Changes in the Carbon and Water Fluxes of Subtropical Forest Ecosystems in South-Western China Related to Drought
Drought impacts carbon and water fluxes of terrestrial ecosystems, which are strongly coupled. However, the magnitudes of response of carbon and water fluxes to drought are dependent on many processes, which are more complex than previously expected. Southern China experienced regional climatic pert...
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Veröffentlicht in: | Water (Basel) 2018-07, Vol.10 (7), p.821 |
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description | Drought impacts carbon and water fluxes of terrestrial ecosystems, which are strongly coupled. However, the magnitudes of response of carbon and water fluxes to drought are dependent on many processes, which are more complex than previously expected. Southern China experienced regional climatic perturbation events in the past decade and a two-year drought in 2009–2010. We used a terrestrial ecosystem model coupled with remotely sensed observations and metrological data to simulate the variations of net primary productivity (NPP), evapotranspiration (ET), and water-use efficiency (WUE) (i.e., NPP/ET) in south-western China during the period 2001–2010. Using the standard precipitation index (SPI) classifying different drought stresses, we also quantified the effect of drought on the ecosystem by comparing changes in modelled estimates of monthly WUE, NPP and ET under normal (i.e., baseline) and drought conditions (i.e., 2009 and 2010). The results indicated that NPP and ET showed synchronized declines in drought periods, with time-lag effects. Furthermore, drought-induced NPP decline was larger than ET reduction. An increasing trend in WUE from the moderate to extreme drought classes occurred not only in baseline conditions but also in drought conditions. Especially in the extreme drought period (January, 2010), WUE for the forest ecosystem typically showed a positive response to drought, indicating a drought-resilient forest ecosystem. Our study has important implications for understanding climate extreme effects on the carbon and water cycle of the forest ecosystem. |
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However, the magnitudes of response of carbon and water fluxes to drought are dependent on many processes, which are more complex than previously expected. Southern China experienced regional climatic perturbation events in the past decade and a two-year drought in 2009–2010. We used a terrestrial ecosystem model coupled with remotely sensed observations and metrological data to simulate the variations of net primary productivity (NPP), evapotranspiration (ET), and water-use efficiency (WUE) (i.e., NPP/ET) in south-western China during the period 2001–2010. Using the standard precipitation index (SPI) classifying different drought stresses, we also quantified the effect of drought on the ecosystem by comparing changes in modelled estimates of monthly WUE, NPP and ET under normal (i.e., baseline) and drought conditions (i.e., 2009 and 2010). The results indicated that NPP and ET showed synchronized declines in drought periods, with time-lag effects. Furthermore, drought-induced NPP decline was larger than ET reduction. An increasing trend in WUE from the moderate to extreme drought classes occurred not only in baseline conditions but also in drought conditions. Especially in the extreme drought period (January, 2010), WUE for the forest ecosystem typically showed a positive response to drought, indicating a drought-resilient forest ecosystem. Our study has important implications for understanding climate extreme effects on the carbon and water cycle of the forest ecosystem.</description><identifier>ISSN: 2073-4441</identifier><identifier>EISSN: 2073-4441</identifier><identifier>DOI: 10.3390/w10070821</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Analysis ; Carbon ; China ; Climate effects ; Computer simulation ; Drought ; Droughts ; Ecosystem models ; Environmental changes ; Evapotranspiration ; Fluxes ; Forest ecology ; Forest ecosystems ; Forests ; Hydrologic cycle ; Net Primary Productivity ; Rainfall ; Terrestrial ecosystems ; Terrestrial environments ; Water use</subject><ispartof>Water (Basel), 2018-07, Vol.10 (7), p.821</ispartof><rights>COPYRIGHT 2018 MDPI AG</rights><rights>2018. This work is licensed under https://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><citedby>FETCH-LOGICAL-c331t-12d91f6668acd2b26780909da5258f396003db046a73a6a49030d357e862d19a3</citedby><cites>FETCH-LOGICAL-c331t-12d91f6668acd2b26780909da5258f396003db046a73a6a49030d357e862d19a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Zhou, Lei</creatorcontrib><creatorcontrib>Wang, Shaoqiang</creatorcontrib><creatorcontrib>Chi, Yonggang</creatorcontrib><creatorcontrib>Ju, Weimin</creatorcontrib><creatorcontrib>Huang, Kun</creatorcontrib><creatorcontrib>Mickler, Robert</creatorcontrib><creatorcontrib>Wang, Miaomiao</creatorcontrib><creatorcontrib>Yu, Quanzhou</creatorcontrib><title>Changes in the Carbon and Water Fluxes of Subtropical Forest Ecosystems in South-Western China Related to Drought</title><title>Water (Basel)</title><description>Drought impacts carbon and water fluxes of terrestrial ecosystems, which are strongly coupled. However, the magnitudes of response of carbon and water fluxes to drought are dependent on many processes, which are more complex than previously expected. Southern China experienced regional climatic perturbation events in the past decade and a two-year drought in 2009–2010. We used a terrestrial ecosystem model coupled with remotely sensed observations and metrological data to simulate the variations of net primary productivity (NPP), evapotranspiration (ET), and water-use efficiency (WUE) (i.e., NPP/ET) in south-western China during the period 2001–2010. Using the standard precipitation index (SPI) classifying different drought stresses, we also quantified the effect of drought on the ecosystem by comparing changes in modelled estimates of monthly WUE, NPP and ET under normal (i.e., baseline) and drought conditions (i.e., 2009 and 2010). The results indicated that NPP and ET showed synchronized declines in drought periods, with time-lag effects. Furthermore, drought-induced NPP decline was larger than ET reduction. An increasing trend in WUE from the moderate to extreme drought classes occurred not only in baseline conditions but also in drought conditions. Especially in the extreme drought period (January, 2010), WUE for the forest ecosystem typically showed a positive response to drought, indicating a drought-resilient forest ecosystem. Our study has important implications for understanding climate extreme effects on the carbon and water cycle of the forest ecosystem.</description><subject>Analysis</subject><subject>Carbon</subject><subject>China</subject><subject>Climate effects</subject><subject>Computer simulation</subject><subject>Drought</subject><subject>Droughts</subject><subject>Ecosystem models</subject><subject>Environmental changes</subject><subject>Evapotranspiration</subject><subject>Fluxes</subject><subject>Forest ecology</subject><subject>Forest ecosystems</subject><subject>Forests</subject><subject>Hydrologic cycle</subject><subject>Net Primary Productivity</subject><subject>Rainfall</subject><subject>Terrestrial ecosystems</subject><subject>Terrestrial environments</subject><subject>Water use</subject><issn>2073-4441</issn><issn>2073-4441</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpNUV9LwzAQL6Lg0D34DQI--dB5Sdo0eRx1U2EgOGWPJWvStaNLtiRF9-2NTsS7hzvu9-cOLkluMEwoFXD_gQEK4ASfJSMCBU2zLMPn__rLZOz9FmJkgvMcRsmhbKXZaI86g0KrUSnd2hokjUIrGbRD8374jLBt0HJYB2f3XS17NLdO-4BmtfVHH_TuR7-0Q2jTVQS0M6hsOyPRq-6jjULBogdnh00brpOLRvZej3_rVfI-n72VT-ni5fG5nC7SmlIcUkyUwA1jjMtakTVhBQcBQsmc5LyhggFQtYaMyYJKJjMBFBTNC80ZUVhIepXcnnz3zh6GeFS1tYMzcWVFMPCCMspZZE1OrI3sddWZxgYn65hK77raGt10cT4toj3hLBdRcHcS1M5673RT7V23k-5YYai-v1D9fYF-ARTyd5o</recordid><startdate>20180701</startdate><enddate>20180701</enddate><creator>Zhou, Lei</creator><creator>Wang, Shaoqiang</creator><creator>Chi, Yonggang</creator><creator>Ju, Weimin</creator><creator>Huang, Kun</creator><creator>Mickler, Robert</creator><creator>Wang, Miaomiao</creator><creator>Yu, Quanzhou</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20180701</creationdate><title>Changes in the Carbon and Water Fluxes of Subtropical Forest Ecosystems in South-Western China Related to Drought</title><author>Zhou, Lei ; Wang, Shaoqiang ; Chi, Yonggang ; Ju, Weimin ; Huang, Kun ; Mickler, Robert ; Wang, Miaomiao ; Yu, Quanzhou</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c331t-12d91f6668acd2b26780909da5258f396003db046a73a6a49030d357e862d19a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Analysis</topic><topic>Carbon</topic><topic>China</topic><topic>Climate effects</topic><topic>Computer simulation</topic><topic>Drought</topic><topic>Droughts</topic><topic>Ecosystem models</topic><topic>Environmental changes</topic><topic>Evapotranspiration</topic><topic>Fluxes</topic><topic>Forest ecology</topic><topic>Forest ecosystems</topic><topic>Forests</topic><topic>Hydrologic cycle</topic><topic>Net Primary Productivity</topic><topic>Rainfall</topic><topic>Terrestrial ecosystems</topic><topic>Terrestrial environments</topic><topic>Water use</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Lei</creatorcontrib><creatorcontrib>Wang, Shaoqiang</creatorcontrib><creatorcontrib>Chi, Yonggang</creatorcontrib><creatorcontrib>Ju, Weimin</creatorcontrib><creatorcontrib>Huang, Kun</creatorcontrib><creatorcontrib>Mickler, Robert</creatorcontrib><creatorcontrib>Wang, Miaomiao</creatorcontrib><creatorcontrib>Yu, Quanzhou</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Water (Basel)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhou, Lei</au><au>Wang, Shaoqiang</au><au>Chi, Yonggang</au><au>Ju, Weimin</au><au>Huang, Kun</au><au>Mickler, Robert</au><au>Wang, Miaomiao</au><au>Yu, Quanzhou</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Changes in the Carbon and Water Fluxes of Subtropical Forest Ecosystems in South-Western China Related to Drought</atitle><jtitle>Water (Basel)</jtitle><date>2018-07-01</date><risdate>2018</risdate><volume>10</volume><issue>7</issue><spage>821</spage><pages>821-</pages><issn>2073-4441</issn><eissn>2073-4441</eissn><abstract>Drought impacts carbon and water fluxes of terrestrial ecosystems, which are strongly coupled. However, the magnitudes of response of carbon and water fluxes to drought are dependent on many processes, which are more complex than previously expected. Southern China experienced regional climatic perturbation events in the past decade and a two-year drought in 2009–2010. We used a terrestrial ecosystem model coupled with remotely sensed observations and metrological data to simulate the variations of net primary productivity (NPP), evapotranspiration (ET), and water-use efficiency (WUE) (i.e., NPP/ET) in south-western China during the period 2001–2010. Using the standard precipitation index (SPI) classifying different drought stresses, we also quantified the effect of drought on the ecosystem by comparing changes in modelled estimates of monthly WUE, NPP and ET under normal (i.e., baseline) and drought conditions (i.e., 2009 and 2010). The results indicated that NPP and ET showed synchronized declines in drought periods, with time-lag effects. Furthermore, drought-induced NPP decline was larger than ET reduction. An increasing trend in WUE from the moderate to extreme drought classes occurred not only in baseline conditions but also in drought conditions. Especially in the extreme drought period (January, 2010), WUE for the forest ecosystem typically showed a positive response to drought, indicating a drought-resilient forest ecosystem. Our study has important implications for understanding climate extreme effects on the carbon and water cycle of the forest ecosystem.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/w10070821</doi><oa>free_for_read</oa></addata></record> |
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subjects | Analysis Carbon China Climate effects Computer simulation Drought Droughts Ecosystem models Environmental changes Evapotranspiration Fluxes Forest ecology Forest ecosystems Forests Hydrologic cycle Net Primary Productivity Rainfall Terrestrial ecosystems Terrestrial environments Water use |
title | Changes in the Carbon and Water Fluxes of Subtropical Forest Ecosystems in South-Western China Related to Drought |
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