Characteristics of soil seed bank in saline-alkali wetlands of Tianjin Binhai New Area.
This paper studied typical wetlands'soil seed banks(SSB) in Tianjin Binhai New Area and analyzed the composition,diversity and temporal and spatial distribution of SSB in three standard plots through field investigation and germinated seeds.Results showed that there were 26 species in the SSB,with species density 6,809～30,644/m2 and ecological dominance 0.51～0.81.The diversity index showed a relatively low value,with the highest Shannon-Wiener value of 1.78.The similarity indicator between SSB and aboveground vegetation was low as well,with the lowest value of 0.21.Vertical distribution demonstrated significantly obvious condition with 0-5cm having the most species.Furthermore,it still explained the germinating regulation changing over time,which provided reference for vegetation restoration using SSB.