). A prescribed methodology was used to construct a calibration curve and to determine the degradation profile of 17α-ethinylestradiol. Statistical analysis of the results was performed using the software package Minitab 15. Heterogeneous photo-catalysis with TiO proved to be an efficient process for the removal of 17α-ethinylestradiol in water with a mean removal value of 81%. Of the three factors studied in the first stage, two were statistically significant in influencing the removal efficiency of the hormone, namely the percentage of catalyst used and the initial concentration of hormone in the sample. In the second phase, the data obtained confirmed the initial results and also revealed the reaction kinetics. In the third stage, the treatment combinations were compared when using UV light and solar radiation. Removal rates for the hormone were not significantly different between the two light sources and it could be concluded that photo-catalytic degradation is a very efficient method for the removal of 17α-ethinylestradiol in water. However the system still requires optimization so as to give the best results so as to ensure the system is viable and capable of large-scale application. / O presente trabalho estudou e avaliou a eficiência do processo de fotocatálise heterogênea na degradação do hormônio sintètico 17α-etinilestradiol em água. Os resultados foram obtidos em três etapas, utilizando-se, nas duas primeiras, reatores tipo tanque operando em batelada (4 horas) em um sistema experimental constituído por uma câmara de madeira com lâmpadas germicidas de 15 watts acopladas, além de um sistema de agitação. O catalisador utilizado foi o dióxido de titânio (TiO2). Foi utilizado planejamento fatorial do tipo 23, com dois níveis, cujos fatores estudados foram: porcentagem de catalisador (0,02% e,05%), concentração inicial de 17α-etinilestradiol (15 mg/L-1 e 30 mg/L-1) e pH (5,0 e 9,0); seguindo-se metodologia específica para construção da curva de calibração e do perfil de degradação do 17α-etinilestradiol. Todo o trabalho estatístico foi efetuado com auxílio do software Minitab 15. A fotocatálise heterogênea com TiO tem se revelado um processo eficiente na remoção do 17α-etinilestradiol, apresentando uma média de remoção de 81%. Dos três fatores estudados, na primeira etapa, dois exerceram influência estatisticamente significativa na remoção: percentagem do catalisador e concentração inicial da amostra. Na segunda etapa, os dados obtidos corroboram os resultados iniciais e revelam a cinética da reação. Na terceira etapa, comparou-se os tratamentos com uso de radiação UV e com uso de energia solar; verificando-se, além da degradação do micropoluente, o pH, a cor verdadeira e a alcalinidade total. Estes parâmetros não sofreram mudanças significativas, obtendo-se resultados de remoção bastante parecidos quando se utilizou diferentes radiações (artificial e solar). Pode-se concluir que a degradação fotocatalítica è um mètodo bastante eficiente na remoção de 17αetinilestradiol em água, necessitando uma otimização dos sistemas de degradação para melhores resultados e para que estes sejam viáveis e passíveis de aplicação em larga escala.
104

Ãndice de Pobreza HÃdrica (IPH) aplicado a municÃpios dos sertÃes dos Inhamuns nos do Cearà - Brasil / Water Poverty Index (WPI) applied to municipalities Inhamuns in the backlands of Cearà - Brazil

Rosa Maria Ramos MaranhÃo 08 December 2010 (has links)
CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / As comunidades e o ambiente sÃo elementos de um sistema complexo e necessitam de uma eficiente gestÃo dos recursos naturais e principalmente das Ãguas, para que a vida silvestre e os solos sejam preservados e o desenvolvimento local seja atingido de forma sustentÃvel e duradouro. A gestÃo estratÃgica da Ãgua e dos recursos naturais impÃe a busca de instrumentos que venham colaborar com a sustentabilidade dos ecossistemas. As zonas semiÃridas estÃo mais suscetÃveis aos processos de desertificaÃÃo e assim sendo merecerem atenÃÃo especial. Os indicadores tÃm se mostrado bastante eficientes para representar a realidade, com capacidade de produzir cenÃrios atuais e futuros. Deste modo as pesquisas lanÃam mÃo de novas tecnologias e vasta revisÃo teÃrica para tratar as informaÃÃes de forma integradas e considerando ao mesmo tempo as particularidades de cada local, de modo a serem capazes de apoiar os gestores no manejo adequado dos recursos naturais. O binÃmio Ãgua-pobreza tem imposto a necessidade de construÃÃo de instrumental analÃtico multivariado para a visÃo integrada da diversidade de elementos envolvidos neste processo. O Ãndice de Pobreza HÃdrica (IPH) à um indicador holÃstico, que viabiliza a gestÃo ambiental a partir do conhecimento do grau de escassez hÃdrica e seus reflexos na sociedade, desenvolvido pelo grupo do Oxford Centre for Water Research (OCWR), no Reino Unido (2000) e aplicado em mais de 140 paÃses. Nosso objetivo à calcular este indicador e verificar sua aplicabilidade nas aÃÃes relacionadas à pobreza e a degradaÃÃo ambiental no semiÃrido cerarense / Communities and the environment are elements of a complex system and need an efficient management of natural resources and especially water, to wildlife and soils are preserved and local development is achieved in a sustainable and lasting. The strategic management of water and natural resources requires the search for instruments that will contribute to the sustainability of ecosystems. The semi-arid areas are more susceptible to desertification processes and therefore deserve special attention. The indicators have been quite effective to represent reality, capable of producing current and future scenarios. Thus the researchers made use of new technologies and extensive literature review to treat the information in an integrated, while taking into account the particularities of each site in order to be able to support managers in appropriate management of natural resources. The binomial water-poverty has imposed the need for construction of multivariate analytical tools for integrated view of the diversity of elements involved in this process. The Water Poverty Index (HPI) is a holistic indicator, which enables the environmental management from the knowledge of the degree of water scarcity and its effects on society, developed by the group of the Oxford Centre for Water Research (OCWR), UK ( 2000) and applied to more than 140 countries. Our goal is to calculate this indicator and verify its applicability in actions related to poverty and environmental degradation in semi-arid region of CearÃ
105

A comparative study of the Rooikraal and Marie-Louise landfill sites indicating differences in management strategies, and the consequences thereof on operational and management issues.

Geldenhuys, Lukas Marthinus Marais 18 June 2013 (has links)
M.A.(Geography) / The prevention of environmental deterioration and the concept of sustainable development has become a major concern worldwide. However, increasingly affluent lifestyles along with continual commercial and industrial growth have led to the rapid increase in waste production (Renoua et al., 2008). The most common method of dealing with this production of waste is the disposal thereof by landfill, although this technique is widely viewed as unsustainable. Landfilling is critical to integrated waste management in South Africa due to its simplicity and cost effectiveness (Allen, 2001). Thus, there is a great need for environmentally acceptable landfill management practices. This research is primarily concerned with landfill management strategies and their effect on operational and management issues. A comparative analysis of the Marie Louise and Rooikraal landfill sites was carried out to distinguish differences in landfill management strategies and their outcome on operational and management issues. A concept, indicator, variable approach was used as comparative framework, while external audit reports, landfill management plans, and interviews were used as data sources identifying indicators and variables for analysis. Findings revealed that the Rooikraal landfill has been performing at a high standard, while the Marie Louise landfill has been underperforming due to a number of management failures. Factors that could have contributed to this failure include: external factors and its strain on effective management, capacity of local governments to deliver services with regard to waste management, issues surrounding co-operative governance, legal enforcement and compliance, and lack of control and awareness over landfill operations. These issues are direct consequences of landfill management and operation through municipal entities, making landfill management through municipal entities a key area of concern for effective landfill operations.
106

Factors affecting the success of reseeding rehabilitation in the semi-arid Karoo, South Africa

Matthee, Willem January 2015 (has links)
Due to overgrazing, mining and other anthropogenic disturbances, large sections of the Karoo region have been degraded, resulting in areas with low vegetation cover, where erosion rates are high and vegetation is dominated by unpalatable species. These areas have low and unpredictable rainfall, with slow to non-existent autogenic recovery, and this often forces landowners to implement reseeding rehabilitation in an attempt to increase both overall vegetation cover and the relative abundance of palatable plants. Landowners use soil preparation treatments, which include creating micro-catchments, ripping, mulching and brush packing, to supplement land rehabilitation. This study investigated the significance of initial rainfall, mean monthly rainfall, soil preparation techniques, slope, existing vegetation cover, litter, mulch and stone cover in determining the success of reseeding rehabilitation. Rainfall had the most significant influence, where long-lived shrubs established best under low initial rainfall and high mean monthly rainfall, and grasses established best after receiving high initial rainfall. Micro-catchments proved the most successful soil preparation technique for the establishment of long-lived shrubs, while ripping and mulching impacted negatively on grass establishment. A combination of mulch and micro-catchments aided Osteospermum sinuatum establishment in soils where soil shrinkage cracks occurred. Temperature influenced seed germination and drought tolerance of Lessertia annularis, Fingerhuthia africana and O. sinuatum, with higher germination success of O. sinuatum under temperatures simulating summer, and of F. africana under temperatures simulating winter. L. annularis germination had a faster growth rate and higher survival when germinated under autumn/spring temperatures. Landowners are advised to sow seeds of more than one species during rehabilitation, to include micro-catchments as soil preparation treatment, and to sow seeds during a time when rainfall is predicted to be high.
107

An integrated study of coal geology and potential environmental impact assessment at Mchenga Coal Mine in Livingstonia Coalfield in Malawi

Maneya, George Jameson January 2012 (has links)
This study was carried out on the main coal-producing and the extensively block-faulted area of Mchenga Coal Mine, southeast of the 90 km2 intracratonic Livingstonia Coalfield in the north of Malawi. It was initiated against the background of indistinct information on coal geology, shortage of energy and potential environmental threats due to mine activities. The study aimed at integrating investigations of characterization of the lithostratigraphy, coal seam correlation, coal quality determination, examination of the mineralogy and geochemistry of coal and hosts rocks, assessment of water quality and providing information for mining and potential environmental and water quality impact assessment in the study area. The methodologies used in this study include literature review, field visits, mapping, sites selection and characterization, borehole logging, geochemical analyses, data processing and interpretation. The geochemical analyses include proximity analysis of coal quality, microscopy and X-ray Diffraction for mineralogy and petrology, X-ray Fluorescence (XRF) for rock geochemistry and Atomic Absorption Spectrometry for determination water geochemistry. The results have shown that a) The Coal Measures comprises of four to six coal seams in different localities, and the occurrence is flat and gently dipping southeast and are correlated. Thicknesses of the coal seams vary from 0.10m to 3.0m with some notable lateral and horizontal variations. Thick and workable seams occupy the lower portion of the Coal Measures and are exposed along the North Rumphi River bank; b) Coal quality belongs to sub-bituminous ‘A’ to ‘C’ on ASTM classification (1991), being characterised by low moisture content (0.8 to 1.3 wt percent) and sulphur content (0.49 to 0.85 wt percent), high ash content (9.0 to 17 wt percent) and volatile matter (24 to 32.9 wt percent), fixed carbon (53.6 to 62.6 wt percent), calorific value (7,015 to 7,670 kcal/kg); c) Mineral matters constitute approximately 9.55 to 38.34 wt percent of the coal samples, predominantly clays (interstratified illite/smectite and kaolinite) with varying proportions of quartz, mica and feldspars, as well as minor calcite and pyrite and their geochemistry, being characterised by enrichment of SiO2 from 5.37 to 20.56 wt percent, Al2O3 (2.63 to 11.21 wt percent) and K2O (0.32 to 3.65 wt percent) with trace concentrations of CaO (0.04 to 0.41 wt. percent), MgO (0.08 to 0.65 wt percent) and P2O5 (0.018 to 0.037 wt percent) and Na2O concentration notably below 0.01 wt percent; d) Calcite and pyrite constitute minor concentration in both sandstones and shales; e) Water quality in the area is characterised as two groups of acidic (pH 3.3-6.4) and near-neutral to slightly alkaline (pH 6.9-7.3) and low pH, high TDS, SO42- and EC are noted at the coal crusher plant which points out to high leaching of trace elements such as Pb and Fe. Na++K+ are dominant in upper sections of North Rumphi and Mhlepa Rivers. Ca2+ cations are dominant at crusher plant, underground mine and lower section of Mhlepa; f) Based on the geochemistry analysis, Na and trace elements such as Ti, V, Mn, Fe, Zn, Rb, Sr and Zr from coal and host rocks have the ability to contribute significantly to deterioration in the ground and surface water quality in the study area. It can be concluded that the coals of the Livingstonia Coalfield belong to Gondwana group deposited in sub-basin with multiple seams embedded in sandstone and shale host rocks.
108

Expectativa de risco de degradação dos recursos hidricos na bacia do Rio Jundiai Mirim / Water resources degradation risk expectancy upon Jundiai Mirim watershed.

Batalha, Rodrigo Miguel Pereira 23 February 2006 (has links)
Orientador: Jose Teixeira Filho / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola / Made available in DSpace on 2018-08-07T17:29:32Z (GMT). No. of bitstreams: 1 Batalha_RodrigoMiguelPereira_M.pdf: 2913500 bytes, checksum: 3c1b987286048897e0ef24b98a07d6b0 (MD5) Previous issue date: 2006 / Resumo: O gerenciamento de recursos hídricos compreende um conjunto de fatores como: análises qualitativas e quantitativas, tomada de decisão, ações preventivas e/ou corretivas. Dentro do contexto da proteção dos recursos hídricos as medidas disciplinadoras do uso do solo na bacia apresentam alta eficiência e eficácia. A qualidade final nos corpos d¿água reflete necessariamente as atividades que são desenvolvidas em toda a bacia, cada um dos usos do seu espaço físico produz um efeito específico e característico.Assim, o presente trabalho teve como objetivo principal realizar uma análise qualitativa dos recursos hídricos da bacia do rio Jundiaí Mirim, esta unidade hidrográfica em estudo está inserida na UGRH5 (rios Piracicaba, Capivari e Jundiaí) e possui uma área de 11750ha, sendo o principal manancial de abastecimento do município de Jundiaí. O método desenvolvido baseou-se em planos de informação do meio físico, do sistema de produção e do procedimento agrícola. O resultado final apresentou a delimitação da expectativa de risco de degradação da bacia do rio Jundiaí Mirim, com enfoque para as áreas de acumulação de água (zona ripária), fundamentais para a manutenção qualitativa e quantitativa dos corpos d¿água ao longo da bacia. A estratificação das expectativas de risco de degradação em classes e a divisão da unidade hidrográfica em estudo em áreas menores (sub bacias) são importantes ferramentas para o planejamento e gerenciamento dos recursos hídricos. Verificou-se que a bacia do rio Jundiaí Mirim apresenta 10,9% da área com baixa expectativa de risco, 47,5% com média expectativa de risco e 41,6% da área com alta expectativa de risco. A combinação dos planos de informação das áreas de acumulação de água, ou área variável de afluência, e da expectativa de risco de degradação dos recursos hídricos mostrou que 10 sub bacias apresentam na área variável de afluência com alta expectativa de risco, ocupações superiores a 70% representadas por áreas industriais e/ou urbanas, 3 sub bacias apresentam ocupações entre 50% e 70% representadas por atividades industriais e/ou urbanas e 5 sub bacias apresentam ocupações inferiores a 50% representadas por atividades industriais e/ou urbanas. Estes dados servem de base para o início da elaboração de um plano gestor dos recursos hídricos deste manancial de abastecimento do município de Jundiaí / Abstract: The water resources management enrolls a bunch of factors such as: qualitative and quantitative analyses, taking decision, avoidable and/or preventable actions. In the field of water resources protection the disciplinary measures of soil use on watershed presents high efficiency. The streams final water quality necessarily reflects the activities that are developed and whole watershed, each one way we use the soil produces a specific and characteristic effect. This way, the present work had as main objective provide qualitative analysis of the Jundiaí Mirim¿s river water resources, this watershed study is inside UGRH5 (Piracicaba, Capivari e Jundiaí rivers) and an area of 11750ha, being it¿s main water source from Jundiaí county. The developed method was based on information on physical environment, production system and agricultural procedure plans. The final result presented the delimitation of the expectancy risk of Jundiaí Mirim watershed degradation, with focus on water accumulation areas (riparian zone), fundamental to the qualitative and quantitative maintenance of the streams along the watershed. The risk expectancy stratification and the division of the watershed in minor areas (sub watershed) are important tools on water resources planning and management. We could verify that Jundiaí-Mirim watershed presents 10.9% of its area with low risk expectancy, 47.5% with medium risk expectancy and 41.6% with high-risk expectancy. The combination of the information plans of water accumulation areas and the risk expectancy degradation of water resources shown 10 sub watershed with affluence variable area with high expectancy risk, superior occupations over 70% represented by industrial areas and/or urban, 3 sub watershed presented occupations from 50% to 70 % represented by industrial and urban activities and 5 sub watershed presented occupations below 50% represented by industrial and urban activities. These data may be useful to start preparing a water resources management plans to Jundiaí-Mirim watershed. / Mestrado / Agua e Solo / Mestre em Engenharia Agrícola
109

Degradação ambiental em fragmento de Mata Atlântica: floresta urbana Mata do Janga em Paulista/PE

Oliveira, Paulo Cabral de 25 August 2015 (has links)
Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2016-04-19T14:26:01Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Paulo Cabral de Oliveira.pdf: 5999501 bytes, checksum: 6b5b8f921ebc777d46a3ea57d8765e54 (MD5) / Made available in DSpace on 2016-04-19T14:26:01Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Paulo Cabral de Oliveira.pdf: 5999501 bytes, checksum: 6b5b8f921ebc777d46a3ea57d8765e54 (MD5) Previous issue date: 2015-08-25 / CNPq / A Mata do Janga é um fragmento de Mata Atlântica que se localiza na cidade do Paulista, município inserido na RMR (Região Metropolitana do Recife) capital do Estado de Pernambuco. Encontra-se protegida por lei como uma Unidade de Conservação (UC) estadual e parte dela constitui-se uma Reserva Ecológica e recategorizada como Floresta Urbana (FURB). Com uma área de 132,24 hectares, a mata vem sofrendo fortes pressões antrópicas. Em virtude de sua importância biológica objetivou-se compreender a perda de vegetação natural e o crescimento urbano e analisar as variações espaciais e temporais do uso e ocupação do solo por meio da aplicação do Índice de Vegetação por Diferença Normalizada (NDVI), tendo sido utilizadas imagens aéreas de 1985, 1995 e 2011, fotografias aéreas, ortofotocartas e imagens de satélite. Todas as análises constataram perda de vegetação mediante o crescimento urbano do município do Paulista, mais especificamente no Bairro do Janga, onde a Mata é inserida. Foram também realizadas entrevistas com moradores, com a finalidade de se obter informações da percepção ambiental da população em relação à Mata. As entrevistas sugeriram que a população não possui conhecimento acerca das legislações que regem essa UC, embora a maioria tenha relatado praticar ações de conservação da Mata, mas observa diferentes formas de impactos na área. O estudo permitiu concluir que mesmo protegida por lei, a Mata vem sofrendo impactos diretos e indiretos decorrentes das atividades antrópicas. É importante salientar que os resultados aqui obtidos poderão servir de subsídios para futuras ações de manejo, gestão e monitoramento por parte dos órgãos competentes e da sociedade. / The Forest of Janga is an Atlantic Forest fragment that is located in the city of Paulista, in the city within RMR (Metropolitan Region of Recife) capital of Pernambuco. Is protected by law as a Conservation Unit (UC) state and part of it constitutes an Ecological Reserve and recategorizada as Urban Forest (FURB). With an area of 132.24 hectares, the forest has come under strong anthropogenic pressures. Due to its biological importance aimed to understand the loss of natural vegetation and urban growth and analyze the spatial and temporal variations of soil use and occupation by applying the Vegetation Index (NDVI), have been used aerial imagery 1985, 1995 and 2011, aerial photographs, and satellite images ortofotocartas. All analyzes found loss of vegetation by the urban growth of the Paulista municipality, specifically in Janga Barrio, where the forest is located. They were also conducted interviews with residents in order to obtain information in the environmental awareness of the population regarding the forest. The interviews suggested that the population does not have knowledge of the laws governing this UC, although most reported practice of forest conservation actions, but notes different forms of impacts in the area. The study found that even protected by law, Mata has suffered direct and indirect impacts of human activities. Importantly, our findings could form the basis for future management actions, management and monitoring by the relevant authorities and society.
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A Memória rema contra a maré : lembranças sobre a degradação ambiental da Praia do Aracaju

Lima, Luis Eduardo Pina 20 December 2013 (has links)
The present research has for object the construction of memories of people living near the edge of the Industrial neighborhood, in the city of Aracaju, related to the way in which they perceive and ascribe meaning to the environmental degradation of the existing on-site small beach. Working with the basic assumption that memory re-making experience in relation to the environment inhabited (Bergson, 2006). For both, it was established that the general objective of this research is to analyze how those memories re-makes through the oral accounts collected based on phenomenology and through thematic oral history methodology. This is an exploratory research, interdisciplinary character, with an intentional sampling of 10 subjects over the age of 60 years, who live more than 30 years in that place. It was noticed that the subjects involved in this research they rebuilt their experiences regarding environmental degradation of Industrial neighborhood.s small beach, based on the strength of his memoirs. / A presente pesquisa tem por objeto a construção das memórias de pessoas que habitam nas proximidades da orla do bairro Industrial, na cidade de Aracaju, relacionadas à maneira pela qual elas percebem e atribuem significado à degradação ambiental da prainha existente no local. Trabalha-se com a hipótese básica de que a memória re-faz a experiência vivida em relação ao meio ambiente habitado (Bergson, 2006). Para tanto, estabeleceu-se que o objetivo geral desta pesquisa consiste em analisar como as referidas memórias se re-fazem através dos relatos orais coletados com base na fenomenologia e por meio da metodologia da história oral temática. Trata-se de uma investigação exploratória, de caráter interdisciplinar, que conta com uma amostragem intencional de 10 sujeitos maiores de 60 anos, que vivem a mais de 30 anos no referido local. Percebeu-se que os sujeitos envolvidos nesta pesquisa reconstruíram suas vivências com relação à degradação ambiental da prainha do bairro Industrial, tendo por base a resistência de suas memórias.

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