Carbon, nitrogen and phosphorus ecological stoichiometric ratios among live plant-litter-soil systems in estuarine wetland
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 C>N>P 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:P>C:N>N:P in live plant, litter and soil in the two wetlands. C : N in P. Australis wetland was in order of litter>live plant>soil, while they were in order of live plant>litter>soil in C. Malaccensis var. Brevifolius wetland. C:P and N:P were litteolive plant>soil in both wetlands. The C, N, P stoichiometric ratios may reflect the exchange of C, N, P and the ecological function of plant community.
C, N, Pecological stoichiometryplantsoilMinjiang River estuary
国家科技期刊平台
NSTL
万方数据
维普
