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

作者：Motohka Takeshi^*; Nasahara Kenlo Nishida; Oguma Hiroyuki; Tsuchida Satoshi

来源：Remote Sensing, 2010, 2(10): 2369-2387.

DOI：10.3390/rs2102369

• phenology
• remote sensing
• spectral reflectance
• digital camera
• Green-Red Vegetation Index
• phenological eyes network

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 for detection 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.

• 出版日期2010-10