Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow | |
Ma, Shuang1; Zhu, Xiaoxue2; Zhang, Jing1; Zhang, Lirong3; Che, Rongxiao1; Wang, Fang1; Liu, Hanke1; Niu, Haishan3,4; Wang, Shiping5,6; Cui, Xiaoyong1,4 | |
2015-09-01 | |
发表期刊 | ECOLOGY AND EVOLUTION |
卷号 | 5期号:18页码:3995-4005 |
文章类型 | Article |
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. |
关键词 | C-13-n-15-glycine Amino Acid Uptake Grazing Plant Community Qinghai-tibetan Plateau Warming |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
关键词[WOS] | SOIL MICROBIAL BIOMASS ; ORGANIC NITROGEN ; TIBETAN PLATEAU ; CARBON AVAILABILITY ; INORGANIC NITROGEN ; EXTRACTION METHOD ; N AVAILABILITY ; BOREAL FORESTS ; ARCTIC TUNDRA ; ROOT UPTAKE |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology |
WOS类目 | Ecology |
WOS记录号 | WOS:000362090700012 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/5512 |
专题 | 中国科学院西北高原生物研究所 |
作者单位 | 1.Univ Chinese Acad Sci, Dept Life Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 3.Univ Chinese Acad Sci, Dept Resource & Environm, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Huairou Ecol & Environm Observ, Beijing 101408, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China 6.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China |
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,2015,5(18):3995-4005. |
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,5(18),3995-4005. |
MLA | Ma, Shuang,et al."Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow".ECOLOGY AND EVOLUTION 5.18(2015):3995-4005. |
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