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Registros recuperados: 4
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Prediction of soil physical and chemical properties by visible and near-infrared diffuse reflectance spectroscopy in the Central Amazon. Repositório Alice
PINHEIRO, E. F. M.; CEDDIA, M. B.; CLINGENSMITH, C. M.; GRUNWALD, S.; VASQUES, G. de M..
Visible and near-infrared diffuse reflectance spectroscopy (VIS-NIR) has shown levels of accuracy comparable to conventional laboratory methods for estimating soil properties. Soil chemical and physical properties have been predicted by reflectance spectroscopy successfully on subtropical and temperate soils, whereas soils from tropical agro-forest regions have received less attention, especially those from tropical rainforests. A spectral characterization provides a proficient pathway for soil characterization. The first step in this process is to develop a comprehensive VIS-NIR soil library of multiple key soil properties to be used in future soil surveys. This paper presents the first VIS-NIR soil library for a remote region in the Central Amazon. We...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Quimiometria; Pré-processamento espectral; Carbono orgânico do solo; Solos tropicais.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088619
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Prototype development of a new soil index using econometrics method: data envelopment analysis. Repositório Alice
MIZUTA, K.; GRUNWALD, S.; CROPPER, W. P.; LEE, W.; VASQUES, G. M.; PHILLIPS, M. A..
2016
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Métodos econométricos; Análise envoltória de dados; Índice de solo.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1063242
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Spatially-explicit and spectral soil carbon modeling in Florida. Repositório Alice
GRUNWALD, S.; MYERS, D.; VASQUES, G. de M.; XIONG, X.; ROSS, C.; CHAIKAEW, P.; STOPPE, A.; KNOX, N.; COMERFORD, N.; HARRIS, W..
Profound shifts have occurred over the last three centuries in which human actions have become the main driver to global environmental change. In this new epoch, the Anthropocene, human-driven changes such as population growth, climate and land use change, are pushing the Earth system well outside its normal operating range causing severe and abrupt environmental change. In this context, we present research highlights from Florida (150,000 km2) showing how anthropogenic-induced changes have had major impacts on carbon dynamics in soils, including (i) modeling of carbon and nutrient dynamics and soil carbon sequestration impacted by climate and land use change; (ii) geospatial assessment of soil carbon stocks and pools, and (iii) spectral-based soil carbon...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Spectral; Soil carbon.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/920003
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The Terrestrial Carbon (Terra C) Information System to facilitate carbon synthesis across heterogeneous landscapes. Repositório Alice
HOOVER, B.; GRUNWALD, S.; MARTIN, T. A.; VASQUES, G. M.; KNOX, N. M.; KIM, J.; XIONG, X.; CHAIKAEW, P.; ADEWOPO, J.; CAO, B.; ROSS, C. W..
There are urgent needs to better synthesize knowledge and data across large regions and time periods to address global climate change, conduct soil/terrestrial carbon accounting, model carbon dynamics, assess carbon sequestration, and develop strategies for mitigation and adaptation. To address these needs we developed the Terrestrial Carbon (TerraC) Information System dedicated to advance soil/terrestrial carbon science. TerraC offers user-friendly tools to upload, store, manage, query, analyze, and download lab and field data characterizing carbon in soils, plants/biomass, atmosphere, water, and whole ecosystems. The purpose of TerraC is three-fold to: (i) advance carbon science through sharing of carbon and ancillary environmental data; (ii) facilitate...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Terrestrial carbon.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/920007
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