干旱区生态环境知识资源中心(Arid): Abiotic and biotic controls of soil dissolved organic nitrogen along a precipitation gradient on the Tibetan plateau

Arid

DOI	10.1007/s11104-020-04613-1
	Abiotic and biotic controls of soil dissolved organic nitrogen along a precipitation gradient on the Tibetan plateau
	Jiang, Lili; Wang, Shiping; Pang, Zhe; Wang, Changshun; Meng, Fandong; Lan, Zhichun; Zhou, Xiaoqi; Li, Yaoming; Zhang, Zhenhua; Luo, Caiyun; Jones, Davey L.; Rui, Yichao; Wang, Yanfen
通讯作者	Wang, YF
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
英文摘要	Background and aims Dissolved organic nitrogen (DON) has been increasingly recognized as a crucial component of the terrestrial nitrogen (N) cycle that regulates the ecosystem feedback to climate change. Yet, little information is available about the factors that control soil DON in the alpine ecosystems of the Tibetan Plateau, a region that is extremely sensitive to climate change. Methods Here, we examined the relationship between DON and climate, plant, and soil attributes along a precipitation gradient in five alpine ecosystems (alpine wetland, alpine meadow, alpine shrub, alpine steppe, and alpine desert) across 20 sites that were up to 4000 km apart on the Tibetan Plateau. Results Results showed that soil DON concentration varied significantly across these alpine ecosystems, and had a positive relationship with mean annual precipitation. Belowground biomass, soil moisture, micro biomass carbon (MBC), and soil total phosphorus (TP) explained 84% of the variation in DON concentrations. The percentage of DON in soil total dissolved N (TDN) varied with vegetation type, with the lowest percentage observed in the alpine meadow (52%) and the highest in the alpine desert (77%), indicating the slow turnover of DON into inorganic N in systems with low litter input and microbial activity. Conclusions Precipitation and plant biomass input determine the concentration and turnover of soil DON on the Tibetan Plateau. A warmer and wetter climate that has been predicted for the Tibetan grasslands may lead to a larger and more active DON pool.
英文关键词	Soil inorganic N DOC DON Biomass Alpine grassland
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000545900900001
WOS关键词	MICROBIAL BIOMASS ; GRASSLAND ; DYNAMICS ; CARBON ; PHOSPHORUS ; PLANTS ; ACID ; DON ; MICROORGANISMS ; STOICHIOMETRY
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
来源机构	中国科学院青藏高原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328076
作者单位	[Jiang, Lili; Wang, Shiping; Meng, Fandong; Li, Yaoming] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China; [Zhang, Zhenhua; Luo, Caiyun] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Peoples R China; [Pang, Zhe; Rui, Yichao; Wang, Yanfen] Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China; [Wang, Changshun] Hulunbuir Coll, Sch Agr & Forest, Hulunbuir 021008, Inner Mongolia, Peoples R China; [Lan, Zhichun] Nanchang Univ, Jiangxi Prov Key Lab Watershed Ecosyst Change & B, Ctr Watershed Ecol, Inst Life Sci, Nanchang 330031, Jiangxi, Peoples R China; [Lan, Zhichun] Nanchang Univ, Sch Life Sci, Nanchang 330031, Jiangxi, Peoples R China; [Zhou, Xiaoqi] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China; [Jones, Davey L.] Bangor Univ, Sch Environm Nat Resources & Geog, Bangor LL57 2UW, Gwynedd, Wales; [Rui, Yichao] Univ Wisconsin, Dept Soil Sci, Madison, WI 53706 USA
推荐引用方式 GB/T 7714	Jiang, Lili,Wang, Shiping,Pang, Zhe,et al. Abiotic and biotic controls of soil dissolved organic nitrogen along a precipitation gradient on the Tibetan plateau[J]. 中国科学院青藏高原研究所.
APA	Jiang, Lili.,Wang, Shiping.,Pang, Zhe.,Wang, Changshun.,Meng, Fandong.,...&Wang, Yanfen.
MLA	Jiang, Lili,et al."Abiotic and biotic controls of soil dissolved organic nitrogen along a precipitation gradient on the Tibetan plateau".PLANT AND SOIL