文献类型：期刊文献

中文题名：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

英文题名：Stoichiometry of leaf C,N and P across 152 woody species of a monsoon broad-leaved evergreen forest in Pu'er,Yunnan Province

作者：黄小波[1,2] 刘万德[1,2] 苏建荣[1,2] 李帅锋[1,2] 郎学东[1,2]

第一作者：黄小波

机构：[1]中国林业科学研究院资源昆虫研究所;[2]国家林业局普洱森林生态系统定位研究站

年份：2016

卷号：35

期号：3

起止页码：567-575

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：公益性行业专项(201404211);国家自然科学基金项目(31200461和31370592)资助

语种：中文

中文关键词：季风常绿阔叶林;化学计量学;叶片;生长型;叶碳氮磷

外文关键词：monsoon broad-leaved evergreen forest; stoichiometry; lamina; growth-form; leaf carbon / nitrogen / phosphorus

分类号：Q948.15

摘要：季风常绿阔叶林是亚热带地区结构最复杂、生产力最高、生物多样性最丰富的地带性植被类型之一,研究其化学计量学特征对于认识生态系统养分循环特征和限制状况以及系统稳定机制具有重要意义。本文基于云南普洱地区29块30 m×30 m的典型样地调查与取样,测定了152种木本植物叶片C、N、P含量,分析了其化学计量特征。结果表明,该区域季风常绿阔叶林叶片C、N、P含量算术平均值分别为458.17、20.88和1.42 mg·g-1,变异系数分别为7.12%、34.89%和51.81%;C/N、C/P及N/P算术平均值分别为24.96、394.74和16.50,变异系数分别为33.46%、38.79%和51.44%。相关分析表明,C含量和N含量呈极显著负相关(P=0.005),C含量和P含量负相关程度不明显(P=0.078),N含量和P含量呈极显著正相关(P<0.001)。不同科植物叶片除C含量整体变异较小外,N、P及C/N、C/P、N/P变异较大。乔木与灌木,以及乔木与藤本之间,叶片除C含量的差异不显著外,N、P、C/N、C/P、N/P的差异均达显著水平(P<0.05),其中乔木的N、P含量均显著低于灌木和藤本。152种木本植物叶片N/P算术平均值为16.50,说明普洱季风常绿阔叶林植物总体受P元素限制。
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×30m 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.