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250508s2025 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.70193
|2 doi
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|a pubmed25n1386.xml
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|a (NLM)40269476
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Liang, Guopeng
|e verfasserin
|4 aut
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|a Alleviating Nitrogen and Phosphorus Limitation Does Not Amplify Potassium-Induced Increase in Terrestrial Biomass
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|c 2025
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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 24.04.2025
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|a Date Revised 26.04.2025
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|a published: Print
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|a Citation Status MEDLINE
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| 520 |
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|a © 2025 The Author(s). Global Change Biology published by John Wiley & Sons Ltd.
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|a Potassium (K) is the second most abundant nutrient element in plants after nitrogen (N), and has been shown to limit aboveground production in some contexts. However, the role of N and phosphorus (P) availability in mediating K limitation in terrestrial production remains poorly understood; and it is unknown whether K also limits belowground carbon (C) stocks, which contain at least three times more C than those aboveground stocks. By synthesizing 779 global paired observations (528, 125, and 126 for aboveground productivity, root biomass, and soil organic C [SOC], respectively), we found that K addition significantly increased aboveground production and SOC by 8% and 5%, respectively, but did not significantly affect root biomass (+9%). Moreover, enhanced N and/or P availability (through N and P addition) did not further amplify the positive effect of K on aboveground productivity. In other words, K had a positive effect on aboveground productivity only when N and/or P were limiting, indicating that K could somehow substitute for N or P when they were limiting. Climate variables mostly explained the variations in K effects; specifically, stronger positive responses of aboveground productivity and SOC to K were found in regions with high mean annual temperature and wetness. Our results suggest that K addition enhances C sequestration by increasing both aboveground productivity and SOC, contributing to climate mitigation, but the positive effects of K on terrestrial C stocks are not further amplified when N and P limitations are alleviated
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|a Journal Article
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|a nutrient limitation
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|a plant productivity
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|a potassium
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|a root biomass
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| 650 |
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|a soil organic carbon
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|a terrestrial ecosystems
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|a Phosphorus
|2 NLM
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|a 27YLU75U4W
|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 Potassium
|2 NLM
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| 650 |
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|a RWP5GA015D
|2 NLM
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| 650 |
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|a Soil
|2 NLM
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| 650 |
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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| 700 |
1 |
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|a Sun, Pengyan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Waring, Bonnie G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fu, Zheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Reich, Peter B
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 31(2025), 4 vom: 04. Apr., Seite e70193
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnas
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| 773 |
1 |
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|g volume:31
|g year:2025
|g number:4
|g day:04
|g month:04
|g pages:e70193
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|u http://dx.doi.org/10.1111/gcb.70193
|3 Volltext
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