| Wetland vegetation biodiversity was investigated by the method of field investigation and analyzed with biodiversity indexes, including importance value, species richness index, Simpson index, Shannon-Wiener index and Pielou species evenness index. The results showed that there were totally 125 families, 201 genuses, and 334 species of wetland
vegetation in Guangzhou, among which Poaceae, Asteraceae and Papilionaceae were the predominant families. For costal
wetlands, Digitaria sanguinalis, Cyperus malaccensis, Phragmites australis and Cyrtococcum patens were the predominant
species. For riverine wetlands, the predominant species were D. sanguinalis, Cynodon dactylon and Commelina communis.
While the predominant species of constructed wetlands were Nelumbo nucifera, D. sanguinalis, C. dactylon and C. patens.
The order of species richness indexes was riverine wetlands > constructed wetlands > coastal wetlands, while the other
three indexes爷order was the same: coastal wetlands > riverine wetlands > constructed wetlands. But there was no
difference among different indexes. At the end, some suggestions about wetlands vegetation protection were put forward.
The suggestions included to make ecology priority as the principle, to formulate sustainable development and protection
plan of wetlands, to establish efficient joint administration mechanism, and to strengthen the research and monitoring of
wetland vegetation and train professional talents. |
