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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Yoshioka, Hiroki [1] ; Miura, Tomoaki [2] ; Dematte, Jose A. M. [3] ; Batchily, Karim [4] ; Huete, Alfredo R. [5]
Total Authors: 5
Affiliation:
[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
Total Affiliations: 5
Document type: Journal article
Source: REMOTE SENSING; v. 1, n. 4, p. 842-857, DEC 2009.
Web of Science Citations: 10
Abstract

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)