DOI: 10.1007/s10533-015-0169-1
Scopus记录号: 2-s2.0-84958615921
论文题名: Elevated CO2 increased phosphorous loss from decomposing litter and soil organic matter at two FACE experiments with trees
作者: Hoosbeek M.R.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 127, 期: 1 起始页码: 89
结束页码: 97
语种: 英语
英文关键词: Elevated CO2
; FACE experiment
; Litter and soil stoichiometry
; Secondary forest growth
; Soil phosphorous
Scopus关键词: atmospheric chemistry
; biogeochemistry
; carbon dioxide enrichment
; carbon sequestration
; chemical weathering
; deciduous tree
; experimental study
; litter
; nutrient limitation
; nutrient uptake
; nutrient use efficiency
; phosphatase
; phosphorus
; secondary forest
; shrub
; soil organic matter
; stoichiometry
; terrestrial ecosystem
; Alnus glutinosa
; Betula pendula
; Fagus sylvatica
; Populus x canadensis
英文摘要: Sustained increased productivity of trees growing in elevated CO2 depends in part on their stoichiometric flexibility, i.e., increasing their nutrient use efficiency, or on increased nutrient uptake from the soil. Phosphorus (P) may be a nutrient as limiting as nitrogen (N) in terrestrial ecosystems and may play a key-process in global terrestrial C storage. For this study archived litter and soil samples of two free air CO2 enrichment (FACE) experiments were analyzed for C, N and P. Populus euramericana, nigra and alba and Betula pendula, Alnus glutinosa and Fagus sylvatica were grown in ambient and elevated CO2 at respectively the Euro- and BangorFACE experiments. At EuroFACE, aboveground litter accumulated in L, F and H layers, while at BangorFACE almost all aboveground litter was incorporated into the mineral soil due to bioturbation. At EuroFACE, more P was lost from the F and H litter layers due to trees growing in elevated CO2, while at BangorFACE more P was lost from the mineral soil. Results of this study imply that trees growing in elevated CO2 were P limited at both experiments. Therefore, with increasing atmospheric CO2, P may play a more pronounced role than previous thought in regulating secondary forest growth. Moreover, increased atmospheric CO2 and ample N may allow a larger pool of P to become available for uptake due to, for instance, increased phosphatase activity resulting in increased organic matter turnover and biogenic weathering. Therefore, it may be postulated that under non-N-limited conditions, e.g., during regrowth, under high N deposition or in systems with high N2-fixation, increased P availability and uptake may allow P-limited forests to sustain increased growth under increasing atmospheric CO2. © 2015, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83432
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 Soil Quality, Wageningen University, P.O. Box 47, Wageningen, Netherlands
Recommended Citation:
Hoosbeek M.R.. Elevated CO2 increased phosphorous loss from decomposing litter and soil organic matter at two FACE experiments with trees[J]. Biogeochemistry,2016-01-01,127(1)