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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.16603
|2 doi
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|a pubmed24n1172.xml
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|a (DE-627)NLM351716432
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|a (NLM)36660889
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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 Elrys, Ahmed S
|e verfasserin
|4 aut
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|a Global soil nitrogen cycle pattern and nitrogen enrichment effects
|b Tropical versus subtropical forests
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 07.03.2023
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|a Date Revised 26.05.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 John Wiley & Sons Ltd.
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|a Tropical and subtropical forest biomes are a main hotspot for the global nitrogen (N) cycle. Yet, our understanding of global soil N cycle patterns and drivers and their response to N deposition in these biomes remains elusive. By a meta-analysis of 2426-single and 161-paired observations from 89 published 15 N pool dilution and tracing studies, we found that gross N mineralization (GNM), immobilization of ammonium ( I NH 4 ) and nitrate ( I NO 3 ), and dissimilatory nitrate reduction to ammonium (DNRA) were significantly higher in tropical forests than in subtropical forests. Soil N cycle was conservative in tropical forests with ratios of gross nitrification (GN) to I NH 4 (GN/ I NH 4 ) and of soil nitrate to ammonium (NO3 - /NH4 + ) less than one, but was leaky in subtropical forests with GN/ I NH 4 and NO3 - /NH4 + higher than one. Soil NH4 + dynamics were mainly controlled by soil substrate (e.g., total N), but climatic factors (e.g., precipitation and/or temperature) were more important in controlling soil NO3 - dynamics. Soil texture played a role, as GNM and I NH 4 were positively correlated with silt and clay contents, while I NO 3 and DNRA were positively correlated with sand and clay contents, respectively. The soil N cycle was more sensitive to N deposition in tropical forests than in subtropical forests. Nitrogen deposition leads to a leaky N cycle in tropical forests, as evidenced by the increase in GN/ I NH 4 , NO3 - /NH4 + , and nitrous oxide emissions and the decrease in I NO 3 and DNRA, mainly due to the decrease in soil microbial biomass and pH. Dominant tree species can also influence soil N cycle pattern, which has changed from conservative in deciduous forests to leaky in coniferous forests. We provide global evidence that tropical, but not subtropical, forests are characterized by soil N dynamics sustaining N availability and that N deposition inhibits soil N retention and stimulates N losses in these biomes
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|a Meta-Analysis
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|a Journal Article
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|a global change
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|a leaky or conservative nitrogen cycle
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|a nitrogen cycle
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|a nitrogen deposition scenarios
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|a nitrogen loss
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|a tropical and subtropical forests
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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| 650 |
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|a Nitrates
|2 NLM
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| 650 |
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|a Soil
|2 NLM
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|a Clay
|2 NLM
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|a T1FAD4SS2M
|2 NLM
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|a Ammonium Compounds
|2 NLM
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|a Zhu, QiLin
|e verfasserin
|4 aut
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|a Jiang, Chunlan
|e verfasserin
|4 aut
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|a Liu, Juan
|e verfasserin
|4 aut
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|a Sobhy, Hamida H H
|e verfasserin
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|a Shen, Qunli
|e verfasserin
|4 aut
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|a Uwiragiye, Yves
|e verfasserin
|4 aut
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|a Wu, Yanzheng
|e verfasserin
|4 aut
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|a El-Tarabily, Khaled A
|e verfasserin
|4 aut
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|a Meng, Lei
|e verfasserin
|4 aut
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|a Müller, Christoph
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Jinbo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 29(2023), 7 vom: 21. Apr., Seite 1905-1921
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
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|g volume:29
|g year:2023
|g number:7
|g day:21
|g month:04
|g pages:1905-1921
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|u http://dx.doi.org/10.1111/gcb.16603
|3 Volltext
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