Title: Climate Control of Terrestrial Carbon Exchange across Biomes and Continents
Authors: YI ChuixiangRICCIUTO DanielLI RunzeWOLBECK JohnXU XiyuanNILSON MatsAIRES LuisALBERTSON JohnAMMANN ChristophARAIN Altaf M.C DE ARAUJO AlessandroAUBINET MarcAURELA M.BARCZA ZoltánBARR Alan G.BERBIGIER PaulBERINGER JasonBERNHOFER ChristianBLACK AndrewBOLSTAD Paul VBOSVELD Fred CBROADMEADOW Mark S JBUCHMANN N.BURNS Sean PCellier PierreCHEN JingmingCHEN J.CIAIS PhilippeCLEMENT R.COOK B.CURTIS Peter SDAIL D BryanDELLWIK E.DELPIERRE NicolasDESAI Ankur R.DORE SabinaDRAGONI DaniloDRAKE Bert GDUFRÊNE EricDUNN AllisonELBERS J.EUGSTER WernerFALK MatthiasFEIGENWINTER ChristianFLANAGAN Lawrence BFOKEN ThomasFRANK JohnFUHRER J.GIANELLE DamianoGOLDSTEIN AllenGOULDEN Michael L.GRANIER ANDRE´Grünwald T.GU LianhongGUO HaiqiangHAMMERLE AlbinHAN ShijieHANAN Niall PHASZPRA L.HEINESCH BernardHELFTER C.HENDRIKS DimmieHUTLEY Lindsay BIbrom AJACOBS CorJOHANSSON TorbjörnJONGEN MarjanKATUL GabrielKIELY GerardKLUMPP K.KNOHL AlexanderKOLB ThomasKUTSCH Werner L.LAFLEUR Peter M.LAURILA TuomasLEUNING RayLINDROTH AndersLIU HepingLOUBET B.MANCA GovanniMAREK MichaelMARGOLIS HankMARTIN TimothyMASSMAN William JMATAMALA RoserMATTEUCCI GiorgioMCCAUGHEY HarryMERBOLD LutzMEYERS TILDENMIGLIAVACCA MircoMIGLIETTA FRANCOMISSON LaurentMÖLDER MelisMONCRIEFF JohnMONSON Russel KMONTAGNANI LeonardoMONTES-HELU MarioMOORS EddyMOUREAUX ChristineMUKELABAI Mukufute MMUNGER William JMYKLEBUST MayNAGY ZoltanNOORMETS AskoOECHEL WalterOREN RamPALLARDY Stephen GU Kyaw Tha PawPEREIRA João SPILEGAARD KimPINTÉR KrisztinaPIO CasimiroPITA GabrielPOWELL Thomas LRAMBAL SERGERANDERSON James T.VON RANDOW CelsoREBMANN CorinnaRINNE JanneROSSI FedericaROULET NigelRYEL Ronald JSAGERFORS JorgenSAIGUSA NobukoSANZ María JoséMUGNOZZA Giuseppe-ScarasciaSCHMID Hans PeterSEUFERT GuentherSIQUEIRA MarioSoussanna Jean-FrançoisSTARRR GregorySUTTON Mark ATENHUNEN JOHNTUBA ZoltanTUOVINEN Juha-PekkaVALENTINI RiccardoVOGEL Christoph SWANG JingxinWANG ShaoqiangWANG WeiguoWELP Lisa RWEN XuefaWHARTON SoniaWILKINSON MatthewWILLIAMS ChristopherWOHLFAHRT GeorgYAMAMOTO SusumuYU GuiruiZAMPEDRI RobertoZHAO BinZHAO Xinquan
Citation: ENVIRONMENTAL RESEARCH LETTERS vol. 5 no. 3 p. 1-10
Publisher: IOP PUBLISHING LTD
Publication Year: 2010
JRC N°: JRC54776
ISSN: 1748-9326
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC54776
DOI: 10.1088/1748-9326/5/3/034007
Type: Articles in Journals
Abstract: Understanding the relationships between climate and carbon exchange by terrestrial ecosystems is critical to predicate future levels of atmospheric carbon dioxide because of the potential accelerating effects of positive climate-carbon cycle feedbacks1, 2. However, knowledge of even the broad relationships between climate and terrestrial CO2 exchange with the atmosphere on yearly to decadal scales remains highly uncertain. Here we present data describing net ecosystem exchange of carbon (NEE) and climate factors as measured using the eddy covariance method at 132 unique sites including various ecosystems over 6 continents with a total of 583 site-years. With respect to controlling factors we find two distinct groupings of sites: (1) a temperature-limited group where NEE has an exponential relationship with mean annual temperature; and (2) a dryness-limited group where NEE has an inverse exponential relationship with the dryness index7. A strong latitudinal dependence emerges, with 92% of the temperature-limited sites located above 42oN, and 77% of the dryness-limited sites located below 42oN. The sensitivity of NEE to mean annual temperature breaks down at a threshold value of ~16oC, above which no further increase of CO2 uptake with temperature was observed and dryness influence overrules temperature influence. Our findings suggest that (1) net ecosystem carbon exchange is highly limited by mean annual temperature at mid- and high-latitudes, and (2) net ecosystem carbon exchange is highly limited by dryness at low latitudes.
JRC Institute:Institute for Environment and Sustainability

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