title: Stimulation of terrestrial ecosystem carbon storage by nitrogen addition: a meta-analysis.
abstract: Elevated nitrogen (N) deposition alters the terrestrial carbon (C) cycle, which is likely to feed back to further climate change. However, how the overall terrestrial ecosystem C pools and fluxes respond to N addition remains unclear. By synthesizing data from multiple terrestrial ecosystems, we quantified the response of C pools and fluxes to experimental N addition using a comprehensive meta-analysis method. Our results showed that N addition significantly stimulated soil total C storage by 5.82% ([2.47%, 9.27%], 95% CI, the same below) and increased the C contents of the above- and below-ground parts of plants by 25.65% [11.07%, 42.12%] and 15.93% [6.80%, 25.85%], respectively. Furthermore, N addition significantly increased aboveground net primary production by 52.38% [40.58%, 65.19%] and litterfall by 14.67% [9.24%, 20.38%] at a global scale. However, the C influx from the plant litter to the soil through litter decomposition and the efflux from the soil due to microbial respiration and soil respiration showed insignificant responses to N addition. Overall, our meta-analysis suggested that N addition will increase soil C storage and plant C in both above- and below-ground parts, indicating that terrestrial ecosystems might act to strengthen as a C sink under increasing N deposition.
authors.affiliation: Long-term Research Station of Alpine Forest Ecosystem, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, Chengdu 611130, China.|Department of Biological Science, Institute of Environment Sciences, University of Quebec at Montreal, Montreal, Quebec, H3C 3P8, Canada.
authors.forename: Kai
authors.initials: K
authors.lastname: Yue
authors.affiliation: Long-term Research Station of Alpine Forest Ecosystem, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Peng
authors.affiliation: Department of Biological Science, Institute of Environment Sciences, University of Quebec at Montreal, Montreal, Quebec, H3C 3P8, Canada.|Laboratory for Ecological Forecasting and Global Change, College of Forestry, Northwest A &F University, Yangling 712100, China.
authors.forename: Changhui
authors.initials: C
authors.lastname: Peng
authors.affiliation: Long-term Research Station of Alpine Forest Ecosystem, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Wanqin
authors.initials: W
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Geohazard Prevention and Geoenvironment Proctection, College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Peng
authors.affiliation: Long-term Research Station of Alpine Forest Ecosystem, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Fuzhong
authors.initials: F
authors.lastname: Wu
mesh_terms: D002244:Carbon; D057486:Carbon Cycle; D017753:Ecosystem; D009584:Nitrogen; D012987:Soil / Q000737:chemistry
chemical_list: D012987:Soil; D002244:Carbon; D009584:Nitrogen
references.citation: Oecologia. 2006 Nov;150(1):97-107
references.pmid: 16917779
references.citation: New Phytol. 2007;173(3):463-80
references.pmid: 17244042
references.citation: Nature. 2007 Jun 14;447(7146):781-2
references.pmid: 17568730
references.citation: Ecol Lett. 2007 Dec;10(12):1135-42
references.pmid: 17922835
references.citation: Nature. 2007 Nov 8;450(7167):277-80
references.pmid: 17994095
references.citation: Nature. 2007 Nov 22;450(7169):537-40
references.pmid: 18033294
references.citation: Ecol Lett. 2008 May;11(5):516-31
references.pmid: 18279352
references.citation: Ecology. 2008 Feb;89(2):371-9
references.pmid: 18409427
references.citation: Science. 2008 May 16;320(5878):889-92
references.pmid: 18487183
references.citation: Ecol Lett. 2008 Oct;11(10):1111-20
references.pmid: 18673384
references.citation: New Phytol. 2008 Jul;179(2):428-39
references.pmid: 19086179
references.citation: Ecol Lett. 2009 Oct;12(10):1103-17
references.pmid: 19694782
references.citation: Ecol Appl. 2010 Jan;20(1):30-59
references.pmid: 20349829
references.citation: Ecol Lett. 2010 Jul;13(7):819-28
references.pmid: 20482580
references.citation: New Phytol. 2011 Mar;189(4):1040-50
references.pmid: 21138438
references.citation: New Phytol. 2011 Jul;191(2):496-507
references.pmid: 21434930
references.citation: Ecology. 2012 Sep;93(9):2030-6
references.pmid: 23094375
references.citation: Oecologia. 2013 Oct;173(2):615-24
references.pmid: 23504175
references.citation: Ecology. 2013 Mar;94(3):726-38
references.pmid: 23687898
references.citation: Glob Chang Biol. 2013 Dec;19(12):3848-57
references.pmid: 23907927
references.citation: Glob Chang Biol. 2014 Jul;20(7):2332-43
references.pmid: 24323545
references.citation: Glob Chang Biol. 2014 Nov;20(11):3544-56
references.pmid: 24357470
references.citation: Biol Rev Camb Philos Soc. 2015 Aug;90(3):669-88
references.pmid: 24935280
references.citation: Oecologia. 1990 Oct;84(3):351-358
references.pmid: 28313024