By cluster analysis of the six mangrove distribution regions, the western coast of Africa and the eastern coast of America, the coast of Asia and eastern Pacific Archipelago and the coast of Oceania, were merged into two large regions respectively.

• 还利用区域间的相异度，对6个分布区域进行了聚类分析，结果认为，可以将亚洲东岸及东太平洋群岛与大洋洲沿岸，以及美洲东岸与非洲西岸分别归并为一个较大的区域。