The author divided the dominant plants and leading associated plants of vegetation on coastal wetlands in the Yellow River Delta and the Southern Laizhou Bay into three eco-adapted types of halophytes

hydrophytes and amphiphytes

and compared the differences of vegetation types

the distribution and evolvement of the vegetation there.The dominant plants of vegetation on middle and high tide foreshore wetlands in the Yellow River Delta are halophytes such as Suaeda heterobtera and Tamarix chinensix

and the vegetation on coastal wetlands in beach are fresh water marsh and meadow where the dominant plants are hydrophytes and amphiphytes such as Phragmities Communis

Typha orientalis and Aeluropus littoralis var sinensis.The vegetation has evolved rapidly into bare tide foreshore

salt marsh in tide foreshore and beach

fresh water marsh meadow and farmland in the latest 30 years.Much of vegetation on the wetlands has been replaced by artificial wetlands.There is no vegetation on tide foreshore in the Southern Laizhou Bay

but there are salt marshes in beach where the dominant plants are halophytes such as Suaeda heterobtera

Suaeda glauca and Tamarix chinensix.Salt marsh and fresh water marsh have evolved into meadow

and much of vegetation of salt marshes in the Southern Laizhou Bay has disappeared due to the construction of saltern and ponds of shrimps and crabs in the latest 30 years.