Diurnal and seasonal change in stem respiration of Larix principis-rupprechtii trees, northern China
Stem respiration is a critical and uncertain component of ecosystem carbon cycle. Few studies reported diurnal change in stem respiration as well as its linkage with climate. In this study, we investigated the diurnal and seasonal change in stem respiration and its linkage with environmental factors...
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| description | Stem respiration is a critical and uncertain component of ecosystem carbon cycle. Few studies reported diurnal change in stem respiration as well as its linkage with climate. In this study, we investigated the diurnal and seasonal change in stem respiration and its linkage with environmental factors, in larch plantations of northern China from 2010 to 2012. The stem respiration per unit surface area (RS) showed clear diurnal cycles, ranging from 1.65±0.10 to 2.69±0.15 µmol m(-2) s(-1), increased after 6∶00, peaked at 15∶00 and then decreased. Both stem temperature and air temperature show similar diurnal pattern, while the diurnal pattern of air relative humidity is just the opposite to Rs. Similar to the diurnal cycles, seasonal change in RS followed the pattern of stem temperature. RS increased from May (1.28±0.07 µmol m(-2) s(-1)) when the stem temperature was relatively low and peaked in July (3.02±0.10 µmol m(-2) s(-1)) when the stem temperature was also the highest. Further regression analyses show that RS exponentially increases with increasing temperature, and the Q10 of Rs at mid daytime (1.97±0.17 at 12∶00 and 1.96±0.10 at 15∶00) is significantly lower than that of mid nighttime (2.60±0.14 at 00∶00 and 2.71±0.25 at 03∶00) Q10. This result not only implies that Rs is more sensitive to night than day warming, but also highlights that temperature responses of Rs estimated by only daytime measurement can lead to underestimated stem respiration increase under global warming, especially considering that temperature increase is faster during nighttime. |
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Few studies reported diurnal change in stem respiration as well as its linkage with climate. In this study, we investigated the diurnal and seasonal change in stem respiration and its linkage with environmental factors, in larch plantations of northern China from 2010 to 2012. The stem respiration per unit surface area (RS) showed clear diurnal cycles, ranging from 1.65±0.10 to 2.69±0.15 µmol m(-2) s(-1), increased after 6∶00, peaked at 15∶00 and then decreased. Both stem temperature and air temperature show similar diurnal pattern, while the diurnal pattern of air relative humidity is just the opposite to Rs. Similar to the diurnal cycles, seasonal change in RS followed the pattern of stem temperature. RS increased from May (1.28±0.07 µmol m(-2) s(-1)) when the stem temperature was relatively low and peaked in July (3.02±0.10 µmol m(-2) s(-1)) when the stem temperature was also the highest. Further regression analyses show that RS exponentially increases with increasing temperature, and the Q10 of Rs at mid daytime (1.97±0.17 at 12∶00 and 1.96±0.10 at 15∶00) is significantly lower than that of mid nighttime (2.60±0.14 at 00∶00 and 2.71±0.25 at 03∶00) Q10. This result not only implies that Rs is more sensitive to night than day warming, but also highlights that temperature responses of Rs estimated by only daytime measurement can lead to underestimated stem respiration increase under global warming, especially considering that temperature increase is faster during nighttime.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0089294</identifier><identifier>PMID: 24586668</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Air temperature ; Biology ; Carbon cycle ; Carbon dioxide ; China ; Circadian Rhythm ; Climate change ; Daytime ; Diurnal ; Earth Sciences ; Ecology ; Ecosystems ; Education ; Environmental changes ; Environmental factors ; Environmental science ; Forests ; Global warming ; Laboratories ; Larix - physiology ; Leaves ; Night ; Nighttime ; Photosynthesis ; Pinus palustris ; Pinus taeda ; Plant Stems - physiology ; Plantations ; Regression analysis ; Relative humidity ; Respiration ; Seasons ; Stems ; Studies ; Surface area ; Temperature effects ; Temperature rise ; Topography ; Trees ; Vegetation</subject><ispartof>PloS one, 2014-02, Vol.9 (2), p.e89294</ispartof><rights>COPYRIGHT 2014 Public Library of Science</rights><rights>2014 Yang et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Few studies reported diurnal change in stem respiration as well as its linkage with climate. In this study, we investigated the diurnal and seasonal change in stem respiration and its linkage with environmental factors, in larch plantations of northern China from 2010 to 2012. The stem respiration per unit surface area (RS) showed clear diurnal cycles, ranging from 1.65±0.10 to 2.69±0.15 µmol m(-2) s(-1), increased after 6∶00, peaked at 15∶00 and then decreased. Both stem temperature and air temperature show similar diurnal pattern, while the diurnal pattern of air relative humidity is just the opposite to Rs. Similar to the diurnal cycles, seasonal change in RS followed the pattern of stem temperature. RS increased from May (1.28±0.07 µmol m(-2) s(-1)) when the stem temperature was relatively low and peaked in July (3.02±0.10 µmol m(-2) s(-1)) when the stem temperature was also the highest. Further regression analyses show that RS exponentially increases with increasing temperature, and the Q10 of Rs at mid daytime (1.97±0.17 at 12∶00 and 1.96±0.10 at 15∶00) is significantly lower than that of mid nighttime (2.60±0.14 at 00∶00 and 2.71±0.25 at 03∶00) Q10. This result not only implies that Rs is more sensitive to night than day warming, but also highlights that temperature responses of Rs estimated by only daytime measurement can lead to underestimated stem respiration increase under global warming, especially considering that temperature increase is faster during nighttime.</description><subject>Air temperature</subject><subject>Biology</subject><subject>Carbon cycle</subject><subject>Carbon dioxide</subject><subject>China</subject><subject>Circadian Rhythm</subject><subject>Climate change</subject><subject>Daytime</subject><subject>Diurnal</subject><subject>Earth Sciences</subject><subject>Ecology</subject><subject>Ecosystems</subject><subject>Education</subject><subject>Environmental changes</subject><subject>Environmental factors</subject><subject>Environmental science</subject><subject>Forests</subject><subject>Global warming</subject><subject>Laboratories</subject><subject>Larix - physiology</subject><subject>Leaves</subject><subject>Night</subject><subject>Nighttime</subject><subject>Photosynthesis</subject><subject>Pinus palustris</subject><subject>Pinus taeda</subject><subject>Plant Stems - physiology</subject><subject>Plantations</subject><subject>Regression analysis</subject><subject>Relative humidity</subject><subject>Respiration</subject><subject>Seasons</subject><subject>Stems</subject><subject>Studies</subject><subject>Surface area</subject><subject>Temperature effects</subject><subject>Temperature rise</subject><subject>Topography</subject><subject>Trees</subject><subject>Vegetation</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</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>eNqNkmuL1DAUhoso7rr6D0QLgiA4Y3Nt-0VYxtvAwIK3ryGTnE4zdJJuksr67013ussUFCQfmstz3p7z8mbZc1QsESnRu70bvJXdsncWlkVR1bimD7JzVBO84LggD0_2Z9mTEPZFwUjF-ePsDFOWNrw6z_QHcyuTS6vzADK48aBaaXeQG5uHCIfcQ-iNl9E4m7sm30hvbvLeG6tMb8LCD33vQbXRmDx6gPA2t87HFrzNV62x8mn2qJFdgGfT9yL78enj99WXxebq83p1uVkoXuO4kDXluGGwlXLLEWOMAHBaMCCcbnGJUaHJOEK95VUhFWiCaqYpI2lEWgIjF9nLo27fuSAmg4JArMCc4oqiRKyPhHZyL9IIB-l_CyeNuL1wfiekj0Z1IDhDihKiEcgtLStUlbXUTDe0RJhzTZLW--lvw_YAWoGNXnYz0fmLNa3YuV-C1CTZT5PAq0nAu-sBQvxHyxO1k6krYxuXxNTBBCUuU19ljSkdtZZ_odLScDAqRaQx6X5W8GZWkJgIN3EnhxDE-tvX_2evfs7Z1ydsC7KLbXDdMIYnzEF6BJV3IXho7p1DhRgTfueGGBMupoSnshenrt8X3UWa_AH42vXg</recordid><startdate>20140226</startdate><enddate>20140226</enddate><creator>Yang, Yan</creator><creator>Zhao, Miao</creator><creator>Xu, Xiangtao</creator><creator>Sun, Zhenzhong</creator><creator>Yin, Guodong</creator><creator>Piao, Shilong</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20140226</creationdate><title>Diurnal and seasonal change in stem respiration of Larix principis-rupprechtii trees, northern China</title><author>Yang, Yan ; Zhao, Miao ; Xu, Xiangtao ; Sun, Zhenzhong ; Yin, Guodong ; Piao, Shilong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-a9462f5ebaab615553ee6405e364b27210d305389b680aced3195d45362047e53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Air temperature</topic><topic>Biology</topic><topic>Carbon cycle</topic><topic>Carbon dioxide</topic><topic>China</topic><topic>Circadian Rhythm</topic><topic>Climate change</topic><topic>Daytime</topic><topic>Diurnal</topic><topic>Earth Sciences</topic><topic>Ecology</topic><topic>Ecosystems</topic><topic>Education</topic><topic>Environmental changes</topic><topic>Environmental factors</topic><topic>Environmental science</topic><topic>Forests</topic><topic>Global warming</topic><topic>Laboratories</topic><topic>Larix - 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Few studies reported diurnal change in stem respiration as well as its linkage with climate. In this study, we investigated the diurnal and seasonal change in stem respiration and its linkage with environmental factors, in larch plantations of northern China from 2010 to 2012. The stem respiration per unit surface area (RS) showed clear diurnal cycles, ranging from 1.65±0.10 to 2.69±0.15 µmol m(-2) s(-1), increased after 6∶00, peaked at 15∶00 and then decreased. Both stem temperature and air temperature show similar diurnal pattern, while the diurnal pattern of air relative humidity is just the opposite to Rs. Similar to the diurnal cycles, seasonal change in RS followed the pattern of stem temperature. RS increased from May (1.28±0.07 µmol m(-2) s(-1)) when the stem temperature was relatively low and peaked in July (3.02±0.10 µmol m(-2) s(-1)) when the stem temperature was also the highest. Further regression analyses show that RS exponentially increases with increasing temperature, and the Q10 of Rs at mid daytime (1.97±0.17 at 12∶00 and 1.96±0.10 at 15∶00) is significantly lower than that of mid nighttime (2.60±0.14 at 00∶00 and 2.71±0.25 at 03∶00) Q10. This result not only implies that Rs is more sensitive to night than day warming, but also highlights that temperature responses of Rs estimated by only daytime measurement can lead to underestimated stem respiration increase under global warming, especially considering that temperature increase is faster during nighttime.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24586668</pmid><doi>10.1371/journal.pone.0089294</doi><tpages>e89294</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Air temperature Biology Carbon cycle Carbon dioxide China Circadian Rhythm Climate change Daytime Diurnal Earth Sciences Ecology Ecosystems Education Environmental changes Environmental factors Environmental science Forests Global warming Laboratories Larix - physiology Leaves Night Nighttime Photosynthesis Pinus palustris Pinus taeda Plant Stems - physiology Plantations Regression analysis Relative humidity Respiration Seasons Stems Studies Surface area Temperature effects Temperature rise Topography Trees Vegetation |
| title | Diurnal and seasonal change in stem respiration of Larix principis-rupprechtii trees, northern China |
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