13 documents found, page 1 of 2

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Integração de imagens Landsat/ETM+ e CBERS-2/CCD para detecção de mudanças em á...

Santos, João Roberto dos; Maldonado, Francisco Dario; Graça, Paulo Maurício Lima Alencastro de

Date: 2020   |   Origin: Oasisbr

Relationships Between Remotaly Sensed Forest Structure and Biomass: Fourier Str...

N., Treuhaft, R.; Gonçalves, Fábio; D., Chapman, B.; Neumann, Maxim; Santos, João Roberto dos; Graça, Paulo Maurício Lima Alencastro de

Date: 2020   |   Origin: Oasisbr

Caracterização de uso e cobertura da terra na Amazônia utilizando imagens duais...

Azevedo, Adriana Rodrigues de; Santos, João Roberto dos; Gama, Fábio Furlan; Graça, Paulo Maurício Lima Alencastro de; Mura, José Claúdio

A utilização de imagens de radar é fonte alternativa de informações para subsidiar o monitoramento da região amazônica, visto que as imagens ópticas têm limitações de imageamento em zonas tropicais face a ocorrência de nuvens. Por conseguinte este trabalho teve como objetivo analisar a capacidade das imagens-radar de banda X multitemporais e polarizadas obtidas pelo satélite COSMO-SkyMed (COnstellation of small...

Date: 2020   |   Origin: Oasisbr

An estimate of the number of tropical tree species

Ferry, Slik, J. W.; Eduardo, Van Den Berg,; Ochoa-Gaona, Susana; Onrizal, Onrizal; Navendu, Page,; Parolin, Pia; Marc, Parren,

Date: 2020   |   Origin: Oasisbr

Estimating aboveground biomass in tropical forests: Field methods and error ana...

Gonçalves, Fábio Guimarães; Treuhaft, Robert N.; Law, Beverly; Almeida, André Quintão; Walker, Wayne S.; Baccini, Alessandro; Santos, João Roberto dos

Mapping and monitoring of forest carbon stocks across large areas in the tropics will necessarily rely on remote sensing approaches, which in turn depend on field estimates of biomass for calibration and validation purposes. Here, we used field plot data collected in a tropical moist forest in the central Amazon to gain a better understanding of the uncertainty associated with plot-level biomass estimates obtai...

Date: 2020   |   Origin: Oasisbr

3D forest structure analysis from optical and LIDAR data

Treuhaft, Robert; Chapman, Bruce; Dutra, Luciano; Santos, João Roberto dos; Gonçalves, Fábio; Mura, José Claúdio

Date: 2020   |   Origin: Oasisbr

Detecção do corte seletivo de madeira por técnica de rotação radiométrica na fl...

Graça, Paulo Maurício Lima Alencastro de; Maldonado, Francisco Dario; Santos, João Roberto dos; Soares, João Vianei

Date: 2020   |   Origin: Oasisbr

Efeito da topografia na resposta polarimétrica de floresta tropical em imagens ...

Bispo, Polyanna da Conceição; Santos, João Roberto dos; Valeriano, Marcio de Morrison; Graça, Paulo Maurício Lima Alencastro de

Date: 2020   |   Origin: Oasisbr

Phylogenetic classification of the world's tropical forests

Slik, J. W.Ferry; Franklin, Janet; Arroyo-Rodríguez, Víctor; Field, Richard; Aguilar, Salomón; Aguirre, Nikolay; Ahumada, Jorge A.; Aiba, Shinichiro

Knowledge about the biogeographic affinities of the world's tropical forests helps to better understand regional differences in forest structure, diversity, composition, and dynamics. Such understanding will enable anticipation of region-specific responses to global environmental change. Modern phylogenies, in combination with broad coverage of species inventory data, now allow for global biogeographic analyses...

Date: 2020   |   Origin: Oasisbr

Predictive models of primary tropical forest structure from geomorphometric var...

Bispo, Polyanna da Conceição; Santos, João Roberto dos; Morisson Valeriano, Márcio de; Graça, Paulo Maurício Lima Alencastro de; Balzter, Heiko

Surveying primary tropical forest over large regions is challenging. Indirect methods of relating terrain information or other external spatial datasets to forest biophysical parameters can provide forest structural maps at large scales but the inherent uncertainties need to be evaluated fully. The goal of the present study was to evaluate relief characteristics, measured through geomorphometric variables, as p...

Date: 2020   |   Origin: Oasisbr

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