Differential responses of respiration and photosynthesis to air temperature over a moist tundra ecosystem of Alaska and its impact on changing carbon cycle
This study analyzed the sensitivities of carbon cycle to surface air temperature using the CO 2 flux data collected from June to September for six years (2014–2019) over a moist tundra site in Council, Alaska. The tundra ecosystem was a strong sink of carbon in June and July, a weak sink in August w...
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| Veröffentlicht in: | Environmental Research Communications 2024-04, Vol.6 (4), p.41003 |
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| creator | Lee, Ji-Yeon Chae, Namyi Kim, Yongwon Yun, Juyeol Jeong, Sujong Choi, Taejin Kim, Seong-Joong Lee, Bang-Yong Park, Sang-Jong |
| description | This study analyzed the sensitivities of carbon cycle to surface air temperature using the CO
2
flux data collected from June to September for six years (2014–2019) over a moist tundra site in Council, Alaska. The tundra ecosystem was a strong sink of carbon in June and July, a weak sink in August with rapidly decreasing photosynthesis, and a carbon source in September. The ecosystem respiration (Re) and gross primary production (GPP) were obtained from the net ecosystem exchange (NEE) of eddy-covariance system. Both the Re and GPP increased with temperature, enhancing carbon emission and uptake during observation period. Notably, Re showed higher sensitivity to temperature than GPP did. This result means that as global warming continues, the increase in carbon release is greater than the increase in carbon uptake. In other words, the tundra ecosystem is expected to become a weaker carbon sink in June and July and a stronger source of carbon in September. Possible mechanism of different temperature sensitivities of Re and GPP as well as temporal variations of temperature sensitivities are suggested. Present results highlight the importance of understanding the temperature sensitivities of Re and GPP in various tundra ecosystems to accurately understand changes in the carbon cycle in the Arctic region. |
| doi_str_mv | 10.1088/2515-7620/ad3c17 |
| format | Article |
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2
flux data collected from June to September for six years (2014–2019) over a moist tundra site in Council, Alaska. The tundra ecosystem was a strong sink of carbon in June and July, a weak sink in August with rapidly decreasing photosynthesis, and a carbon source in September. The ecosystem respiration (Re) and gross primary production (GPP) were obtained from the net ecosystem exchange (NEE) of eddy-covariance system. Both the Re and GPP increased with temperature, enhancing carbon emission and uptake during observation period. Notably, Re showed higher sensitivity to temperature than GPP did. This result means that as global warming continues, the increase in carbon release is greater than the increase in carbon uptake. In other words, the tundra ecosystem is expected to become a weaker carbon sink in June and July and a stronger source of carbon in September. Possible mechanism of different temperature sensitivities of Re and GPP as well as temporal variations of temperature sensitivities are suggested. Present results highlight the importance of understanding the temperature sensitivities of Re and GPP in various tundra ecosystems to accurately understand changes in the carbon cycle in the Arctic region.</description><identifier>ISSN: 2515-7620</identifier><identifier>EISSN: 2515-7620</identifier><identifier>DOI: 10.1088/2515-7620/ad3c17</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>Air temperature ; Arctic zone ; Carbon ; Carbon cycle ; Carbon dioxide ; Carbon sinks ; Carbon sources ; Climate change ; ecosystem respiration ; Ecosystems ; Emissions ; Global warming ; GPP ; Ice environments ; moist tundra ecosystem ; NEE ; Photosynthesis ; Primary production ; Respiration ; Sensitivity analysis ; Surface temperature ; Taiga & tundra ; temperature sensitivity ; Temporal variations ; Tundra</subject><ispartof>Environmental Research Communications, 2024-04, Vol.6 (4), p.41003</ispartof><rights>2024 The Author(s). Published by IOP Publishing Ltd</rights><rights>2024 The Author(s). Published by IOP Publishing Ltd. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c400t-99a7ac42577ae9f6ab8db7b2a659b8ced31ba4e440a6ed1db6c0903b7a30547e3</cites><orcidid>0000-0002-6944-6962 ; 0000-0002-6232-8082 ; 0000-0002-6167-811X ; 0009-0006-1932-8112</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/2515-7620/ad3c17/pdf$$EPDF$$P50$$Giop$$Hfree_for_read</linktopdf><link.rule.ids>314,780,784,864,2102,27924,27925,38890,53867</link.rule.ids></links><search><creatorcontrib>Lee, Ji-Yeon</creatorcontrib><creatorcontrib>Chae, Namyi</creatorcontrib><creatorcontrib>Kim, Yongwon</creatorcontrib><creatorcontrib>Yun, Juyeol</creatorcontrib><creatorcontrib>Jeong, Sujong</creatorcontrib><creatorcontrib>Choi, Taejin</creatorcontrib><creatorcontrib>Kim, Seong-Joong</creatorcontrib><creatorcontrib>Lee, Bang-Yong</creatorcontrib><creatorcontrib>Park, Sang-Jong</creatorcontrib><title>Differential responses of respiration and photosynthesis to air temperature over a moist tundra ecosystem of Alaska and its impact on changing carbon cycle</title><title>Environmental Research Communications</title><addtitle>ERC</addtitle><addtitle>Environ. Res. Commun</addtitle><description>This study analyzed the sensitivities of carbon cycle to surface air temperature using the CO
2
flux data collected from June to September for six years (2014–2019) over a moist tundra site in Council, Alaska. The tundra ecosystem was a strong sink of carbon in June and July, a weak sink in August with rapidly decreasing photosynthesis, and a carbon source in September. The ecosystem respiration (Re) and gross primary production (GPP) were obtained from the net ecosystem exchange (NEE) of eddy-covariance system. Both the Re and GPP increased with temperature, enhancing carbon emission and uptake during observation period. Notably, Re showed higher sensitivity to temperature than GPP did. This result means that as global warming continues, the increase in carbon release is greater than the increase in carbon uptake. In other words, the tundra ecosystem is expected to become a weaker carbon sink in June and July and a stronger source of carbon in September. Possible mechanism of different temperature sensitivities of Re and GPP as well as temporal variations of temperature sensitivities are suggested. Present results highlight the importance of understanding the temperature sensitivities of Re and GPP in various tundra ecosystems to accurately understand changes in the carbon cycle in the Arctic region.</description><subject>Air temperature</subject><subject>Arctic zone</subject><subject>Carbon</subject><subject>Carbon cycle</subject><subject>Carbon dioxide</subject><subject>Carbon sinks</subject><subject>Carbon sources</subject><subject>Climate change</subject><subject>ecosystem respiration</subject><subject>Ecosystems</subject><subject>Emissions</subject><subject>Global warming</subject><subject>GPP</subject><subject>Ice environments</subject><subject>moist tundra ecosystem</subject><subject>NEE</subject><subject>Photosynthesis</subject><subject>Primary production</subject><subject>Respiration</subject><subject>Sensitivity analysis</subject><subject>Surface temperature</subject><subject>Taiga & tundra</subject><subject>temperature sensitivity</subject><subject>Temporal variations</subject><subject>Tundra</subject><issn>2515-7620</issn><issn>2515-7620</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>O3W</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNp9kUFr3DAQhU1poCHJvUdBoaduMrJkyT6GtE0DgV6asxhL411tdy1X0hb2t_TPRl6XtIfSkzTDe988eFX1lsM1h7a9qRverLSq4QadsFy_qs5fVq__-r-prlLaAkCtOwlcnle_PvphoEhj9rhjkdIUxkSJheE0-IjZh5Hh6Ni0CTmk45g3lHxiOTD0kWXaT1RUh0gs_KTIkO2DT5nlw-giMrLFk4pqRt7uMH3HE83nxPx-QptZ4dsNjms_rpnF2M_z0e7osjobcJfo6vd7UT19_vTt7svq8ev9w93t48pKgLzqOtRoZd1ojdQNCvvW9bqvUTVd31pygvcoSUpARY67XlnoQPQaBTRSk7ioHhauC7g1U_R7jEcT0JvTIsS1wZh9SWSkRs1rIVztatkCdD0nwk43qtEljS2sdwtriuHHgVI223CIY4lvBEguFCiuigoWlY0hpUjDy1UOZm7UzJWZuTKzNFosHxaLD9Mf5n_k7_8hp2iNMtKUJADCTG4Qz1uMsW4</recordid><startdate>20240401</startdate><enddate>20240401</enddate><creator>Lee, Ji-Yeon</creator><creator>Chae, Namyi</creator><creator>Kim, Yongwon</creator><creator>Yun, Juyeol</creator><creator>Jeong, Sujong</creator><creator>Choi, Taejin</creator><creator>Kim, Seong-Joong</creator><creator>Lee, Bang-Yong</creator><creator>Park, Sang-Jong</creator><general>IOP Publishing</general><scope>O3W</scope><scope>TSCCA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>PATMY</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-6944-6962</orcidid><orcidid>https://orcid.org/0000-0002-6232-8082</orcidid><orcidid>https://orcid.org/0000-0002-6167-811X</orcidid><orcidid>https://orcid.org/0009-0006-1932-8112</orcidid></search><sort><creationdate>20240401</creationdate><title>Differential responses of respiration and photosynthesis to air temperature over a moist tundra ecosystem of Alaska and its impact on changing carbon cycle</title><author>Lee, Ji-Yeon ; Chae, Namyi ; Kim, Yongwon ; Yun, Juyeol ; Jeong, Sujong ; Choi, Taejin ; Kim, Seong-Joong ; Lee, Bang-Yong ; Park, Sang-Jong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-99a7ac42577ae9f6ab8db7b2a659b8ced31ba4e440a6ed1db6c0903b7a30547e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Air temperature</topic><topic>Arctic zone</topic><topic>Carbon</topic><topic>Carbon cycle</topic><topic>Carbon dioxide</topic><topic>Carbon sinks</topic><topic>Carbon sources</topic><topic>Climate change</topic><topic>ecosystem respiration</topic><topic>Ecosystems</topic><topic>Emissions</topic><topic>Global warming</topic><topic>GPP</topic><topic>Ice environments</topic><topic>moist tundra ecosystem</topic><topic>NEE</topic><topic>Photosynthesis</topic><topic>Primary production</topic><topic>Respiration</topic><topic>Sensitivity analysis</topic><topic>Surface temperature</topic><topic>Taiga & tundra</topic><topic>temperature sensitivity</topic><topic>Temporal variations</topic><topic>Tundra</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Ji-Yeon</creatorcontrib><creatorcontrib>Chae, Namyi</creatorcontrib><creatorcontrib>Kim, Yongwon</creatorcontrib><creatorcontrib>Yun, Juyeol</creatorcontrib><creatorcontrib>Jeong, Sujong</creatorcontrib><creatorcontrib>Choi, Taejin</creatorcontrib><creatorcontrib>Kim, Seong-Joong</creatorcontrib><creatorcontrib>Lee, Bang-Yong</creatorcontrib><creatorcontrib>Park, Sang-Jong</creatorcontrib><collection>IOP_英国物理学会OA刊</collection><collection>IOPscience (Open Access)</collection><collection>CrossRef</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection (Proquest) (PQ_SDU_P3)</collection><collection>Environmental Science Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Environmental Research Communications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Ji-Yeon</au><au>Chae, Namyi</au><au>Kim, Yongwon</au><au>Yun, Juyeol</au><au>Jeong, Sujong</au><au>Choi, Taejin</au><au>Kim, Seong-Joong</au><au>Lee, Bang-Yong</au><au>Park, Sang-Jong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Differential responses of respiration and photosynthesis to air temperature over a moist tundra ecosystem of Alaska and its impact on changing carbon cycle</atitle><jtitle>Environmental Research Communications</jtitle><stitle>ERC</stitle><addtitle>Environ. 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2
flux data collected from June to September for six years (2014–2019) over a moist tundra site in Council, Alaska. The tundra ecosystem was a strong sink of carbon in June and July, a weak sink in August with rapidly decreasing photosynthesis, and a carbon source in September. The ecosystem respiration (Re) and gross primary production (GPP) were obtained from the net ecosystem exchange (NEE) of eddy-covariance system. Both the Re and GPP increased with temperature, enhancing carbon emission and uptake during observation period. Notably, Re showed higher sensitivity to temperature than GPP did. This result means that as global warming continues, the increase in carbon release is greater than the increase in carbon uptake. In other words, the tundra ecosystem is expected to become a weaker carbon sink in June and July and a stronger source of carbon in September. Possible mechanism of different temperature sensitivities of Re and GPP as well as temporal variations of temperature sensitivities are suggested. Present results highlight the importance of understanding the temperature sensitivities of Re and GPP in various tundra ecosystems to accurately understand changes in the carbon cycle in the Arctic region.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><doi>10.1088/2515-7620/ad3c17</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-6944-6962</orcidid><orcidid>https://orcid.org/0000-0002-6232-8082</orcidid><orcidid>https://orcid.org/0000-0002-6167-811X</orcidid><orcidid>https://orcid.org/0009-0006-1932-8112</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Air temperature Arctic zone Carbon Carbon cycle Carbon dioxide Carbon sinks Carbon sources Climate change ecosystem respiration Ecosystems Emissions Global warming GPP Ice environments moist tundra ecosystem NEE Photosynthesis Primary production Respiration Sensitivity analysis Surface temperature Taiga & tundra temperature sensitivity Temporal variations Tundra |
| title | Differential responses of respiration and photosynthesis to air temperature over a moist tundra ecosystem of Alaska and its impact on changing carbon cycle |
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