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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.12274
|2 doi
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|a pubmed25n0760.xml
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|a (DE-627)NLM227994299
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|a (NLM)23729165
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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 Chen, Huaihai
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Soil nitrous oxide emissions following crop residue addition
|b a meta-analysis
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1 |
|c 2013
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| 336 |
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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 18.03.2014
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|a Date Revised 16.11.2017
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2013 John Wiley & Sons Ltd.
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|a Annual production of crop residues has reached nearly 4 billion metric tons globally. Retention of this large amount of residues on agricultural land can be beneficial to soil C sequestration. Such potential impacts, however, may be offset if residue retention substantially increases soil emissions of N(2)O, a potent greenhouse gas and ozone depletion substance. Residue effects on soil N(2)O emissions have gained considerable attention since early 1990s; yet, it is still a great challenge to predict the magnitude and direction of soil N(2)O emissions following residue amendment. Here, we used a meta-analysis to assess residue impacts on soil N(2)O emissions in relation to soil and residue attributes, i.e., soil pH, soil texture, soil water content, residue C and N input, and residue C : N ratio. Residue effects were negatively associated with C : N ratios, but generally residue amendment could not reduce soil N(2)O emissions, even for C : N ratios well above ca. 30, the threshold for net N immobilization. Residue effects were also comparable to, if not greater than, those of synthetic N fertilizers. In addition, residue effects on soil N(2)O emissions were positively related to the amounts of residue C input as well as residue effects on soil CO(2) respiration. Furthermore, most significant and stimulatory effects occurred at 60-90% soil water-filled pore space and soil pH 7.1-7.8. Stimulatory effects were also present for all soil textures except sand or clay content ≤10%. However, inhibitory effects were found for soils with >90% water-filled pore space. Altogether, our meta-analysis suggests that crop residues played roles beyond N supply for N(2)O production. Perhaps, by stimulating microbial respiration, crop residues enhanced oxygen depletion and therefore promoted anaerobic conditions for denitrification and N(2)O production. Our meta-analysis highlights the necessity to connect the quantity and quality of crop residues with soil properties for predicting soil N(2)O emissions
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|a Journal Article
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|a Meta-Analysis
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|a Research Support, Non-U.S. Gov't
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4 |
|a Research Support, U.S. Gov't, Non-P.H.S.
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4 |
|a C : N ratio
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4 |
|a arable soil
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4 |
|a crop residue
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| 650 |
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4 |
|a meta-analysis
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| 650 |
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4 |
|a nitrous oxide
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| 650 |
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4 |
|a soil CO2 respiration
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| 650 |
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4 |
|a soil pH
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| 650 |
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4 |
|a soil texture
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| 650 |
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4 |
|a water-filled pore space
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| 650 |
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7 |
|a Air Pollutants
|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 Soil
|2 NLM
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| 650 |
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7 |
|a Carbon
|2 NLM
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| 650 |
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7 |
|a 7440-44-0
|2 NLM
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| 650 |
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|a Nitrous Oxide
|2 NLM
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| 650 |
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7 |
|a K50XQU1029
|2 NLM
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| 650 |
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7 |
|a Nitrogen
|2 NLM
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| 650 |
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7 |
|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Li, Xuechao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hu, Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shi, Wei
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Global change biology
|d 1999
|g 19(2013), 10 vom: 04. Okt., Seite 2956-64
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:19
|g year:2013
|g number:10
|g day:04
|g month:10
|g pages:2956-64
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| 856 |
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|u http://dx.doi.org/10.1111/gcb.12274
|3 Volltext
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|a GBV_ILN_350
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|a AR
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|d 19
|j 2013
|e 10
|b 04
|c 10
|h 2956-64
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