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

	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
刊名	biology letters
	2015
卷号	11 期号:1
关键词	N : P stoichiometry N deposition soil acidification Chinese grassland
英文摘要	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.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	biology ; ecology ; evolutionary biology
研究领域[WOS]	life sciences & biomedicine - other topics ; environmental sciences & ecology ; evolutionary biology
关键词[WOS]	ecosystem structure ; terrestrial plants ; nitrogen ; stoichiometry ; steppe ; productivity ; nutrients ; carbon
收录类别	SCI
语种	英语
WOS记录号	WOS:000370669200016
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/5780]
专题	西北高原生物研究所_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).