Productivity depends more on the rate than the frequency of N addition in a temperate grassland

doi:10.1038/srep12558

	Productivity depends more on the rate than the frequency of N addition in a temperate grassland
	Lu, Xiaotao 3; Isbell, Forest 4; Feng, Jinchao 1,2; Zhang, Yunhai 2; Han, Xingguo 2,3
刊名	SCIENTIFIC REPORTS
	2015-07-28
卷号	5
ISSN号	2045-2322
DOI	10.1038/srep12558
英文摘要	Nitrogen (N) is a key limiting resource for aboveground net primary productivity (ANPP) in diverse terrestrial ecosystems. The relative roles of the rate and frequency (additions yr(-1)) of N application in stimulating ANPP at both the community-and species-levels are largely unknown. By independently manipulating the rate and frequency of N input, with nine rates (from 0 to 50 g N m(-2) year(-1)) crossed with two frequencies (twice year(-1) or monthly) in a temperate steppe of northern China across 2008-2013, we found that N addition increased community ANPP, and had positive, negative, or neutral effects for individual species. There were similar ANPP responses at the community-or species-level when a particular annual amount of N was added either twice year(-1) or monthly. The community ANPP was less sensitive to soil ammonium at lower frequency of N addition. ANPP responses to N addition were positively correlated with annual precipitation. Our results suggest that, over a five-year period, there will be similar ANPP responses to a given annual N input that occurs either frequently in small amounts, as from N deposition, or that occur infrequently in larger amounts, as from application of N fertilizers.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000358579600002
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122125]
专题	中国科学院沈阳应用生态研究所
通讯作者	Zhang, Yunhai
作者单位	1.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 4.Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA
推荐引用方式 GB/T 7714	Lu, Xiaotao,Isbell, Forest,Feng, Jinchao,et al. Productivity depends more on the rate than the frequency of N addition in a temperate grassland[J]. SCIENTIFIC REPORTS,2015,5.
APA	Lu, Xiaotao,Isbell, Forest,Feng, Jinchao,Zhang, Yunhai,&Han, Xingguo.(2015).Productivity depends more on the rate than the frequency of N addition in a temperate grassland.SCIENTIFIC REPORTS,5.
MLA	Lu, Xiaotao,et al."Productivity depends more on the rate than the frequency of N addition in a temperate grassland".SCIENTIFIC REPORTS 5(2015).