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Nitrogen addition in a freshwater marsh alters the quality of senesced leaves, promoting decay rates and changing nutrient dynamics during the standing-dead phase
X. H. Zhang, R. Mao, C. C. Song, Y. Y. Song and P. M. Finnegan; 宋长春,宋艳宇
2017
发表期刊Plant and Soil
卷号417期号:1-2页码:511-521
摘要Nitrogen (N) is often the nutrient limiting the decomposability of shoots from macrophytes in wetlands. We aimed to determine the effects of increasing soil N availability on the decomposition of shoots during the standing-dead phase.We measured the quality of senesced leaves from graminoids and their subsequent aerial decay under different N addition treatments (Control, 0 kg N ha(-1) yr.(-1); N60, 60 kg N ha(-1) yr.(-1); N120, 120 kg N ha(-1) yr.(-1); N240, 240 kg N ha(-1) yr.(-1)) in a temperate marsh.Nitrogen addition increased N concentrations in senesced leaves and often increased phosphorus (P) concentrations. The exponential decay constants (k) of leaves from the N120 and N240 treatments were higher than the control treatment during aerial decay. Nitrogen amounts (in percentage terms) remaining in decaying leaves always significantly decreased after N addition, but the effects on P amounts varied with N addition rates. The nutrient amounts remaining in leaves during the standing-dead phase had negative relationships with the initial nutrient concentrations.Soil N availability exerts remarkable effects on the decay process of standing litters by altering the initial quality, and thus the biogeochemical cycling in temperate wetlands.
DOI10.1007/s11104-017-3276-z
WOS记录号WOS:000407750900035
引用统计
文献类型期刊论文
条目标识符http://ir.iga.ac.cn/handle/131322/7667
专题湿地与全球变化学科组
通讯作者宋长春,宋艳宇
推荐引用方式
GB/T 7714
X. H. Zhang, R. Mao, C. C. Song, Y. Y. Song and P. M. Finnegan,宋长春,宋艳宇. Nitrogen addition in a freshwater marsh alters the quality of senesced leaves, promoting decay rates and changing nutrient dynamics during the standing-dead phase[J]. Plant and Soil,2017,417(1-2):511-521.
APA X. H. Zhang, R. Mao, C. C. Song, Y. Y. Song and P. M. Finnegan,&宋长春,宋艳宇.(2017).Nitrogen addition in a freshwater marsh alters the quality of senesced leaves, promoting decay rates and changing nutrient dynamics during the standing-dead phase.Plant and Soil,417(1-2),511-521.
MLA X. H. Zhang, R. Mao, C. C. Song, Y. Y. Song and P. M. Finnegan,et al."Nitrogen addition in a freshwater marsh alters the quality of senesced leaves, promoting decay rates and changing nutrient dynamics during the standing-dead phase".Plant and Soil 417.1-2(2017):511-521.
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