GCI

  The chlorophyll index (CI) is applied to calculate the total amount of chlorophyll in plants. In general, this index contains two separate bands: CIgreen and CIred-edge. These bands are responsive to slight variations in the chlorophyll content and are consistent for most types of plants. In other words, the CI is a relatively accurate indicator of plant health and can be effectively used in nutrient management throughout the season. 

The green chlorophyll index’s (CIgreen Or GCI) main strength is that it can be successfully used for a wide range of plant species. GCI index is calculated as a ratio of the chlorophyll’s reflectance in the NIR band over the reflectance in the green band using the following equation:

• GCI = (NIR /GREEN) - 1

The values range is -1 to +1 and we use the same colour map as the NDVI colour map shown to the right of the image.