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

Remote Sensing

Hiroki Yoshioka¹  Tomoaki Miura¹  José A. M. Demattê¹  Karim Batchily¹ 

[1] ¹Department of Information Science and Technology, Aichi Prefectural University, 1522-3 Kumabari, Nagakute, Aichi 480-1198, Japan

关键词: spectral vegetation index;    soil noise;    soil line;    vegetation isoline;   

DOI  :  10.3390/rs1040842

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.