High nitrogen addition decreases the ozone flux by reducing the maximum stomatal conductance in poplar saplings.
Identifieur interne : 000355 ( Main/Exploration ); précédent : 000354; suivant : 000356High nitrogen addition decreases the ozone flux by reducing the maximum stomatal conductance in poplar saplings.
Auteurs : Bo Shang [République populaire de Chine] ; Yansen Xu [République populaire de Chine] ; Jinlong Peng [République populaire de Chine] ; Evgenios Agathokleous [République populaire de Chine] ; Zhaozhong Feng [République populaire de Chine]Source :
- Environmental pollution (Barking, Essex : 1987) [ 1873-6424 ] ; 2020.
Abstract
Ground-level ozone (O3) and nitrogen (N) deposition are major environmental pollutants, often occurring concurrently. Ozone exposure- and flux-response relationships for tree biomass are used for regional O3 risk assessment. In order to investigate whether soil N addition affects stomatal O3 uptake of poplar, poplar saplings were exposed to treatment combinations of five O3 levels and four N addition levels. High N addition treatment reduced the accumulated stomatal O3 uptake in the leaf due to reduced maximum stomatal conductance (gs). Nitrogen addition also significantly reduced the steady-state light-saturated gs in August and September. Elevated O3 significantly reduced and N addition increased total plant biomass; however, there were no significant O3 × N interactions. The slopes of biomass-based O3 exposure- and flux-response relationships did not differ significantly among N treatments. The critical levels for a 5% biomass reduction were estimated at 15.4 ppm h and 17.1 mmol O3 m-2 projected leaf area (PLA) for Accumulated O3 exposure Over an hourly Threshold of 40 ppb (AOT40) and Phytotoxic Ozone Dose above a threshold 1 nmol O3 m-2 PLA s-1 (POD1). These results can facilitate the evaluations of O3 effect on the carbon-sink capacity and productivity of forest.
DOI: 10.1016/j.envpol.2020.115979
PubMed: 33168377
Affiliations:
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Electronic address: zhaozhong.feng@nuist.edu.cn.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044</wicri:regionArea><wicri:noRegion>210044</wicri:noRegion></affiliation></author></analytic><series><title level="j">Environmental pollution (Barking, Essex : 1987)</title><idno type="eISSN">1873-6424</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Ground-level ozone (O<sub>3</sub>) and nitrogen (N) deposition are major environmental pollutants, often occurring concurrently. Ozone exposure- and flux-response relationships for tree biomass are used for regional O<sub>3</sub> risk assessment. In order to investigate whether soil N addition affects stomatal O<sub>3</sub> uptake of poplar, poplar saplings were exposed to treatment combinations of five O<sub>3</sub> levels and four N addition levels. High N addition treatment reduced the accumulated stomatal O<sub>3</sub> uptake in the leaf due to reduced maximum stomatal conductance (g<sub>s</sub>). Nitrogen addition also significantly reduced the steady-state light-saturated g<sub>s</sub> in August and September. Elevated O<sub>3</sub> significantly reduced and N addition increased total plant biomass; however, there were no significant O<sub>3</sub> × N interactions. The slopes of biomass-based O<sub>3</sub> exposure- and flux-response relationships did not differ significantly among N treatments. The critical levels for a 5% biomass reduction were estimated at 15.4 ppm h and 17.1 mmol O<sub>3</sub> m<sup>-2</sup> projected leaf area (PLA) for Accumulated O<sub>3</sub> exposure Over an hourly Threshold of 40 ppb (AOT40) and Phytotoxic Ozone Dose above a threshold 1 nmol O<sub>3</sub> m<sup>-2</sup> PLA s<sup>-1</sup> (POD<sub>1</sub>). These results can facilitate the evaluations of O<sub>3</sub> effect on the carbon-sink capacity and productivity of forest.</div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">33168377</PMID><DateRevised><Year>2020</Year><Month>11</Month><Day>10</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-6424</ISSN><JournalIssue CitedMedium="Internet"><PubDate><Year>2020</Year><Month>Nov</Month><Day>02</Day></PubDate></JournalIssue><Title>Environmental pollution (Barking, Essex : 1987)</Title><ISOAbbreviation>Environ Pollut</ISOAbbreviation></Journal><ArticleTitle>High nitrogen addition decreases the ozone flux by reducing the maximum stomatal conductance in poplar saplings.</ArticleTitle><Pagination><MedlinePgn>115979</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0269-7491(20)36668-9</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.envpol.2020.115979</ELocationID><Abstract><AbstractText>Ground-level ozone (O<sub>3</sub>) and nitrogen (N) deposition are major environmental pollutants, often occurring concurrently. Ozone exposure- and flux-response relationships for tree biomass are used for regional O<sub>3</sub> risk assessment. In order to investigate whether soil N addition affects stomatal O<sub>3</sub> uptake of poplar, poplar saplings were exposed to treatment combinations of five O<sub>3</sub> levels and four N addition levels. High N addition treatment reduced the accumulated stomatal O<sub>3</sub> uptake in the leaf due to reduced maximum stomatal conductance (g<sub>s</sub>). Nitrogen addition also significantly reduced the steady-state light-saturated g<sub>s</sub> in August and September. Elevated O<sub>3</sub> significantly reduced and N addition increased total plant biomass; however, there were no significant O<sub>3</sub> × N interactions. The slopes of biomass-based O<sub>3</sub> exposure- and flux-response relationships did not differ significantly among N treatments. The critical levels for a 5% biomass reduction were estimated at 15.4 ppm h and 17.1 mmol O<sub>3</sub> m<sup>-2</sup> projected leaf area (PLA) for Accumulated O<sub>3</sub> exposure Over an hourly Threshold of 40 ppb (AOT40) and Phytotoxic Ozone Dose above a threshold 1 nmol O<sub>3</sub> m<sup>-2</sup> PLA s<sup>-1</sup> (POD<sub>1</sub>). These results can facilitate the evaluations of O<sub>3</sub> effect on the carbon-sink capacity and productivity of forest.</AbstractText><CopyrightInformation>Copyright © 2020 Elsevier Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Shang</LastName><ForeName>Bo</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Xu</LastName><ForeName>Yansen</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Peng</LastName><ForeName>Jinlong</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Agathokleous</LastName><ForeName>Evgenios</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Feng</LastName><ForeName>Zhaozhong</ForeName><Initials>Z</Initials><AffiliationInfo><Affiliation>Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China. Electronic address: zhaozhong.feng@nuist.edu.cn.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>11</Month><Day>02</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Environ Pollut</MedlineTA><NlmUniqueID>8804476</NlmUniqueID><ISSNLinking>0269-7491</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Biomass</Keyword><Keyword MajorTopicYN="N">Critical levels</Keyword><Keyword MajorTopicYN="N">Dose-response relationship</Keyword><Keyword MajorTopicYN="N">Nitrogen addition</Keyword><Keyword MajorTopicYN="N">Ozone</Keyword><Keyword MajorTopicYN="N">Poplar</Keyword></KeywordList><CoiStatement>Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2020</Year><Month>09</Month><Day>05</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2020</Year><Month>10</Month><Day>24</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>10</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>11</Month><Day>10</Day><Hour>5</Hour><Minute>36</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>11</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>11</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>aheadofprint</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">33168377</ArticleId><ArticleId IdType="pii">S0269-7491(20)36668-9</ArticleId><ArticleId IdType="doi">10.1016/j.envpol.2020.115979</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Shang, Bo" sort="Shang, Bo" uniqKey="Shang B" first="Bo" last="Shang">Bo Shang</name></noRegion><name sortKey="Agathokleous, Evgenios" sort="Agathokleous, Evgenios" uniqKey="Agathokleous E" first="Evgenios" last="Agathokleous">Evgenios Agathokleous</name><name sortKey="Feng, Zhaozhong" sort="Feng, Zhaozhong" uniqKey="Feng Z" first="Zhaozhong" last="Feng">Zhaozhong Feng</name><name sortKey="Peng, Jinlong" sort="Peng, Jinlong" uniqKey="Peng J" first="Jinlong" last="Peng">Jinlong Peng</name><name sortKey="Xu, Yansen" sort="Xu, Yansen" uniqKey="Xu Y" first="Yansen" last="Xu">Yansen Xu</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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