Study On Growth Ecological Stoichiometry Relation Of Suaeda Heteropterain Liaohe River Estuary Wetland

Study on growth and carbon, nitrogen, phosphorus of ecological stoichiometryof Suaeda heteroptera of estuarine tidal flat wetland typical pioneer plant were very important for understanding the vegetation health in the tidal wetlands. In this paper, Suaeda heteroptera which grew in Liaohe River Estuary Wetland were as the research object. Through field sampling, laboratory analysis of the growth indexes, carbon, nitrogen, and phosphorus content of Suaeda heteroptera and the inorganic nitrogen, inorganic phosphorus content of soil. Discusses:(1) the growth index of Suaeda heteroptera in the tidal wetlands changes along with the growth time.(2) The individuals allometric case in Suaeda heteroptera populations in within the tidal.(3) Carbon, nitrogen and phosphorus content and ecological stoichiometrycharacteristics of different organs of Suaeda heteropteraof the tidal flat in different growth periods.(4) The soil inorganic nitrogen and inorganic phosphorus content distribution ofSuaeda heteropteraof the tidal flat in different growth periods.The results showed that:(1) Liaohe River Estuary Wetland Suaeda heteroptera height, underground fresh weight growth in line among the populations of individual differences in performance Logistic Growth Model.(2) Suaeda heteroptera growth indexes of underground fresh weight> ground fresh weight ≥single blade fresh weight> leaf number ≥height.(3) of each growth index in different periods between any two correlations were highly significant positive correlation(p <0.01).(4) Suaeda heteroptera ground fresh weight and height, the underground part of the fresh weight, number of leaves, allometric relationship between a single blade fresh weight with increasing growth period reduced their relevance.(5) There was a significant allometric relationship(Adj.R2> 0.8782) between the volume and surface fin component.(6) were significantly associated total carbon content of Suaeda heteroptera roots and stems(p <0.01), significantly correlated total nitrogen content of Suaeda heteroptera roots and stems(p <0.01), Suaeda heteroptera roots, stems, significant correlation phosphorus content in leaves(P <0.01). Total carbon content of Suaeda heteroptera roots increase decays exponentially with increasing growth period, total nitrogen and total phosphorus content of Suaeda heteroptera stems with increased growth period decays exponentially increasing total carbon Suaeda heteroptera stems and leaves, total nitrogen, total phosphorus with the growth periods and different fluctuation.(7) in different periods in different organs of Suaeda heteroptera total nitrogen, total phosphorus larger differences, different nitrogen and phosphorus use of ecological policy different Suaeda heteroptera growth period.(8) Suaeda heteroptera root C: N with the growth time increases exponentially increased attenuation, Suaeda heteroptera leaf C: N, C: P increased with the growth of time did not change significantly(p <0.05). Suaeda heteroptera N: P showed root> leaf> stem, and Suaeda heteroptera root, stem, leaf N: P is greater than 14, showing P is the main limiting element.(9) Suaeda heteroptera soil inorganic nitrogen, inorganic phosphorus content decreased from the surface to the bottom, a large Suaeda heteroptera growth early and late vertical space on soil inorganic nitrogen, inorganic phosphorus content differences. Initial growth, the growth of Suaeda heteroptera absorb a large number of surface soil inorganic nitrogen, inorganic phosphorus; growth stage, Suaeda heteroptera litter decomposition in the soil surface, the surface of inorganic nitrogen, inorganic phosphorus content increased.(10) Suaeda heteroptera soil inorganic nitrogen in different growth stages vertical variability of soil inorganic phosphorus is greater than the vertical variability.