生态学杂志2016，Vol.35Issue(3)：567-575,9.DOI:10.13292/j.1000-4890.201603.029
云南普洱季风常绿阔叶林152种木本植物叶片C、N、P化学计量特征
Stoichiometry of leaf C, N and P across 152 woody species of a monsoon broad-leaved evergreen forest in Pu'er, Yunnan Province
摘要
Abstract
The monsoon broad-leaved evergreen forests are one of the zonal vegetation types with most complex structure,highest productivity,and most abundant biodiversity.Thus,clarifying the changes in stoichiometric characteristics of forests is critical to understanding nutrient cycling,limiting factors and stability mechanisms of the ecosystem.We analyzed the leaf carbon (C),nitrogen (N),and phosphorous (P) concentrations of 152 wood species from 29 plots (30 m×30 m in size) in Pu'er,Yunnan Province.The results showed that the arithmetic means of leaf C,N and P concentrations of the 152 species were 458.17,20.88 and 1.42 mg · g-1,with the coefficients of variation of 7.12％,34.89％,51.81％ respectively.The arithmetic means of leaf C/N,C/P and N/P were 24.96,394.74 and 16.50,with the coefficients of variation of 33.46％,38.79％ and 51.44％ respectively.Leaf C concentration was significantly negatively correlated with leaf N concentration (P=0.005).Leaf N concentration was significantly positively correlated with leaf P concentration (P＜0.001).However,no significant relationship was found between C and P concentration (P=0.078).The variations of leaf N,P and C/N,C/P,N/P in different families were relatively large,compared with that of leaf C.Except for leaf C,significant differences of leaf N,P,C/N,C/P,and N/P were observed between trees and shrubs,and between trees and lianas (P＜0.05).N and P concentrations of trees were significantly lower than those of shrubs and lianas.The relatively high N/P ratio (16.50) of the overall 152 woody species implied that P was a limit factor of monsoon evergreen broad-leaved forest in Pu'er,Yunnan Province.关键词
季风常绿阔叶林/化学计量学/叶片/生长型/叶碳氮磷Key words
monsoon broad-leaved evergreen forest/stoichiometry/lamina/growth-form/leaf carbon/nitrogen/phosphorus引用本文复制引用
黄小波,刘万德,苏建荣,李帅锋,郎学东..云南普洱季风常绿阔叶林152种木本植物叶片C、N、P化学计量特征[J].生态学杂志,2016,35(3):567-575,9.基金项目
公益性行业专项(201404211)和国家自然科学基金项目(31200461和31370592)资助. （201404211）
