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240530s2024 xx |||||o 00| ||eng c |
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|a 10.1111/nph.19877
|2 doi
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|a eng
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|a Wang, Bin
|e verfasserin
|4 aut
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|a Elevated aerosol enhances plant water-use efficiency by increasing carbon uptake while reducing water loss
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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
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|2 rdacarrier
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|a Date Completed 20.06.2024
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|a Date Revised 20.07.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2024 The Authors. New Phytologist © 2024 New Phytologist Foundation.
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|a Aerosols could significantly influence ecosystem carbon and water fluxes, potentially altering their interconnected dynamics, typically characterized by water-use efficiency (WUE). However, our understanding of the underlying ecophysiological mechanisms remains limited due to insufficient field observations. We conducted 4-yr measurements of leaf photosynthesis and transpiration, as well as 3-yr measurements of stem growth (SG) and sap flow of poplar trees exposed to natural aerosol fluctuation, to elucidate aerosol's impact on plant WUE. We found that aerosol improved sun leaf WUE mainly because a sharp decline in photosynthetically active radiation (PAR) inhibited its transpiration, while photosynthesis was less affected, as the negative effect induced by declined PAR was offset by the positive effect induced by low leaf vapor pressure deficit (VPDleaf). Conversely, diffuse radiation fertilization (DRF) effect stimulated shade leaf photosynthesis with minimal impact on transpiration, leading to an improved WUE. The responses were further verified by a strong DRF on SG and a decrease in sap flow due to the suppresses in total radiation and VPD. Our field observations indicate that, contrary to the commonly assumed coupling response, carbon uptake and water use exhibited dissimilar reactions to aerosol pollution, ultimately enhancing WUE at the leaf and canopy level
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|a Journal Article
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|a aerosol
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|a photosynthesis
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|a sap flow
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|a stem growth
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|a transpiration
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|a water‐use efficiency
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|a Water
|2 NLM
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|a Aerosols
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|a Carbon
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|a 7440-44-0
|2 NLM
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| 700 |
1 |
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|a Wang, Zhenhua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Chengzhang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Xin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jia, Zhou
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Lingli
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 243(2024), 2 vom: 01. Juli, Seite 567-579
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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|g volume:243
|g year:2024
|g number:2
|g day:01
|g month:07
|g pages:567-579
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|u http://dx.doi.org/10.1111/nph.19877
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