Spelling suggestions: "subject:"landscapeand"" "subject:"landscape.and""
1 |
Understanding the water balance of basement complex areas in Sokoto Basin, North-West Nigeria for improved groundwater managementAbubakar Gada, Murtala January 2014 (has links)
Understanding water balances is essential for sustainable water resource management, especially in semi-arid basement complex areas where there are large demands for water supplies, but the complex hydrogeological conditions limit groundwater development. This research presents an approach for water balance estimation based on the conceptual and computational modelling of six major landscape unit’s which have been classified on the basis of their differing hydrological responses. Detailed conceptual models of the hydrological processes operating in each of the different landscapes in a catchment and the processes that control water movement between the different landscapes are developed based on data analysis, fieldwork and literature. Two computational models (the WaSim soil water balance model and a new water balance model for bare rock) are used to estimate the daily water balance of each of the landscape units taking cognisance of their interconnectivity which includes runoff becoming run-on. Water balance simulations were run for the individual landscapes using input data from the semi-arid Sokoto Basin in Northwest Nigeria, and outputs for representative wet and dry years are used to demonstrate the reliability of model responses. The individual landscapes outputs were subsequently integrated, taking account of their area weighted contributions, to give a catchment-scale water balance which compares favourably with the observed river discharge at Fokku. The catchment water balance results reveal that AET accounts for the largest loss in the catchment at 72 % of the average rainfall for 37 years. This is followed by the groundwater flow to rivers, then runoff to rivers, representing 16% and 11 % of the average rainfall. This research has provided valuable insights into hydrological behaviour of the basement complex system and the effect of landscape variability on the water balance of these areas. The research suggested a rational approach to groundwater resource management in the basement complex areas that takes cognizance of the hydrological behaviour of different landscape units, focussing on areas with deep weathered material within the catchment identified in this research. The research specifically stresses the need to apply methods of water conservation during excess rainfall for future use in the dry season.
|
2 |
A cartografia ambiental como suporte para o estudo das unidades de paisagem: o caso da reserva biológica de São Donato / The environmental mapping as a support for the study of landscape units: the case of the biological reserve of São Donato - RSRighi, Fernanda Pereira 04 October 2012 (has links)
Com crescimento da degradação ambiental, houve um grande investimento em unidades de conservação, que resultou no Sistema Nacional de Unidades de Conservação (SNUC). Embora o SNUC almeje regulamentar as unidades de conservação, muitas dessas tem dificuldade em proteger o meio ambiente, como é o caso da reserva biológica de São Donato, situada entre os municípios de Itaqui e Maçambará - RS, cujo objetivo é proteger o banhado São Donato, frente à expansão da agricultura e da pecuária. Assim, o objetivo da dissertação é contribuir para o estudo das unidades de paisagem da reserva biológica de São Donato, através da cartografia ambiental. Para isso, foram traçados objetivos específicos: (1) elaborar mapas temáticos - hipsométrico, clinográfico e uso do solo; (2) proceder uma análise multitemporal do uso do solo; (3) propor uma cartografia de unidades de paisagem da reserva biológica; (4) avaliar essas unidades de paisagem, quanto ao grau das intervenções antrópicas. Portanto, a partir do conceito de paisagem definido por Bertrand (1968) e da metodologia proposta por Martinelli; Pedrotti (2001) para a cartografia de unidades de paisagem foram identificadas dez unidades de paisagem na reserva biológica de São Donato, sendo que as unidades com maior interferência antrópica estão em expansão, enquanto que as unidades naturais encontram-se em dinâmica de retração, devido ao crescimento da atividade agropecuária no entorno da unidade de conservação, sobretudo do cultivo do arroz irrigado. / With growing environmental degradation, there was a large investment in protected areas, which resulted in the National System of Conservation Units (SNUC). Although this system aims to regulated conservation units, many of these have difficulty in protecting the environment, such as the biological reserve of São Donato, located between the towns of Itaqui and Maçambará - RS, in order to protect the São Donato wetland, given the expansion of agriculture and livestock. The objective of this research is to contribute to the study of landscape units of the biological reserve of São Donato, through the environmental cartography. For this, specific objectives were outlined: (1) elaborate thematic maps; (2) make a multitemporal analysis of land use, (3) propose a cartography of landscape units of biological reserves; (4) evaluate these landscape units, the degree of human interventions. Therefore, from the concept of landscape defined by Bertrand (1968) and the methodology proposed by Martinelli; Pedrotti (2001) for cartography of landscape units were identified ten scenic drives in the biological reserve of São Donato, and units with greater human interference are increasing, while the natural units are in dynamic retraction, due to the growth of farming in the surrounding conservation area, especially the cultivation of rice.
|
3 |
An approach for modelling snowcover ablation and snowmelt runoff in cold region environmentsDornes, Pablo F. 29 June 2009
Reliable hydrological model simulations are the result of numerous complex interactions among hydrological inputs, landscape properties, and initial conditions. Determination of the effects of these factors is one of the main challenges in hydrological modelling. This situation becomes even more difficult in cold regions due to the ungauged nature of subarctic and arctic environments.<p>
This research work is an attempt to apply a new approach for modelling snowcover ablation and snowmelt runoff in complex subarctic environments with limited data while retaining integrity in the process representations. The modelling strategy is based on the incorporation of both detailed process understanding and inputs along with information gained from observations of basin-wide streamflow phenomenon; essentially a combination of deductive and inductive approaches. The study was conducted in the Wolf Creek Research Basin, Yukon Territory, using three models, a small-scale physically based hydrological model, a land surface scheme, and a land surface hydrological model. The spatial representation was based on previous research studies and observations, and was accomplished by incorporating landscape units, defined according to topography and vegetation, as the spatial model elements.<p>
Comparisons between distributed and aggregated modelling approaches showed that simulations incorporating distributed initial snowcover and corrected solar radiation were able to properly simulate snowcover ablation and snowmelt runoff whereas the aggregated modelling approaches were unable to represent the differential snowmelt rates and complex snowmelt runoff dynamics. Similarly, the inclusion of spatially distributed information in a land surface scheme clearly improved simulations of snowcover ablation. Application of the same modelling approach at a larger scale using the same landscape based parameterisation showed satisfactory results in simulating snowcover ablation and snowmelt runoff with minimal calibration. Verification of this approach in an arctic basin illustrated that landscape based parameters are a feasible regionalisation framework for distributed and physically based models. In summary, the proposed modelling philosophy, based on the combination of an inductive and deductive reasoning, is a suitable strategy for reliable predictions of snowcover ablation and snowmelt runoff in cold regions and complex environments.
|
4 |
An approach for modelling snowcover ablation and snowmelt runoff in cold region environmentsDornes, Pablo F. 29 June 2009 (has links)
Reliable hydrological model simulations are the result of numerous complex interactions among hydrological inputs, landscape properties, and initial conditions. Determination of the effects of these factors is one of the main challenges in hydrological modelling. This situation becomes even more difficult in cold regions due to the ungauged nature of subarctic and arctic environments.<p>
This research work is an attempt to apply a new approach for modelling snowcover ablation and snowmelt runoff in complex subarctic environments with limited data while retaining integrity in the process representations. The modelling strategy is based on the incorporation of both detailed process understanding and inputs along with information gained from observations of basin-wide streamflow phenomenon; essentially a combination of deductive and inductive approaches. The study was conducted in the Wolf Creek Research Basin, Yukon Territory, using three models, a small-scale physically based hydrological model, a land surface scheme, and a land surface hydrological model. The spatial representation was based on previous research studies and observations, and was accomplished by incorporating landscape units, defined according to topography and vegetation, as the spatial model elements.<p>
Comparisons between distributed and aggregated modelling approaches showed that simulations incorporating distributed initial snowcover and corrected solar radiation were able to properly simulate snowcover ablation and snowmelt runoff whereas the aggregated modelling approaches were unable to represent the differential snowmelt rates and complex snowmelt runoff dynamics. Similarly, the inclusion of spatially distributed information in a land surface scheme clearly improved simulations of snowcover ablation. Application of the same modelling approach at a larger scale using the same landscape based parameterisation showed satisfactory results in simulating snowcover ablation and snowmelt runoff with minimal calibration. Verification of this approach in an arctic basin illustrated that landscape based parameters are a feasible regionalisation framework for distributed and physically based models. In summary, the proposed modelling philosophy, based on the combination of an inductive and deductive reasoning, is a suitable strategy for reliable predictions of snowcover ablation and snowmelt runoff in cold regions and complex environments.
|
5 |
A cartografia ambiental como suporte para o estudo das unidades de paisagem: o caso da reserva biológica de São Donato / The environmental mapping as a support for the study of landscape units: the case of the biological reserve of São Donato - RSFernanda Pereira Righi 04 October 2012 (has links)
Com crescimento da degradação ambiental, houve um grande investimento em unidades de conservação, que resultou no Sistema Nacional de Unidades de Conservação (SNUC). Embora o SNUC almeje regulamentar as unidades de conservação, muitas dessas tem dificuldade em proteger o meio ambiente, como é o caso da reserva biológica de São Donato, situada entre os municípios de Itaqui e Maçambará - RS, cujo objetivo é proteger o banhado São Donato, frente à expansão da agricultura e da pecuária. Assim, o objetivo da dissertação é contribuir para o estudo das unidades de paisagem da reserva biológica de São Donato, através da cartografia ambiental. Para isso, foram traçados objetivos específicos: (1) elaborar mapas temáticos - hipsométrico, clinográfico e uso do solo; (2) proceder uma análise multitemporal do uso do solo; (3) propor uma cartografia de unidades de paisagem da reserva biológica; (4) avaliar essas unidades de paisagem, quanto ao grau das intervenções antrópicas. Portanto, a partir do conceito de paisagem definido por Bertrand (1968) e da metodologia proposta por Martinelli; Pedrotti (2001) para a cartografia de unidades de paisagem foram identificadas dez unidades de paisagem na reserva biológica de São Donato, sendo que as unidades com maior interferência antrópica estão em expansão, enquanto que as unidades naturais encontram-se em dinâmica de retração, devido ao crescimento da atividade agropecuária no entorno da unidade de conservação, sobretudo do cultivo do arroz irrigado. / With growing environmental degradation, there was a large investment in protected areas, which resulted in the National System of Conservation Units (SNUC). Although this system aims to regulated conservation units, many of these have difficulty in protecting the environment, such as the biological reserve of São Donato, located between the towns of Itaqui and Maçambará - RS, in order to protect the São Donato wetland, given the expansion of agriculture and livestock. The objective of this research is to contribute to the study of landscape units of the biological reserve of São Donato, through the environmental cartography. For this, specific objectives were outlined: (1) elaborate thematic maps; (2) make a multitemporal analysis of land use, (3) propose a cartography of landscape units of biological reserves; (4) evaluate these landscape units, the degree of human interventions. Therefore, from the concept of landscape defined by Bertrand (1968) and the methodology proposed by Martinelli; Pedrotti (2001) for cartography of landscape units were identified ten scenic drives in the biological reserve of São Donato, and units with greater human interference are increasing, while the natural units are in dynamic retraction, due to the growth of farming in the surrounding conservation area, especially the cultivation of rice.
|
6 |
Das leituras da paisagem e sua representação cartográfica: as unidades da paisagem do município de Ubatuba - SP. / Readings of the landscape and its cartographic representation: the landscape units of Ubatuba - SPMelo, Kelly Cristina de 21 September 2010 (has links)
No âmbito da Geografia, verifica-se que o estudo da paisagem é de fundamental importância para a compreensão dos fenômenos resultantes da relação entre a dinâmica social e a dinâmica da natureza, permitindo avaliar os resultados da relação entre o tempo/espaço social e o tempo/espaço natural. Este trabalho de pesquisa trata da identificação de Unidades de Paisagem no município de Ubatuba (SP), partindo da avaliação da paisagem através do estudo das condicionantes do meio físico, social e cultural, destacando-se também a importância da espacialização para construção da síntese, representada por meio da Cartografia Ambiental. O referencial teórico baseou-se na abordagem sistêmica, preconizada na Teoria Geral dos Sistemas. Os procedimentos operacionais e metodológicos desenvolveram-se em etapas, desde a pesquisa bibliográfica, trabalho de campo, sistematização de dados, caracterização e mapeamentos. O modo de análise buscou ser integrador, contendo elementos norteadores, estabelecimento de escalas espaciais de abordagem, definição e mensuração de áreas denotando formas sustentáveis de utilização, em aspectos históricos, espaciais e ecológicos. / In Geography, it is known that landscape study is of basic importance to understand the phenomena that result of the relationship between social and environmental dynamics, allowing the relation between time/social space and time/ natural space to be evaluated. This research is about identifying landscape units in the city of Ubatuba (SP), considering the landscape analysis through the comprehension of the determining aspects of physical, social and cultural environment, and highlighting the importance of spatializing to build up a synthesis represented by environmental cartography. The theory reference is based in the systemic approach preconized in the general systems theory. The operational and methodological procedures were developed in stages, from the bibliographical research, field work, data systematization, characterization to mapping. The form of analysis intended to be integrating, containing guiding elements, establishing spatial scales approach, definition and areas measure indicating sustainable ways of use in historical, spatial and ecological aspects.
|
7 |
Evolução da paisagem costeira da Zona de Expansão de Aracaju/SEOliveira, Luana Santos 18 May 2012 (has links)
The coastal landscape of the named area Zona de Expansão (Expansion Zone) located in the city of Aracaju, the capital of the state of Sergipe, in the Northeast of Brazil, can be
characterized by its genetic features and, by anthropic and natural dynamics. Thus, this study, based on the landscape analytical category, aimed to analyze the short, medium and long terms evolution of the physical and anthropic structurings. For this, the vectors and axes of occupation, the landscape units and shoreline evolution were analyzed. The method used was based on literature review, field work and, shoreline and landscape units mapping for a range of different time (1965, 1971, 1978, 1986, 2003 and 2008). It was established as occupation vectors: the state policies; the real estate action; the 2nd residences s and; the tourism.
Moreover, the occupation axes were determined by the urban infra-structures such as Náufragos´s road, José Sarney´s road and Joel Silveira´s bridge, as well as the installation of
urban equipment dedicated to human occupancy and tourism. The landscape units identified were: Marine Terrace, Dune/Interdune, Tidal Plain, Beach/Foredune and Anthropogenic Intervention. The combination of occupation and development variables has directly influenced the landscape which experimented an increasing of occupancy over the natural units, specially from the 1980´s on. Nevertheless, the natural landscape units still predominate
in the landscape. Concerning the evolutionary studies of the shoreline, the data obtained from this research show that most of the investigated shoreline has remained relatively stable over the last 40 years. Only short shoreline variations caused by erosion or progradation have been verified. The only exception of the stable status aforementioned was observed in the shoreline of the southernmost section, as well at Vaza-Barris river mouth, where a high variability of sedimentation determined by the ebb-tidal delta dynamics has been found. This study has also verified the formation of a sandy spit on the left margin of the Vaza-Barris river which has influenced the configuration of the shoreline and landscape of that area. Based on the occupancy level verified in the vicinity of the studied shoreline , there are few areas that pose risks to occupation. However, the coastal zone may suffer due to a potential risk related to the population increase. Finally, the result of this study has emphasized the importance of human occupation planning over the natural landscape units as well as the nearby shorelines, in order to avoid potentially irreversible urban and environmental damages. / A paisagem costeira da Zona de Expansão de Aracaju, Sergipe, NE do Brasil, distingue-se por suas características genéticas e sua dinâmica natural e antrópica. Assim, o presente estudo, o qual se baseou na categoria analítica paisagem, teve por objetivo analisar a evolução dos
estruturantes físicos e antrópicos a longo, médio e curto prazos, a partir da determinação: dos vetores e eixos estruturantes da ocupação; dos estudos evolutivos das unidades de paisagem e, do posicionamento da linha de costa e da ocupação antrópica. Os procedimentos metodológicos utilizados foram: levantamento bibliográfico, trabalho de campo e mapeamento das unidades de paisagem e da linha de costa para diferentes anos (1965, 1971, 1978, 1986, 2003 e 2008). Foram estabelecidos como vetores de ocupação da Zona de Expansão: a ação estatal, a ação imobiliária, as segundas residências e o turismo. Os eixos de ocupação foram definidos pelas rodovias dos Náufragos e José Sarney, ponte Joel Silveira, assim como, de aparatos destinados à ocupação e ao turismo. As unidades de paisagem individualizadas foram individualizadas em: Terraço Marinho, Duna/Interduna, Planície de Maré, Praia/Duna Frontal e Intervenção Antrópica. A ação dos vetores de ocupação
materializou-se na paisagem, em que foi verificado o aumento de áreas ocupadas e parcialmente ocupadas sobre as unidades de paisagem natural, principalmente após a década
de 80. Apesar do crescente aumento da Unidade de Intervenção Antrópica, as unidades de paisagem natural ainda preponderam na paisagem. No que se refere ao estudo evolutivo da linha de costa, os resultados obtidos evidenciam que a maior parte da linha de costa da área investigada apresentou-se estável nos últimos 40 anos, com pequenas variações decorrentes da erosão ou progradação. A exceção desta tendência foi verificada na linha de costa do setor
sul, nas adjacências da desembocadura do rio Vaza-Barris, em que se constatou alta variabilidade em função da dinâmica do delta de maré-vazante. Destaca-se, ainda, a formação
de um pontal arenoso na margem esquerda do rio Vaza-Barris, que influenciou na configuração da linha de costa e da paisagem desta área. Com base no nível de ocupação verificado nas proximidades da linha de costa estudada, evidenciou-se que poucas áreas apresentam riscos à ocupação. Esse fato não exclui a presença de risco em potencial em grande parte da frente litorânea em função do aumento populacional. Com base nos resultados obtidos nesta pesquisa, enfatiza-se a importância do planejamento da ocupação sobre as unidades de paisagem natural e nas proximidades da linha de costa, a fim de evitar e minimizar futuros problemas urbano-ambientais.
|
8 |
Das leituras da paisagem e sua representação cartográfica: as unidades da paisagem do município de Ubatuba - SP. / Readings of the landscape and its cartographic representation: the landscape units of Ubatuba - SPKelly Cristina de Melo 21 September 2010 (has links)
No âmbito da Geografia, verifica-se que o estudo da paisagem é de fundamental importância para a compreensão dos fenômenos resultantes da relação entre a dinâmica social e a dinâmica da natureza, permitindo avaliar os resultados da relação entre o tempo/espaço social e o tempo/espaço natural. Este trabalho de pesquisa trata da identificação de Unidades de Paisagem no município de Ubatuba (SP), partindo da avaliação da paisagem através do estudo das condicionantes do meio físico, social e cultural, destacando-se também a importância da espacialização para construção da síntese, representada por meio da Cartografia Ambiental. O referencial teórico baseou-se na abordagem sistêmica, preconizada na Teoria Geral dos Sistemas. Os procedimentos operacionais e metodológicos desenvolveram-se em etapas, desde a pesquisa bibliográfica, trabalho de campo, sistematização de dados, caracterização e mapeamentos. O modo de análise buscou ser integrador, contendo elementos norteadores, estabelecimento de escalas espaciais de abordagem, definição e mensuração de áreas denotando formas sustentáveis de utilização, em aspectos históricos, espaciais e ecológicos. / In Geography, it is known that landscape study is of basic importance to understand the phenomena that result of the relationship between social and environmental dynamics, allowing the relation between time/social space and time/ natural space to be evaluated. This research is about identifying landscape units in the city of Ubatuba (SP), considering the landscape analysis through the comprehension of the determining aspects of physical, social and cultural environment, and highlighting the importance of spatializing to build up a synthesis represented by environmental cartography. The theory reference is based in the systemic approach preconized in the general systems theory. The operational and methodological procedures were developed in stages, from the bibliographical research, field work, data systematization, characterization to mapping. The form of analysis intended to be integrating, containing guiding elements, establishing spatial scales approach, definition and areas measure indicating sustainable ways of use in historical, spatial and ecological aspects.
|
9 |
Paisagens de Torre de Pedra (SP): avaliação do potencial geoecológico das paisagens e subsídios ao planejamento territorial / Landscapes of Torre de Pedra (SP): evaluation of the geoecological potential of landscapes and subsidies to territorial planningFaria, Jéssica Vieira de 27 September 2018 (has links)
O relevo paulista apresenta algumas peculiaridades no tocante a formas geomorfológicas excepcionais. Um exemplo é o morro residual conhecido como Torre de Pedra, no interior do estado. Este morro residual, cuja localização é próxima ao relevo de cuestas, foi influenciado pelo processo de circundenudação nas bordas da Depressão Periférica Paulista, Bacia do Paraná. Dado a presença destes morros testemunhos no relevo paulista e a preocupação de algumas instâncias de órgãos públicos em preservar os monumentos geológicos do estado, a pesquisa analisou possibilidades de uso do solo na região e verificou a possibilidade de promover o turismo na área, sob a perspectiva dos estudos do planejamento da paisagem. Dessa forma, o objetivo geral da pesquisa foi avaliar o potencial geoecológico das unidades de paisagens do município de Torre de Pedra (SP), principalmente do morro testemunho e seu entorno. Para isso, houve uma avaliação do estado ambiental prévio da área de estudo. Em seguida, houve a delimitação das unidades de paisagem, que abrangeu os seguintes critérios: unidades geomorfológicas, formas de relevo e padrão de uso e cobertura do solo. Simultaneamente, foi realizado levantamento bibliográfico sobre modos de turismo em que a geodiversidade é destacada. Como resultado, delimitou-se quatro principais unidades de paisagem na área de estudo e verificou-se que há diversas potencialidades nas unidades de paisagens, inclusive potencial turístico. Essa pesquisa contribuiu para levantar indicações de uso e cobertura do solo que podem dar subsídios para o planejamento territorial da área de estudo. / São Paulo estate relief presents some peculiarities regarding exceptional geomorphological forms. An example is the residual hill known as Torre de Pedra, inside the state. This residual hill, whose location is close to slope relief, was influenced by the process of circumundation on the edges of the Depressão Periférica, Paraná Basin. Due to the presence of these testimonial hills in the state of São Paulo and the concern of some instances of public organizations in preserving the state\'s geological monuments, the research analyzed possibilities of land use in the region and verified the possibility of promoting tourism in the area, from the perspective of landscape planning studies. Thus, the general objective of the research is to evaluate the geoecological potential of the landscapes of the city of Torre de Pedra (SP), mainly of the residual hill and its surroundings. For this, there was an evaluation of the previous environmental state of the study area. The delimitation of the landscape units covered the following criteria: geomorphological units, relief forms and pattern of use and soil cover. Simultaneously, there will be a bibliographical survey on modes of tourism in which geodiversity is highlighted. As results, four landscape units were delimited and several potentialities of the landscapes of the study area were verified during the research, including tourist potential. This research contributed to raise indications of land use and land cover that support the territorial planning of the study area.
|
10 |
Uso de indicadores para a an?lise ambiental na unidade de conserva??o apa Serra Branca - BaAlves, Adriano Almeida 14 March 2018 (has links)
Submitted by Verena Pereira (verenagoncalves@uefs.br) on 2018-07-17T23:10:59Z
No. of bitstreams: 1
Adriano Almeida Alves.pdf: 5166503 bytes, checksum: b2f18c6fe26408f21cce673a336f447c (MD5) / Made available in DSpace on 2018-07-17T23:10:59Z (GMT). No. of bitstreams: 1
Adriano Almeida Alves.pdf: 5166503 bytes, checksum: b2f18c6fe26408f21cce673a336f447c (MD5)
Previous issue date: 2018-03-14 / The creation of Conservation Units has been showing the most widespread idea in our current conception of nature conservation, mainly with the various transformations that occurred in the second half of the twentieth century. The Environmental Protection Areas (APA) are an example of Conservation Units, as is the case of APA Serra Branca, a Sustainable Use Conservation Unit. There are several criteria used for the delimitation of a Conservation Unit, and the risk of environmental vulnerability is one of them, so this work aimed to analyze the environmental vulnerability of the APA Serra Branca through environmental indicators for the elaboration of an Environmental Zoning, using variables that point out and quantify vulnerable areas as a means of responding if environmental indicators are capable of measuring environmental vulnerability, making it possible to infer about environmental sustainability and the possible fragilities and potentialities of the area. The application of geoprocessing techniques subsidized the analysis and integration of data and information, as well as the generation of products, such as cartographic. It was these techniques that made it possible to obtain the results such as: Map of Critical Areas; Modeling of the Environmental Vulnerability of the APA Serra Branca and Environmental Zoning of the APA Serra Branca. In order to define the critical areas, the criteria proposed by Bessa Junior and Muller were taken into account, taking into account environmental indicators (Hypsometry, Declivity, Hydrography) that were crossed through the intersection with the land Use and Coverage map. The modeling developed was based on criteria adapted from Crepani to local reality. The map of environmental vulnerability derived from map algebra related to the themes: Land Declivity, Use and Coverage, Geomorphology, Geology and Soils, for each variable, a vulnerability value was inserted through a map reclassification technique. As a final result, the Environmental Zoning was generated, which was derived from the intersection of the Environmental Vulnerability map with the Land Use and Coverage map. At the end of these stages, it was possible to observe the areas with greater environmental vulnerability, and the areas that were more stable, which represented the greater part of the APA Serra Branca area / A cria??o de Unidades de Conserva??o vem se mostrando a ideia mais difundida na nossa atual concep??o de conserva??o da natureza, principalmente com as diversas transforma??es que ocorreram na segunda metade do s?culo XX. As ?reas de Prote??o Ambiental (APA) s?o um exemplo de Unidades de Conserva??o, como ? o caso da APA Serra Branca, uma Unidade de Conserva??o de Uso Sustent?vel. S?o diversos os crit?rios utilizados para a delimita??o de uma Unidade de Conserva??o, e o risco a vulnerabilidade ambiental ? um deles, ent?o esse trabalho objetivou analisar a vulnerabilidade ambiental da APA Serra Branca atrav?s de indicadores ambientais para a elabora??o de um Zoneamento Ambiental, utilizando vari?veis que apontem e quantifiquem ?reas vulner?veis, como meio de responder se os indicadores ambientais s?o capazes de mensurar a vulnerabilidade ambiental, possibilitando inferir sobre a sustentabilidade ambiental e as poss?veis fragilidades e potencialidades da ?rea. A aplica??o de t?cnicas de geoprocessamento subsidiou a an?lise e integra??o de dados e informa??es, bem como a gera??o de produtos, como os cartogr?ficos. Foram essas t?cnicas que tornaram poss?vel a obten??o dos resultados tais como: Mapa de ?reas Cr?ticas; Modelagem da Vulnerabilidade Ambiental da APA Serra Branca e Zoneamento Ambiental da APA Serra Branca. Para definir as ?reas cr?ticas, foram seguidos crit?rios propostos por Bessa Junior e Muller, levando em considera??o, indicadores ambientais (Hipsometria, Declividade, Hidrografia) que foram cruzados atrav?s da interse??o com o mapa de Uso e Cobertura das Terras. A modelagem desenvolvida foi baseada nos crit?rios adaptados de Crepani ? realidade local. O mapa de vulnerabilidade ambiental derivou da ?lgebra de mapas relacionada aos temas: Declividade, Uso e Cobertura das Terras, Geomorfologia, Geologia e Solos, para cada vari?vel, foi inserido um valor de vulnerabilidade por meio de t?cnica de reclassifica??o de mapas. Como resultado final, foi gerado o Zoneamento Ambiental, que foi derivado da interse??o do mapa de Vulnerabilidade Ambiental com o mapa de Uso e Cobertura das Terras. Ao fim dessas etapas, foi poss?vel observar as ?reas com maior vulnerabilidade ambiental, e as ?reas que se encontravam com uma maior estabilidade, que representavam a maior parte da ?rea da APA Serra Branca
|
Page generated in 0.0657 seconds