Warming and Nitrogen Addition Increase Litter Decomposition in a Temperate Meadow Ecosystem

doi:10.1371/journal.pone.0116013

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 旱作节水研究室

	Warming and Nitrogen Addition Increase Litter Decomposition in a Temperate Meadow Ecosystem
	Gong, Shiwei 1; Guo, Rui 2; Zhang, Tao 1; Guo, Jixun 1
刊名	PLOS ONE
	2015
卷号	10 期号:3 页码:-
ISSN号	1932-6203
DOI	10.1371/journal.pone.0116013
通讯作者	Gong, Shiwei
英文摘要	BackgroundLitter decomposition greatly influences soil structure, nutrient content and carbon sequestration, but how litter decomposition is affected by climate change is still not well understood.Methodology/Principal FindingsA field experiment with increased temperature and nitrogen (N) addition was established in April 2007 to examine the effects of experimental warming, N addition and their interaction on litter decomposition in a temperate meadow steppe in northeastern China. Warming, N addition and warming plus N addition reduced the residual mass of L. chinensis litter by 3.78%, 7.51% and 4.53%, respectively, in 2008 and 2009, and by 4.73%, 24.08% and 16.1%, respectively, in 2010. Warming, N addition and warming plus N addition had no effect on the decomposition of P. communis litter in 2008 or 2009, but reduced the residual litter mass by 5.58%, 15.53% and 5.17%, respectively, in 2010. Warming and N addition reduced the cellulose percentage of L. chinensis and P. communis, specifically in 2010. The lignin percentage of L. chinensis and P. communis was reduced by warming but increased by N addition. The C, N and P contents of L. chinensis and P. communis litter increased with time. Warming and N addition reduced the C content and C: N ratios of L. chinensisand P. communis litter, but increased the N and P contents. Significant interactive effects of warming and N addition on litter decomposition were observed (P<0.01).Conclusion/SignificanceThe litter decomposition rate was highly correlated with soil temperature, soil water content and litter quality. Warming and N addition significantly impacted the litter decomposition rate in the Songnen meadow ecosystem, and the effects of warming and N addition on litter decomposition were also influenced by the quality of litter. These results highlight how climate change could alter grassland ecosystem carbon, nitrogen and phosphorus contents in soil by influencing litter decomposition.
学科主题	Multidisciplinary Sciences
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000351183500005
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19760]
专题	农业环境与可持续发展研究所_旱作节水研究室
作者单位	1.NE Normal Univ, Minist Educ, Inst Grassland Sci, Key Lab Vegetat Ecol, Changchun 130024, Peoples R China 2.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Key Lab Dryland Agr, Minist Agr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Gong, Shiwei,Guo, Rui,Zhang, Tao,et al. Warming and Nitrogen Addition Increase Litter Decomposition in a Temperate Meadow Ecosystem[J]. PLOS ONE,2015,10(3):-.
APA	Gong, Shiwei,Guo, Rui,Zhang, Tao,&Guo, Jixun.(2015).Warming and Nitrogen Addition Increase Litter Decomposition in a Temperate Meadow Ecosystem.PLOS ONE,10(3),-.
MLA	Gong, Shiwei,et al."Warming and Nitrogen Addition Increase Litter Decomposition in a Temperate Meadow Ecosystem".PLOS ONE 10.3(2015):-.