Vegetation and Soil N-15 Natural Abundance in Alpine Grasslands on the   Tibetan Plateau: Patterns and Implications

doi:10.1007/s10021-013-9664-1

CORC > 北京大学 > 城市与环境学院

	Vegetation and Soil N-15 Natural Abundance in Alpine Grasslands on the Tibetan Plateau: Patterns and Implications
	Yang, Yuanhe ; Ji, Chengjun ; Robinson, David ; Zhu, Biao ; Fang, Huajun ; Shen, Haihua ; Fang, Jingyun
刊名	ecosystems
	2013
关键词	carbon:nitrogen ratio climate isotope nitrogen cycle soil delta N-15 soil texture vegetation delta N-15 FOLIAR NITROGEN ISOTOPES PRECIPITATION GRADIENT GLOBAL PATTERNS RAIN-FOREST CARBON AVAILABILITY PLANT DELTA-N-15 DYNAMICS CHINA
DOI	10.1007/s10021-013-9664-1
英文摘要	The natural abundance of nitrogen (N) stable isotopes (delta N-15) has the potential to enhance our understanding of the ecosystem N cycle at large spatial scales. However, vegetation and soil delta N-15 patterns along climatic and edaphic gradients have not yet been fully understood, particularly for high-altitude ecosystems. Here we determined vegetation and soil delta N-15 in alpine grasslands on the Tibetan Plateau by conducting four consecutive regional surveys during 2001-2004, and then examined their relationships with both climatic and edaphic variables. Our results showed that both vegetation and soil N in Tibetan alpine grasslands were more N-15-enriched than global averages. Vegetation delta N-15 did not exhibit any significant trend along the temperature gradient, but decreased significantly with an increase in precipitation amount. In contrast, soil delta N-15 did not vary with either mean annual temperature or precipitation. Our results also indicated that soil delta N-15 exhibited a slight increase with clay content, but decreased with soil carbon:nitrogen ratio. A general linear model analysis revealed that variations in vegetation delta N-15 were dominantly determined by climatic variables, whereas soil delta N-15 was related to edaphic variables. These results provide clues for potential climatic and edaphic regulations on ecosystem N cycle in these high-altitude regions.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000323246000007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Ecology; SCI(E); 2; ARTICLE; 6; 1013-1024; 16
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/220959]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Yang, Yuanhe,Ji, Chengjun,Robinson, David,et al. Vegetation and Soil N-15 Natural Abundance in Alpine Grasslands on the Tibetan Plateau: Patterns and Implications[J]. ecosystems,2013.
APA	Yang, Yuanhe.,Ji, Chengjun.,Robinson, David.,Zhu, Biao.,Fang, Huajun.,...&Fang, Jingyun.(2013).Vegetation and Soil N-15 Natural Abundance in Alpine Grasslands on the Tibetan Plateau: Patterns and Implications.ecosystems.
MLA	Yang, Yuanhe,et al."Vegetation and Soil N-15 Natural Abundance in Alpine Grasslands on the Tibetan Plateau: Patterns and Implications".ecosystems (2013).