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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.16746
|2 doi
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|a pubmed24n1189.xml
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|a (DE-627)NLM356888258
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|a (NLM)37186143
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wang, Ze
|e verfasserin
|4 aut
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| 245 |
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|a Forms of nitrogen inputs regulate the intensity of soil acidification
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 15.06.2023
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|a Date Revised 31.08.2023
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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 Soil acidification induced by reactive nitrogen (N) inputs can alter the structure and function of terrestrial ecosystems. Because different N-transformation processes contribute to the production and consumption of H+ , the magnitude of acidification likely depends on the relative amounts of organic N (ON) and inorganic N (IN) inputs. However, few studies have explicitly measured the effects of N composition on soil acidification. In this study, we first conducted a meta-analysis to test the effects of ON or IN inputs on soil acidification across 53 studies in grasslands. We then compared soil acidification across five different ON:IN ratios and two input rates based on long-term field N addition experiments. The meta-analysis showed that ON had weaker effects on soil acidification than IN when the N addition rate was above 20 g N m-2 year-1 . The field experiment confirmed the findings from meta-analysis: N addition with proportions of ON ≥ 20% caused less soil acidification, especially at a high input rate (30 g N m-2 year-1 ). Structural equation model analysis showed that this result was largely due to a relatively low rate of H+ production from ON as NH3 volatilization and uptake of ON and NH4 + by the dominant grass species Leymus chinensis (which are both lower net contributors to H+ production) result in less NH4 + available for nitrification (which is a higher net contributor to H+ production). These results indicate that the evaluation of soil acidification induced by N inputs should consider N forms and manipulations of relative composition of N inputs may provide an effective approach to alleviate the N-induced soil acidification
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|a Meta-Analysis
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|a Journal Article
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|a exchangeable cations
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|a nitrogen addition rate
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|a nitrogen composition
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|a plant community
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|a soil buffering system
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|a soil pH
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|a Soil
|2 NLM
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| 650 |
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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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| 700 |
1 |
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|a Tao, Tingting
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Hu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Ji
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Small, Gaston E
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Johnson, David
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Jihui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yingjun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Qichao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Shengmin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Song, Yantao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kattge, Jens
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guo, Peng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sun, Xiao
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 29(2023), 14 vom: 11. Juli, Seite 4044-4055
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:29
|g year:2023
|g number:14
|g day:11
|g month:07
|g pages:4044-4055
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| 856 |
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|u http://dx.doi.org/10.1111/gcb.16746
|3 Volltext
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|a AR
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|d 29
|j 2023
|e 14
|b 11
|c 07
|h 4044-4055
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