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240924s2024 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.17516
|2 doi
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|a pubmed24n1546.xml
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|a (DE-627)NLM377985961
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|a (NLM)39311643
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Richy, Etienne
|e verfasserin
|4 aut
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|a Phosphorus limitation promotes soil carbon storage in a boreal forest exposed to long-term nitrogen fertilization
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 23.09.2024
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|a Date Revised 23.09.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a © 2024 The Author(s). Global Change Biology published by John Wiley & Sons Ltd.
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|a Forests play a crucial role in global carbon cycling by absorbing and storing significant amounts of atmospheric carbon dioxide. Although boreal forests contribute to approximately 45% of the total forest carbon sink, tree growth and soil carbon sequestration are constrained by nutrient availability. Here, we examine if long-term nutrient input enhances tree productivity and whether this leads to carbon storage or whether stimulated microbial decomposition of organic matter limits soil carbon accumulation. Over six decades, nitrogen, phosphorus, and calcium were supplied to a Pinus sylvestris-dominated boreal forest. We found that nitrogen fertilization alone or together with calcium and/or phosphorus increased tree biomass production by 50% and soil carbon sequestration by 65% compared to unfertilized plots. However, the nonlinear relationship observed between tree productivity and soil carbon stock across treatments suggests microbial regulation. When phosphorus was co-applied with nitrogen, it acidified the soil, increased fungal biomass, altered microbial community composition, and enhanced biopolymer degradation capabilities. While no evidence of competition between ectomycorrhizal and saprotrophic fungi has been observed, key functional groups with the potential to reduce carbon stocks were identified. In contrast, when nitrogen was added without phosphorus, it increased soil carbon sequestration because microbial activity was likely limited by phosphorus availability. In conclusion, the addition of nitrogen to boreal forests may contribute to global warming mitigation, but this effect is context dependent
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|a Journal Article
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|a boreal forest ecosystem
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|a fertilization
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|a microbial community composition
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|a microbial degradation
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|a nutrient limitation
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|a soil carbon storage
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|a structural equation modeling
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|a tree woody biomass
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|a Phosphorus
|2 NLM
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|a 27YLU75U4W
|2 NLM
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|a Soil
|2 NLM
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 650 |
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|a Fertilizers
|2 NLM
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| 650 |
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|a Carbon
|2 NLM
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| 650 |
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|a 7440-44-0
|2 NLM
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| 650 |
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|a Calcium
|2 NLM
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| 650 |
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|a SY7Q814VUP
|2 NLM
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| 700 |
1 |
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|a Fort, Tania
|e verfasserin
|4 aut
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1 |
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|a Odriozola, Inaki
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kohout, Petr
|e verfasserin
|4 aut
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|a Barbi, Florian
|e verfasserin
|4 aut
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|a Martinovic, Tijana
|e verfasserin
|4 aut
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|a Tupek, Boris
|e verfasserin
|4 aut
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|a Adamczyk, Bartosz
|e verfasserin
|4 aut
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|a Lehtonen, Aleksi
|e verfasserin
|4 aut
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|a Mäkipää, Raisa
|e verfasserin
|4 aut
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| 700 |
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|a Baldrian, Petr
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Global change biology
|d 1999
|g 30(2024), 9 vom: 23. Sept., Seite e17516
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
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|g volume:30
|g year:2024
|g number:9
|g day:23
|g month:09
|g pages:e17516
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|u http://dx.doi.org/10.1111/gcb.17516
|3 Volltext
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