Leaf P increase outpaces leaf N in an Inner Mongolia grassland over 27 years

doi:10.1098/rsbl.2014.0981

NWIPB OpenIR

	Leaf P increase outpaces leaf N in an Inner Mongolia grassland over 27 years
	Mi, Zhaorong 1,5; Huang, Yuanyuan 2,3; Gan, Huijie 2,3; Zhou, Wenjia 2,3; Flynn, Dan F. B.1,4; He, Jin-Sheng 1,2,3
	2015
发表期刊	BIOLOGY LETTERS
卷号	11 期号:1
文章类型	Article
摘要	The dynamics of leaf nitrogen (N) and phosphorus (P) have been intensively explored in short-term experiments, but rarely at longer timescales. Here, we investigated leaf N: P stoichiometry over a 27-year interval in an Inner Mongolia grassland by comparing leaf N: P concentration of 2006 with that of 1979. Across 80 species, both leaf N and P increased, but the increase in leaf N lagged behind that of leaf P, leading to a significant decrease in the N: P ratio. These changes in leaf N: P stoichiometry varied among functional groups. For leaf N, grasses increased, woody species tended to increase, whereas forbs showed no change. Unlike leaf N, leaf P of grasses and forbs increased, whereas woody species showed no change. Such changes may reflect N deposition and P release induced by soil acidification over the past decades. The interannual effect of precipitation may somewhat have reduced the soil available N, leading to the more modest increase of leaf N than of leaf P. Thus, leaf N: P stoichiometry significantly responded to long-term environmental changes in this temperate steppe, but different functional groups responded differently. Our results indicate that conclusions of plant stoichiometry under short-term N fertilization should be treated with caution when extrapolating to longer timescales.
关键词	n : p Stoichiometry n Deposition Soil Acidification Chinese Grassland
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1098/rsbl.2014.0981
关键词[WOS]	ECOSYSTEM STRUCTURE ; TERRESTRIAL PLANTS ; NITROGEN ; STOICHIOMETRY ; STEPPE ; PRODUCTIVITY ; NUTRIENTS ; CARBON
收录类别	SCI
语种	英语
项目资助者	National Basic Research Program of China(2014CB954004) ; National Natural Science Foundation of China(31025005 ; 31321061)
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Biology ; Ecology ; Evolutionary Biology
WOS记录号	WOS:000370669200016
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5780
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China 2.Peking Univ, Minist Educ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 3.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China 4.Arnold Arboretum Harvard Univ, Boston, MA 02131 USA 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Mi, Zhaorong,Huang, Yuanyuan,Gan, Huijie,et al. Leaf P increase outpaces leaf N in an Inner Mongolia grassland over 27 years[J]. BIOLOGY LETTERS,2015,11(1).
APA	Mi, Zhaorong,Huang, Yuanyuan,Gan, Huijie,Zhou, Wenjia,Flynn, Dan F. B.,&He, Jin-Sheng.(2015).Leaf P increase outpaces leaf N in an Inner Mongolia grassland over 27 years.BIOLOGY LETTERS,11(1).
MLA	Mi, Zhaorong,et al."Leaf P increase outpaces leaf N in an Inner Mongolia grassland over 27 years".BIOLOGY LETTERS 11.1(2015).

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