globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-014-0004-0
Scopus记录号: 2-s2.0-84918807173
论文题名:
Chronic nitrogen additions suppress decomposition and sequester soil carbon in temperate forests
作者: Frey S.D.; Ollinger S.; Nadelhoffer K.; Bowden R.; Brzostek E.; Burton A.; Caldwell B.A.; Crow S.; Goodale C.L.; Grandy A.S.; Finzi A.; Kramer M.G.; Lajtha K.; LeMoine J.; Martin M.; McDowell W.H.; Minocha R.; Sadowsky J.J.; Templer P.H.; Wickings K.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 121, 期:2
起始页码: 305
结束页码: 316
语种: 英语
英文关键词: Nitrogen deposition ; Soil carbon ; Temperate forest ; Terrestrial carbon sink
Scopus关键词: Fungi
英文摘要: The terrestrial biosphere sequesters up to a third of annual anthropogenic carbon dioxide emissions, offsetting a substantial portion of greenhouse gas forcing of the climate system. Although a number of factors are responsible for this terrestrial carbon sink, atmospheric nitrogen deposition contributes by enhancing tree productivity and promoting carbon storage in tree biomass. Forest soils also represent an important, but understudied carbon sink. Here, we examine the contribution of trees versus soil to total ecosystem carbon storage in a temperate forest and investigate the mechanisms by which soils accumulate carbon in response to two decades of elevated nitrogen inputs. We find that nitrogen-induced soil carbon accumulation is of equal or greater magnitude to carbon stored in trees, with the degree of response being dependent on stand type (hardwood versus pine) and level of N addition. Nitrogen enrichment resulted in a shift in organic matter chemistry and the microbial community such that unfertilized soils had a higher relative abundance of fungi and lipid, phenolic, and N-bearing compounds; whereas, N-amended plots were associated with reduced fungal biomass and activity and higher rates of lignin accumulation. We conclude that soil carbon accumulation in response to N enrichment was largely due to a suppression of organic matter decomposition rather than enhanced carbon inputs to soil via litter fall and root production. © 2014, Springer International Publishing Switzerland.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83624
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH, United States; Earth Systems Research Center, University of New Hampshire, Durham, NH, United States; Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, United States; Department of Environmental Science, Allegheny College, Meadville, PA, United States; Department of Geography, Indiana University, Bloomington, IN, United States; School of Forest Resources and Environmental Science, Michigan Technological University, Houghton, MI, United States; Department of Forest Science, Oregon State University, Corvallis, OR, United States; Department of Natural Resources and Environmental Management, University of Hawai’i Mānoa, Honolulu, HI, United States; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, United States; Department of Biology, Boston University, Boston, MA, United States; Soil and Water Science Department, University of Florida, Gainesville, FL, United States; USDA Forest Service, Northern Research Station, Durham, NH, United States

Recommended Citation:
Frey S.D.,Ollinger S.,Nadelhoffer K.,et al. Chronic nitrogen additions suppress decomposition and sequester soil carbon in temperate forests[J]. Biogeochemistry,2014-01-01,121(2)
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