Abstract: The vegetations in coastal wetlands of Jiaozhou Bay are mainly classified into 4 vegetation types and 15 plant communities. As the edificators, dominant species and main accompanying species in wetland vegetations, the 75 species of vascular plants belong to 35 families and 61 genera, among which, Gramineae, Chenopodiceae and Polygonaceac are most important. Based on the plant morphological characters, surface water condition and soil salinization, the vascular plants in coastal wetlands of Jiaozhou Bay are classified into 4 eco-adapted groups, i.e., halophtes, hydrophtes, amphiphytes and psammophytes. The genera of vascular plants have 13 areal-types. 24 genera occupying 39.3% of the total belong to cosmopolitan-areal type, reflecting that the vascular plants have universals in geographical distribution. The genera belonging to temperate- and tropic-areal types and occupying 52.4% of the total are the other dominant genera. In light to the degradation of coastal wetlands in Jiaozhou Bay, some countermeasures were put forward to protect the vascular plants.

Key words: Macrobrachium nipponense, Reproductive evolution, Spermatogenesis, Spermatogenic cell, Cell nucleus