Effects of Hydrological Interference on Suaeda salsa in Different Saline Habitats
Soaked in fresh water and seawater were designed to simulate the river flooding and inwelling to study the effects of hydrological interference on the individuals and population of Suaeda salsa in different saline habitats.The results showed that soaked in fresh water improved the seed germination rate and uniformi-ty,while soaked in seawater reduced the seed germination rate under different salinity.The allocation of plant biomass was changed by hydrological interference in the growth period of S.salsa,and the same hydrological interference had different influence to biomass under different soil salinity.Under low soil salinity,soaked in fresh water and seawater could promote the accumulation of dry matter at the same level;the promoting effect was more obvious when soaked in fresh water than that soaked in seawater under moderate salinity;the promo-ting effect of the two hydrological interference was not obvious under high soil salinity.The hydrological inter-ference reduced the population density and the intensity of intraspecific competition,and expanded the in-traspecific niche of S.salsa.Moreover,hydrological interference could improve the productivity of S.salsa un-der low soil salinity.
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