气候变化领域集成服务门户(CCPortal): Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem

CCPortal

DOI	10.1016/j.still.2015.12.012
	Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem
	Jiang, Lili; Wang, Shiping; Luo, Caiyun; Zhu, Xiaoxue; Kardol, Paul; Zhang, Zhenhua; Li, Yaoming; Wang, Changshun; Wang, Yanfen; Jones, Davey L.
通讯作者	Jiang, LL (通讯作者)
发表日期	2016
ISSN	0167-1987
EISSN	1879-3444
起始页码	156
结束页码	164
卷号	158
英文摘要	The production and fate of inorganic N as regulated by environmental change are relatively well understood, but we know comparatively little about how these factors influence dissolved organic nitrogen (DON). We measured total N, DON and dissolved inorganic nitrogen (DIN) concentrations in the soil solution and plant N uptake in a factorial warming x grazing experiment in a Tibetan alpine meadow. Results showed that warming significantly decreased DON concentration by up to 36%. The effect of warming on DON concentration in the soil solution varied with sampling date and soil depth. However, our results showed that moderate grazing set off the effect of warming on DON concentration in the soil solution. Grazing increased soil DON, opposite to the effect of warming. Previous studies have found warming to increase a range of factors which contribute to the supply of DON in soil. Our results show that the observed decrease of DON under warming was correlated with plant N uptake, suggesting that warming stimulated processes making DON available to plants. Our study highlights the complex interaction of land management regime and climate warming in the regulation of DON cycling in N limiting environments. (C) 2016 Elsevier B.V. All rights reserved.
关键词	TEMPERATURE SENSITIVITY SOIL MICROBES AMINO-ACIDS AVAILABILITY GRASSLAND RESPONSES DYNAMICS MATTER PLANTS POOLS
英文关键词	Alpine meadow; Dissolved organic nitrogen; Plant N uptake; Nitrogen cycling; Global warming
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000373244700016
来源期刊	SOIL & TILLAGE RESEARCH
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/258790
推荐引用方式 GB/T 7714	Jiang, Lili,Wang, Shiping,Luo, Caiyun,et al. Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem[J]. 中国科学院青藏高原研究所,2016,158.
APA	Jiang, Lili.,Wang, Shiping.,Luo, Caiyun.,Zhu, Xiaoxue.,Kardol, Paul.,...&Jones, Davey L..(2016).Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem.SOIL & TILLAGE RESEARCH,158.
MLA	Jiang, Lili,et al."Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem".SOIL & TILLAGE RESEARCH 158(2016).