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Article: Intermediate Aerosol Loading Enhances Photosynthetic Activity of Croplands

TitleIntermediate Aerosol Loading Enhances Photosynthetic Activity of Croplands
Authors
KeywordsAerosol loading
diffuse radiation
photosynthesis
relative humidity (RH)
solar-induced chlorophyll fluorescence (SIF)
Issue Date2021
PublisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007
Citation
Geophysical Research Letters, 2021, v. 48 n. 7, p. article no. e2020GL091893 How to Cite?
AbstractAerosols can affect crop photosynthesis by altering radiation and meteorological conditions. By combining field observations, mechanistic modeling, and satellite-retrieved solar-induced chlorophyll fluorescence (SIF), we assessed aerosols' impacts on crop photosynthesis from leaf to regional scale. We found that the initial increase in aerosol optical depth (AOD) enhanced photosynthesis of sun leaves, shade leaves, and canopy, which reached their maximum at AOD = 0.76, 1.13, and 0.93, respectively, and then decreased. Aerosol-induced changes in radiation regime and the concurrent high relative humidity led to such nonlinear responses. Similarly, the SIF of croplands in the North China Plain (NCP) also showed a bell-shaped response to aerosols. The optimal AOD level at which SIF reached the maximum value varied from 0.56 to 1.04, depending on the background meteorological conditions. Approximately 76%–90% of the NCP exceeded the optimal AOD level, suggesting that stringent aerosol pollution control could promote cropland productivity in this region.
Persistent Identifierhttp://hdl.handle.net/10722/300898
ISSN
2020 Impact Factor: 4.72
2020 SCImago Journal Rankings: 2.007

 

DC FieldValueLanguage
dc.contributor.authorWang, X-
dc.contributor.authorWang, C-
dc.contributor.authorWu, J-
dc.contributor.authorMiao, G-
dc.contributor.authorChen, M-
dc.contributor.authorChen, S-
dc.contributor.authorWang, S-
dc.contributor.authorGuo, Z-
dc.contributor.authorWang, Z-
dc.contributor.authorWang, B-
dc.contributor.authorLi, J-
dc.contributor.authorZhao, Y-
dc.contributor.authorWu, X-
dc.contributor.authorZhao, C-
dc.contributor.authorLin, W-
dc.contributor.authorZhang, Y-
dc.contributor.authorLiu, L-
dc.date.accessioned2021-07-06T03:11:45Z-
dc.date.available2021-07-06T03:11:45Z-
dc.date.issued2021-
dc.identifier.citationGeophysical Research Letters, 2021, v. 48 n. 7, p. article no. e2020GL091893-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/300898-
dc.description.abstractAerosols can affect crop photosynthesis by altering radiation and meteorological conditions. By combining field observations, mechanistic modeling, and satellite-retrieved solar-induced chlorophyll fluorescence (SIF), we assessed aerosols' impacts on crop photosynthesis from leaf to regional scale. We found that the initial increase in aerosol optical depth (AOD) enhanced photosynthesis of sun leaves, shade leaves, and canopy, which reached their maximum at AOD = 0.76, 1.13, and 0.93, respectively, and then decreased. Aerosol-induced changes in radiation regime and the concurrent high relative humidity led to such nonlinear responses. Similarly, the SIF of croplands in the North China Plain (NCP) also showed a bell-shaped response to aerosols. The optimal AOD level at which SIF reached the maximum value varied from 0.56 to 1.04, depending on the background meteorological conditions. Approximately 76%–90% of the NCP exceeded the optimal AOD level, suggesting that stringent aerosol pollution control could promote cropland productivity in this region.-
dc.languageeng-
dc.publisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007-
dc.relation.ispartofGeophysical Research Letters-
dc.rightsGeophysical Research Letters. Copyright © American Geophysical Union.-
dc.rights©[copyright year]. American Geophysical Union. All Rights Reserved. This article is available at https://doi.org/[DOI].-
dc.subjectAerosol loading-
dc.subjectdiffuse radiation-
dc.subjectphotosynthesis-
dc.subjectrelative humidity (RH)-
dc.subjectsolar-induced chlorophyll fluorescence (SIF)-
dc.titleIntermediate Aerosol Loading Enhances Photosynthetic Activity of Croplands-
dc.typeArticle-
dc.identifier.emailWu, J: jinwu@hku.hk-
dc.identifier.authorityWu, J=rp02509-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2020GL091893-
dc.identifier.scopuseid_2-s2.0-85104309750-
dc.identifier.hkuros323346-
dc.identifier.volume48-
dc.identifier.issue7-
dc.identifier.spagearticle no. e2020GL091893-
dc.identifier.epagearticle no. e2020GL091893-
dc.publisher.placeUnited States-

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