Land Use And Land Cover Change
Mostrando 37-44 de 44 artigos, teses e dissertações.
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37. Permanent plot selection in moutainous ecosystems / Seleção de parcelas permanentes em ecossistemas montanhosos
A methodology for the selection of an optimal set of drainage basin with regional representativeness of the environmental variability of the studied area is presented. The methodology is based on the cluster analysis of the second order drainage basins parameterized by environmental characteristics related to the spatial pattern of the land cover, to microcl
Publicado em: 2003
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38. Uso de imagens Radarsat-1 para fins de mapeamento de uso da terra e cobertura do solo em ambiente tropical úmido urbano: o caso de Manaus, Estado do Amazonas. / Use of radarsat-1 data in the identification of targets related to land use and land cover in urban humid tropical region: the case of Manaus, state of the Amazon, Brazil
The use of remote sensing data acquired through Synthetic Aperture Radar has been a recent common trend for land use and land cover mapping purposes. The information derived from this kind of data has been applied to distinct related application fields, such as: urban pattern analysis and mapping, settlements identification, urban change detection and even m
Publicado em: 2002
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39. Evolution of the land use in portion of the occidental Amazon (Acre), with use of changes detention technique / Evolução do uso da terra em porção da Amazônia ocidental (Acre), com uso de técnicas de detecção de mudanças
The Brazilian Amazon has been objective of activities that are transforming extensive areas of humid tropical forest in areas destined to the agriculture and pastures, contributing to the alteration of the atmosphere and of the Amazon landscape. Starting from the decade of 60, the state of Acre, started to suffer great pressure through the migration and peop
Publicado em: 2001
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40. Contribuição dos dados integrados dos sistemas sensores TM/Landsat-5 e ERS-1/SAR para o estudo de uso e cobertura da terra no nordeste da Ilha do Maranhão / Contribution of the integrated sensor systems TM/Landsat-5 and SAR/ERS-1 data to study northeast s land use/land cover from Maranhão Island
Neste trabalho, apresenta-se e discute-se os resultados obtidos a partir da integração de dados ópticos e de microondas, avaliando-se o grau de sinergismo entre os mesmo na detecção e mapeamento de mudanças de uso e cobertura vegetal atual do solo, na área a nordeste da Ilha do Maranhão. Foram utilizadas imagens TM do satélite Landsat-5 de junho de
Publicado em: 2000
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41. Sensoriamento remoto no termal e infravermelho proximo no estudo de depositos de turfa no Vale do Rio Paraiba do Sul (SP) / Thermal and near infrared remote sensing in the study of peat deposits on the Paraiba do Sul river flood plain (SP)
The purpose of this study was to evaluate the use of thermal and photographic remote sensing in the discrimination of peats with different organic matter and moisture contents, depth of occurrence, calorific value and thickness. To achieve this objective, the first step was to analyse the thermometric and radiometric temperatures obtained in the field and la
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/10/1984
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42. Thermal and near infrared remote sensing in the study of peat deposits on the Paraiba do Sul river flood plain (SP) / Sensoriamento remoto no termal e infravermelho proximo no estudo de depositos de turfa no Vale do Rio Paraiba do Sul (SP)
The purpose of this study was to evaluate the use of thermal and photographic remote sensing in the discrimination of peats with different organic matter and moisture contents, depth of occurrence, calorific value and thickness. To achieve this objective, the first step was to analyse the thermometric and radiometric temperatures obtained in the field and la
Publicado em: 1984
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43. Long-term changes in Serengeti-Mara wildebeest and land cover: Pastoralism, population, or policies?
Declines in habitat and wildlife in semiarid African savannas are widely reported and commonly attributed to agropastoral population growth, livestock impacts, and subsistence cultivation. However, extreme annual and shorter-term variability of rainfall, primary production, vegetation, and populations of grazers make directional trends and causal chains hard
The National Academy of Sciences.
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44. Carbon emissions from tropical deforestation and regrowth based on satellite observations for the 1980s and 1990s
Carbon fluxes from tropical deforestation and regrowth are highly uncertain components of the contemporary carbon budget, due in part to the lack of spatially explicit and consistent information on changes in forest area. We estimate fluxes for the 1980s and 1990s using subpixel estimates of percent tree cover derived from coarse (National Oceanic and Atmosp
National Academy of Sciences.