中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effects of P addition on plant C:N:P stoichiometry in an N-limited temperate wetland of Northeast China

文献类型:期刊论文

作者Mao, Rong1,2; Chen, Hui-Min1,3; Zhang, Xin-Hou1; Shi, Fu-Xi1; Song, Chang-Chun1
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2016-07-15
卷号559页码:1-6
关键词c:n:p Stoichiometric Ratios Deyeuxia Angustifolia Eutrophication Freshwater Marsh Glyceria Spiculosa Species Dominance
ISSN号0048-9697
DOI10.1016/j.scitotenv.2016.03.158
英文摘要

Phosphorus (P) enrichment induced by anthropogenic activities results in modified plant nutrient status, which potentially alters the stoichiometry of carbon (C), nitrogen (N), and P in plants. However, how increased P availability changes plant C:N:P stoichiometry at different hierarchical scales is unclear in N-limited ecosystems. In this study, we conducted a four-level P addition experiment (0, 1.2, 4.8, and 9.6 g P m(-2) year(-1)) to elucidate the effect of P enrichment on plant C:N:P stoichiometric ratios at both the species and community levels in a freshwater wetland in the Sanjiang Plain, Northeast China. We found that species- and community-level plant C:N:P stoichiometry responded consistently to six years of P addition, although there was a shift in species dominance. Phosphorus addition increased plant N and P concentrations and thus decreased C:N, C:P, and N:P ratios irrespective of the P addition levels. These similar change trends at different scales resulted from the identical responses of plant N and P concentrations in different species to P addition. Moreover, plant N concentration exhibited an increasing trend with increasing P addition levels, whereas plant C:N ratio showed a declining trend. At the community level, P addition at the rates of 1.2, 4.8, and 9.6 g P m(-2) year(-1) decreased the C:N ratio by 24%, 27%, and 34%; decreased the C: P ratio by 33%, 35%, and 38%; and decreased the N:P ratio by 12%, 10%, and 6%, respectively. Our results indicate that the stoichiometric responses to P addition are scale-independent, and suggest that altered plant C:N:P stoichiometry induced by P enrichment would stimulate organic matter decomposition and accelerate nutrient cycles in N-limited temperate freshwater wetlands. (C) 2016 Elsevier B.V. All rights reserved.

WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000375136600001
出版者ELSEVIER SCIENCE BV
源URL[http://119.78.100.138/handle/2HOD01W0/2451]  
专题生态过程与重建研究中心
作者单位1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Three Gorges Inst Ecol Environm, Chongqing 400714, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Mao, Rong,Chen, Hui-Min,Zhang, Xin-Hou,et al. Effects of P addition on plant C:N:P stoichiometry in an N-limited temperate wetland of Northeast China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,559:1-6.
APA Mao, Rong,Chen, Hui-Min,Zhang, Xin-Hou,Shi, Fu-Xi,&Song, Chang-Chun.(2016).Effects of P addition on plant C:N:P stoichiometry in an N-limited temperate wetland of Northeast China.SCIENCE OF THE TOTAL ENVIRONMENT,559,1-6.
MLA Mao, Rong,et al."Effects of P addition on plant C:N:P stoichiometry in an N-limited temperate wetland of Northeast China".SCIENCE OF THE TOTAL ENVIRONMENT 559(2016):1-6.

入库方式: OAI收割

来源:重庆绿色智能技术研究院

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