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Alternative TitleResponses of leaf functional traits and nitrogen and phosphorus stoichiometry in Abies fabiri seedlings in Gongga Mountain to simulated nitrogen deposition
羊留冬1,2; 王根绪1; 杨阳1,2; 杨燕1
Corresponding Author杨燕
Source Publication生态学杂志
Other Abstract

Abies fabiri is one of the dominant conifers in the subalpine area of western Sichuan Province,Southwest China.Taking A.fabiri seedlings as test materials,this paper studied their leaf functional traits and N and P stoichiometry under effects of simulated nitrogen deposition.To simulate nitrogen deposition,ammonium nitrate solution(50 kg N·hm~(-2)·a-1) was weekly sprayed over the growth season(from May to October) of 2009 and 2010.After the two growth seasons,the total biomass,leaf dry weigh,leaf mass ratio,leaf N and P concentrations,and leaf N:P ratio of the seedlings under ammonium nitrate spraying increased by 11.29%,46.70%,41.40%,37.30%,22.33% and 6.43%,respectively,while specific leaf area(SLA) decreased by 6.61%,as compared with the control.There existed significant differences in the leaf dry weigh,leaf mass ratio,leaf N concentration,and leaf N:P ratio between ammonium nitrate spraying and the control,and the leaf dry weight had a strong linear correlation with leaf N concentration.The total biomass,leaf dry weight,leaf N and P concentrations,and leaf N:P ratio of seedlings under ammonium nitrate spraying were higher in the second growth season than in the first growth season.This study demonstrated that nitrogen deposition promoted the leaf growth of A.fabiri seedlings significantly,and increased the leaf N and P concentrations and leaf N:P ratio.However,the variation of leaf N:P ratio under nitrogen supply suggested that the seedling growth was still limited by the shortage of N supply.It was suggested that A.fabiri seedlings had cumulative effect for N.

Keyword氮沉降 N、p化学计量学 峨眉冷杉 幼苗生长 贡嘎山
Subject AreaQ948
Indexed ByCSCD ; 北大中文核心
Funding Organization中国科学院知识创新工程重要方向项目(KZCX2-YW-331-2、KZCX2-EW-309-2) ; 中国科学院“西部之光”人才培养计划(YOR2100100)
Citation statistics
Cited Times:7[CSCD]   [CSCD Record]
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
羊留冬,王根绪,杨阳,等. 峨眉冷杉幼苗叶片功能特征及其N、P化学计量比对模拟大气氮沉降的响应[J]. 生态学杂志,2012,31(1):44-50.
APA 羊留冬,王根绪,杨阳,&杨燕.(2012).峨眉冷杉幼苗叶片功能特征及其N、P化学计量比对模拟大气氮沉降的响应.生态学杂志,31(1),44-50.
MLA 羊留冬,et al."峨眉冷杉幼苗叶片功能特征及其N、P化学计量比对模拟大气氮沉降的响应".生态学杂志 31.1(2012):44-50.
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