Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow
文献类型：期刊论文
| 作者 | Ma, Shuang ; Zhu, Xiaoxue ; Zhang, Jing ; Zhang, Lirong ; Che, Rongxiao ; Wang, Fang ; Liu, Hanke ; Niu, Haishan ; Wang, Shiping ; Cui, Xiaoyong |
| 刊名 | ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2015-09-01 |
| 英文摘要 | Organic nitrogen (N) uptake by plants has been recognized as a significant component of terrestrial N cycle. Several studies indicated that plants have the ability to switch their preference between inorganic and organic forms of N in diverse environments; however, research on plant community response in organic nitrogen uptake to warming and grazing is scarce. Here, we demonstrated that organic N uptake by an alpine plant community decreased under warming with C-13-N-15-enriched glycine addition method. After 6years of treatment, warming decreased plant organic N uptake by 37% as compared to control treatment. Under the condition of grazing, warming reduced plant organic N uptake by 44%. Grazing alone significantly increased organic N absorption by 15%, whereas under warming condition grazing did not affect organic N uptake by the Kobresia humilis community on Tibetan Plateau. Besides, soil NO3-N content explained more than 70% of the variability observed in glycine uptake, and C:N ratio in soil dissolved organic matter remarkably increased under warming treatment. These results suggested warming promoted soil microbial activity and dissolved organic N mineralization. Grazing stimulated organic N uptake by plants, which counteracted the effect of warming.; Organic nitrogen (N) uptake by plants has been recognized as a significant component of terrestrial N cycle. Several studies indicated that plants have the ability to switch their preference between inorganic and organic forms of N in diverse environments; however, research on plant community response in organic nitrogen uptake to warming and grazing is scarce. Here, we demonstrated that organic N uptake by an alpine plant community decreased under warming with C-13-N-15-enriched glycine addition method. After 6years of treatment, warming decreased plant organic N uptake by 37% as compared to control treatment. Under the condition of grazing, warming reduced plant organic N uptake by 44%. Grazing alone significantly increased organic N absorption by 15%, whereas under warming condition grazing did not affect organic N uptake by the Kobresia humilis community on Tibetan Plateau. Besides, soil NO3-N content explained more than 70% of the variability observed in glycine uptake, and C:N ratio in soil dissolved organic matter remarkably increased under warming treatment. These results suggested warming promoted soil microbial activity and dissolved organic N mineralization. Grazing stimulated organic N uptake by plants, which counteracted the effect of warming. |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/5512]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Ma, Shuang,Zhu, Xiaoxue,Zhang, Jing,et al. Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow[J]. ECOLOGY AND EVOLUTION,2015. |
| APA | Ma, Shuang.,Zhu, Xiaoxue.,Zhang, Jing.,Zhang, Lirong.,Che, Rongxiao.,...&Cui, Xiaoyong.(2015).Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow.ECOLOGY AND EVOLUTION. |
| MLA | Ma, Shuang,et al."Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow".ECOLOGY AND EVOLUTION (2015). |
入库方式： OAI收割
来源：西北高原生物研究所
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