Mangroves can absorb carbon dioxide, regulate climate, resist tsunamis and typhoons, and also help to purify seawater quality, giving play to the powerful carbon fixation function that terrestrial forests can't match. Compared with terrestrial forests, the carbon fixation capacity of mangroves is 2~ 10 times higher, so mangrove ecosystems are also called "blue carbon stars".

Mangrove is a woody plant community growing in intertidal zone of tropical and subtropical coast. It is called "marine forest" because it is partially submerged by seawater at high tide, and only the crown of the tree is exposed to the water. Mangroves are sometimes completely submerged by seawater and only emerge at low tide, so some people call them "undersea forests".

In order to adapt to the special habitats in the intertidal zone, such as high salinity, intermittent tidal flood, hypoxia, etc., mangroves have evolved unique roots rich in tannic acid and viviparous, as well as special skills such as discharging and secreting salt, which can be described as "special students" in the plant kingdom.

Mangroves are composed of mangrove plants and are rich in tannic acid, so they are named because the cut bark will be oxidized to red when exposed to the air.

Functions of mangroves:

Mangrove is one of the marine ecosystems with the highest biodiversity and productivity on the earth, and it is also one of the ecosystems with the strongest ecological service function.

Mangroves play an important role in resisting storm surges, protecting banks, maintaining biodiversity, purifying seawater, regulating climate and scientific research, and are known as "pioneers in land reclamation". In addition, mangroves also have important ecological functions of carbon fixation and storage.