Effects of elevated carbon dioxide and nitrogen addition on foliar stoichiometry of nitrogen and phosphorus of five tree species in subtropical model forest ecosystems |
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出 版 社：Environmental Pollution |
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发表时间：2012 |
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台 站：鼎湖山森林生态系统定位研究站 |
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作 者：黄文娟，周国逸，刘菊秀，张德强等
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点 击 率：569645 |
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关 键 字(英文)：Foliar nitrogen,Foliar phosphorus,Stoichiometry,N2 fixer,Subtropics |
| 摘 要(英文)：The effects of elevated carbon dioxide (CO2) and nitrogen (N) addition on foliar N and phosphorus (P) stoichiometry were investigated in five native tree species (four non-N2 fixers and one N2 fixer) in opentop chambers in southern China from 2005 to 2009. The high foliar N:P ratios induced by high foliar N and low foliar P indicate that plants may be more limited by P than by N. The changes in foliar N:P ratios were largely determined by P dynamics rather than N under both elevated CO2 and N addition. Foliar N:P ratios in the non-N2 fixers showed some negative responses to elevated CO2, while N addition reduced foliar N:P ratios in the N2 fixer. The results suggest that N addition would facilitate the N2 fixer rather
than the non-N2 fixers to regulate the stoichiometric balance under elevated CO2. |
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 黄文娟-2012-Environmental Pollution-Effects of elevated carbon dioxide and nitrogen addition on foliar stoichiometry of nitrogen and phosphorus of five tree species….pdf |
