Wetlands, that lie at the interface between land and water, are very diverse, which renders all the more difficult any attempt at a definitive classification.
However, in order to clarify things, the Ramsar Convention classified wetlands in 3 main types:
As a matter of fact, some « complex » wetland types, such as deltas, can themselves include other, « simple » wetland types such as lagoons, marshes, saltpans, ricefields…
Here is the distribution of main wetland types in a typical watershed (Click on the wetland you’re interested in, to obtain a definition):
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