Ecological Stoichiometry Characteristics of Leaf Nitrogen, Phosphorous and Sulfur of Tree Species of Plantation in South China
The objective of this study was to explore the ecological stoichiometry of nitrogen,phosphorous and sulfur of plantation at different ages in south subtropics.We collected the leaves of 21 afforestation tree species in needle-broadleaf mixed plantations and Eucalyptus plantations in Yunyong Forest Farm in Foshan,Guangdong.The N,P and S concentrations were determined to analyze the correlations between these elements and ecological stoichiometry differences at different ages.The results were as following:the average concentrations of N,P and S in leaves were 16.71 ± 0.79,1.07 ± 0.05 and 1.56 ± 0.09 mg/g,respectively.There were significant differences of ecological stoichiometry characteristics among species.N,P and S concentrations were positively related with each other.Closely related species were significantly different at absorbing N,but similar at P and S.For the 6 common species at different age,changing trends of N,P and S ecological stoichiometry characteristics with growth were different among species.There was no apparent change trend of N:P with age for 32 samples.This study indicate that species specificity should be paid more attention in plantation fertilization management in south subtropics.
ecological stoichiometryleafnitrogen, phosphorous and sulfur concentrationplantationSouth China
NETL
NSTL
万方数据
维普
