Foliar N/P ratio and nutrient limitation to vegetation growth on Keerqin sandy grassland of North-east China

doi:10.1111/j.1365-2494.2011.00781.x

	Foliar N/P ratio and nutrient limitation to vegetation growth on Keerqin sandy grassland of North-east China
	Li, L. -J.1,2; Zeng, D. -H.2; Yu, Z. -Y.2; Fan, Z. -P.2; Mao, R.2; Peri, P. L.3
刊名	GRASS AND FORAGE SCIENCE
	2011-06-01
卷号	66 期号:2 页码:237-242
关键词	Biomass Partitioning Keerqin Sandy Lands Luxury Consumption n p Stoichiometry Nitrogen Limitation
ISSN号	0142-5242
DOI	10.1111/j.1365-2494.2011.00781.x
英文摘要	To examine whether the critical leaf N/P ratios (of 14, 16) are valid to test nutrient limitation in the context of semi-arid sandy grasslands, an experiment was conducted on a Keerqin sandy grassland in North-east China to investigate the responses of plant biomass and nutrient concentrations to fertilization. Plant biomass production and leaf nutrient concentrations were measured after five consecutive years of fertilization with N (20 g N m-2 year-1) and/or P (10 g P(2)O(5) m-2 year-1). Nitrogen fertilization increased the shoot biomass by twofold and consequently the shoot/root ratio, whereas P fertilization had little effect on either shoot biomass or shoot/root ratio. Leaf N/P ratio varied among species with an average of 5 center dot 6 in the control, while the mean leaf N/P ratio (7 center dot 5) under the N fertilization treatment remained below the threshold of 14. Our results suggest that the critical N/P ratio (14, 16) is not applicable as a test for nutrient limitations in the context of semi-arid, sandy grassland.
WOS研究方向	Agriculture
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000290172200008
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/121977]
专题	中国科学院沈阳应用生态研究所
通讯作者	Zeng, D. -H.
作者单位	1.Chinese Acad Sci, Key Lab Mollisols Agroecol, NE Inst Geog & Agroecol, Harbin, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, Shenyang 110016, Peoples R China 3.Univ Nacl Patagonia Austral UNPA, INTA EEA Santa Cruz, Consejo Nacl Invest Cient CONICET, RA-9400 Rio Gallegos, Santa Cruz, Argentina
推荐引用方式 GB/T 7714	Li, L. -J.,Zeng, D. -H.,Yu, Z. -Y.,et al. Foliar N/P ratio and nutrient limitation to vegetation growth on Keerqin sandy grassland of North-east China[J]. GRASS AND FORAGE SCIENCE,2011,66(2):237-242.
APA	Li, L. -J.,Zeng, D. -H.,Yu, Z. -Y.,Fan, Z. -P.,Mao, R.,&Peri, P. L..(2011).Foliar N/P ratio and nutrient limitation to vegetation growth on Keerqin sandy grassland of North-east China.GRASS AND FORAGE SCIENCE,66(2),237-242.
MLA	Li, L. -J.,et al."Foliar N/P ratio and nutrient limitation to vegetation growth on Keerqin sandy grassland of North-east China".GRASS AND FORAGE SCIENCE 66.2(2011):237-242.