2011 · 12 citations · 0 references
Life SciencesEcologySoil SciencesNutrient CyclingPlant EcologySoil BiogeochemistryEcological StoichiometryEcosystem StoichiometryLitter DecompositionPlant-soil InteractionsWetland BiogeochemistryWetland Soil BiogeochemistryCarbon:nitrogen:phosphorus RatiosCarbon:nitrogen:phosphorus StoichiometryElemental Ratios In BiomassNitrogen To Phosphorus RatiosNitrogen:phosphorus RatioPlant Litter Contributions To Soil CarbonWetland Carbon Exchange
The ecological stoichiometric ratios of carbon(C),nitrogen(N) and phosphorus(P) are the properties of ecosystem process and function.The seasonal dynamics of C,N and P in live plant-litter-soil system were measured in Phragmites australis and Cyperus malaccensis var.brevifolius wetlands from Minjiang River estuary.The results showed that seasonal averaged C,N and P concentrations were CNP in live plant,litter and soil.C and N concentrations were higher in live plant,litter than soil and the order of P concentration was uncertain between various plant organs and soil.Seasonal averaged C,N,P stoichiometric ratios were C ∶ PC ∶ NN ∶ P in live plant,litter and soil in the two wetlands.C ∶ N in P.australis wetland was in order of litterlive plantsoil,while they were in order of live plantlittersoil in C.malaccensis var.brevifolius wetland.C ∶ P and N ∶ P were litterlive plantsoil in both wetlands.The C,N,P stoichiometric ratios may reflect the exchange of C,N,P and the ecological function of plant community.