Derivation of Soil Line Influence on Two-Band Vegetation Indices and Vegetation Isolines

Autor(es)

Yoshioka, Hiroki ^[1] ; Miura, Tomoaki ^[2] ; Dematte, Jose A. M. ^[3] ; Batchily, Karim ^[4] ; Huete, Alfredo R. ^[5]

Afiliação do(s) autor(es)

^[1] Aichi Prefectural Univ, Dept Informat Sci & Technol, Nagakute, Aichi 4801198 - Japan

^[2] Univ Hawaii Manoa, Dept Nat Resources & Environm Management, Coll Trop Agr & Human Resources, Honolulu, HI 96822 - USA

^[3] Univ Sao Paulo, Dept Soil Sci, Piracicaba, SP - Brazil

^[4] Nat Resources Conservat Serv, USDA, Athens, GA 30601 - USA

^[5] Univ Arizona, Dept Soil Water & Environm Sci, Tucson, AZ 85721 - USA

• Tipo de documento: Artigo Científico
• Fonte: REMOTE SENSING; v. 1, n. 4, p. 842-857, DEC 2009.
• Citações Web of Science: 10

Resumo

This paper introduces derivations of soil line influences on two-band vegetation indices (VIs) and vegetation isolines in the red and near infra-red reflectance space. Soil line variations are described as changes in the soil line parameters (slope and offset) and the red reflectance of the soil surface. A general form of a VI model equation written as a ratio of two linear functions (e.g., NDVI and SAVI) was assumed. It was found that relative VI variations can be approximated by a linear combination of the three soil parameters. The derived expressions imply the possibility of estimating and correcting for soil-induced bias errors in VIs and their derived biophysical parameters, caused by the assumption of a general soil line, through the use of external data sources such as regional soil maps. (AU)

• Processo FAPESP: 98/01059-7 - Relações entre dados espectrais e atributos físicos, químicos e mineralógicos de solos de Bauru
• Beneficiário: José Alexandre Melo Demattê
• Modalidade de apoio: Bolsas no Exterior - Pesquisa