Data/hora: 09/06/2024 09:22:10

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 10/01/2018
Data da última atualização: | 10/01/2018
Autoria: | VICENTE, L. E.; STOLF, M. T.; LOEBMANN, D. G. dos S. W.; MANZATTO, C. V.; VICENTE, A. K.
Afiliação: | LUIZ EDUARDO VICENTE, CNPMA; MARCELA TABORDA STOLF, IGE-UNICAMP; DANIEL GOMES DOS SANTOS W LOEBMANN, CNPMA; CELSO VAINER MANZATTO, CNPMA; ANDREA KOGA VICENTE, CEPAGRI.
Título: | Mapping landscape features related to soil carbon using ASTER thermal infrared images.
Ano de publicação: | 2017
Fonte/Imprenta: | In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 18., 2017, Santos. Anais... Santos: Inpe, 2017. Trabalho 60115.
Páginas: | p. 7605-7612.
Idioma: | Inglês
Conteúdo: | Climatic change derived from greenhouse gases (GHG) anthropogenic emissions consists in one of the main concerns of public policy makers. In Brazil, agricultural activities and livestock are responsible for 23% of gross GHG emissions, and land use and soil management are the main factors that drive these emissions levels. Soil carbon is mainly stocked as soil organic matter (SOM), and SOM stocks are related to clay content in soil and soil management. In order to improve the monitoring of these factors, we propose the use of ASTER TIR images data to map quartz, phyllosilicated clays, and non-photosynthetically active vegetation (NPAV) in order to assess remote sensing techniques to large-scale mapping of environments with greater or less soil carbon accumulation. We used thermal bands ratios to get quartz, phyllosilicated clays, and NPAV image fractions, that were compared to ASTER VNIR images and to the soil classes map of the study area. Results show that areas with higher values in quartz image fraction are related to bare soils areas in quartz-enriched soils. Higher values in phyllosilicates image fraction are related to bare soils areas with clay soils and higher values in NPAV image fraction are consistent to the vegetation activity throughout the study area, including crop residues areas detected in large-scale farms.
Palavras-Chave: | Filossilicatos; Imagem de satélite; Índices espectrais; Non photosynthetically active vegetation; Phyllosilicates; Quartzo; Quatz; Spectral indices; Vegetação não fotossinteticamente ativa.
Thesagro: | Carbono; Sensoriamento remoto; Solo.
Thesaurus Nal: | Agriculture; Carbon; Remote sensing; Soil.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/170792/1/2017AA36.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (15959-1) - UPC - AA - DD -  -  -  - DIS