Mangroves periodic flooding due to its growing environment, which has dfifferent spectral
gharacteristics with trees,and vegetation. It has a strong absorption of the blue and red colour. According
to the study reported [14], the 460nm ~ 502nm with a "trough zone ", the reflection rate of about 2 to 3%
of green area in particular has a high infrared reflectivity, in 526 ~ 580nm there is a green Light reflection
peak reflectivity of about 8 to 9%, between 700 ~ 745nm in the red to the infrared band of a transition
band of the "red edge" characteristic, showing a sharp increase in reflectivity, reflectivity from 5% to 40%
to 50%. Between 700 ~ 930nm in a reflection peak reflectivity is 40% ~ 58%. Band at 785 ~ 830nm to a
reflection peak reflectivity of about 45% to 55%.We can use this feature to extract information of
mangroves, as well as learned extraction techniques and methods from other green vegetation.