The Study of the Stoichiometric Characteristics of Soil Carbon,Nitrogen and Phosphorus in Picea Purpurea Forests of Different Ages
In order to investigate the effects of soil organic carbon(C),total nitrogen(N)and total phosphorus(P)mass fractions and ecological stoichiometric characteristics in different growth and development stages of Picea purpurea,soil samples from 0-10cm,>10-20cm,and>20-30cm in Maixiu Forest Farm,Huangnan Prefecture were collected to determine the mass fractions of soil organic carbon(C),total nitrogen(N),and total phosphorus(P)across the three forest ages and at various soil depths,and calculate the corresponding stoichiometric ratios,with the use of the five-spot sampling method.The results showed that forest age and soil depth significantly influenced the concentrations of soil organic carbon(C),total nitrogen(N)and total phosphorus(P)(P<0.01),and also significantly affected the stoichiometric ratios of carbon to phosphorus and nitrogen to phosphorus(N∶P)ratio(P<0.01),and there was no significant impact on the carbon to nitrogen(C∶N)ratio(P>0.05).Soil organic carbon significantly influenced the C∶P ratio,and soil nitrogen significantly influenced the N∶P ratio.
Picea purpureaEcological stoichiometricNitrogen to Phosphorus ratioForest age
万方数据
维普
