Applicability of Green-Red Vegetation Index for Remote Sensing of Vegetation Phenology

We evaluated the use of the Green-Red Vegetation Index (GRVI) as a phenological indicator based on multiyear stand-level observations of spectral reflectance and phenology at several representative ecosystems in Japan. The results showed the relationships between GRVI values and the seasonal change...

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Bibliographic Details
Published inRemote sensing (Basel, Switzerland) Vol. 2; no. 10; pp. 2369 - 2387
Main Authors Motohka, Takeshi, Nasahara, Kenlo Nishida, Oguma, Hiroyuki, Tsuchida, Satoshi
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2010
Subjects
digital camera
Green-Red Vegetation Index
phenological eyes network
phenology
Remote sensing
spectral reflectance
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Summary:We evaluated the use of the Green-Red Vegetation Index (GRVI) as a phenological indicator based on multiyear stand-level observations of spectral reflectance and phenology at several representative ecosystems in Japan. The results showed the relationships between GRVI values and the seasonal change of vegetation and ground surface with high temporal resolution. We found that GRVI has the following advantages as a phenological indicator: (1) “GRVI = 0” can be a site-independent single threshold fordetection of the early phase of leaf green-up and the middle phase of autumn coloring, and (2) GRVI can show a distinct response to subtle disturbance and the difference of ecosystem types.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs2102369