气候变化领域集成服务门户(CCPortal): Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow

CCPortal

DOI	10.1002/ece3.1646
	Warming decreased and grazing increased plant uptake of amino acids in an alpine meadow
	Ma, Shuang; Zhu, Xiaoxue; Zhang, Jing; Zhang, Lirong; Che, Rongxiao; Wang, Fang; Liu, Hanke; Niu, Haishan; Wang, Shiping; Cui, Xiaoyong
通讯作者	Cui, XY (通讯作者)
发表日期	2015
ISSN	2045-7758
起始页码	3995
结束页码	4005
卷号	5 期号:18
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.
关键词	SOIL MICROBIAL BIOMASS ORGANIC NITROGEN TIBETAN PLATEAU CARBON AVAILABILITY INORGANIC NITROGEN EXTRACTION METHOD N AVAILABILITY BOREAL FORESTS ARCTIC TUNDRA ROOT UPTAKE
英文关键词	C-13-N-15-glycine; amino acid uptake; grazing; plant community; Qinghai-Tibetan Plateau; warming
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Ecology ; Evolutionary Biology
WOS记录号	WOS:000362090700012
来源期刊	ECOLOGY AND EVOLUTION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258464
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]. 中国科学院青藏高原研究所,2015,5(18).
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).
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).