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

doi:10.1007/s10021-013-9664-1

	Vegetation and Soil N-15 Natural Abundance in Alpine Grasslands on the Tibetan Plateau: Patterns and Implications
	Yang, Yuanhe1,2 ; Ji, Chengjun 1,2; Robinson, David 3; Zhu, Biao 4; Fang, Huajun 5; Shen, Haihua ; Fang, Jingyun1,2
	2013
发表期刊	ECOSYSTEMS
ISSN	1432-9840
卷号	16 期号:6 页码:1013-1024
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.
关键词	carbon:nitrogen ratio climate isotope nitrogen cycle soil delta N-15 soil texture vegetation delta N-15
学科领域	Ecology
DOI	10.1007/s10021-013-9664-1
收录类别	SCI
语种	英语
WOS关键词	FOLIAR NITROGEN ISOTOPES ; PRECIPITATION GRADIENT ; MYCORRHIZAL FUNGI ; GLOBAL PATTERNS ; RAIN-FOREST ; CARBON ; DELTA-N-15 ; PLANT ; AVAILABILITY ; DYNAMICS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000323246000007
出版者	SPRINGER
文献子类	Article
出版地	NEW YORK
EISSN	1435-0629
资助机构	Institute of Botany, Chinese Academy of Sciences(Chinese Academy of Sciences) ; National Basic Research Program of China on Global Change(National Basic Research Program of China) ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Strategic Priority Research Program of the Chinese Academy of Sciences(Chinese Academy of Sciences)
作者邮箱	Robinson, David/C-2112-2009 ; Yang, Yuanhe/D-1448-2011 ; Zhu, Biao/F-8712-2010
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28190
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Peking Univ, Minist Educ, Dept Ecol, Beijing 100871, Peoples R China 3.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China 4.Univ Aberdeen, Inst Biol & Environm Sci, Sch Biol Sci, Aberdeen AB24 3UU, Scotland 5.Cornell Univ, Dept Hort, Ithaca, NY 14853 USA 6.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
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,2013,16(6):1013-1024.
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,16(6),1013-1024.
MLA	Yang, Yuanhe,et al."Vegetation and Soil N-15 Natural Abundance in Alpine Grasslands on the Tibetan Plateau: Patterns and Implications".ECOSYSTEMS 16.6(2013):1013-1024.

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