Climate Control of Terrestrial Carbon Exchange across Biomes and Continents
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.
YI Chuixiang;
RICCIUTO Daniel;
LI Runze;
WOLBECK John;
XU Xiyuan;
NILSON Mats;
AIRES Luis;
ALBERTSON John;
AMMANN Christoph;
ARAIN Altaf M.;
C DE ARAUJO Alessandro;
AUBINET Marc;
AURELA M.;
BARCZA Zoltán;
BARR Alan G.;
BERBIGIER Paul;
BERINGER Jason;
BERNHOFER Christian;
BLACK Andrew;
BOLSTAD Paul V;
BOSVELD Fred C;
BROADMEADOW Mark S J;
BUCHMANN N.;
BURNS Sean P;
CELLIER Pierre;
CHEN Jingming;
CHEN J.;
CIAIS Philippe;
CLEMENT R.;
COOK B.;
CURTIS Peter S;
DAIL D Bryan;
DELLWIK E.;
DELPIERRE Nicolas;
DESAI Ankur R.;
DORE Sabina;
DRAGONI Danilo;
DRAKE Bert G;
DUFRÊNE Eric;
DUNN Allison;
ELBERS J.;
EUGSTER Werner;
FALK Matthias;
FEIGENWINTER Christian;
FLANAGAN Lawrence B;
FOKEN Thomas;
FRANK John;
FUHRER J.;
GIANELLE Damiano;
GOLDSTEIN Allen;
GOULDEN Michael L.;
GRANIER Andre´;
GRÜNWALD T.;
GU Lianhong;
GUO Haiqiang;
HAMMERLE Albin;
HAN Shijie;
HANAN Niall P;
HASZPRA L.;
HEINESCH Bernard;
HELFTER C.;
HENDRIKS Dimmie;
HUTLEY Lindsay B;
IBROM A;
JACOBS Cor;
JOHANSSON Torbjörn;
JONGEN Marjan;
KATUL Gabriel;
KIELY Gerard;
KLUMPP K.;
KNOHL Alexander;
KOLB Thomas;
KUTSCH Werner L.;
LAFLEUR Peter M.;
LAURILA Tuomas;
LEUNING Ray;
LINDROTH Anders;
LIU Heping;
LOUBET B.;
MANCA Govanni;
MAREK Michael;
MARGOLIS Hank;
MARTIN Timothy;
MASSMAN William J;
MATAMALA Roser;
MATTEUCCI Giorgio;
MCCAUGHEY Harry;
MERBOLD Lutz;
MEYERS Tilden;
MIGLIAVACCA Mirco;
MIGLIETTA Franco;
MISSON Laurent;
MÖLDER Melis;
MONCRIEFF John;
MONSON Russel K;
MONTAGNANI Leonardo;
MONTES-HELU Mario;
MOORS Eddy;
MOUREAUX Christine;
MUKELABAI Mukufute M;
MUNGER William J;
MYKLEBUST May;
NAGY Zoltan;
NOORMETS Asko;
OECHEL Walter;
OREN Ram;
PALLARDY Stephen G;
U Kyaw Tha Paw;
PEREIRA João S;
PILEGAARD Kim;
PINTÉR Krisztina;
PIO Casimiro;
PITA Gabriel;
POWELL Thomas L;
RAMBAL Serge;
RANDERSON James T.;
VON RANDOW Celso;
REBMANN Corinna;
RINNE Janne;
ROSSI Federica;
ROULET Nigel;
RYEL Ronald J;
SAGERFORS Jorgen;
SAIGUSA Nobuko;
SANZ María José;
MUGNOZZA Giuseppe-Scarascia;
SCHMID Hans Peter;
SEUFERT Guenther;
SIQUEIRA Mario;
SOUSSANNA Jean-François;
STARRR Gregory;
SUTTON Mark A;
TENHUNEN John;
TUBA Zoltan;
TUOVINEN Juha-Pekka;
VALENTINI Riccardo;
VOGEL Christoph S;
WANG Jingxin;
WANG Shaoqiang;
WANG Weiguo;
WELP Lisa R;
WEN Xuefa;
WHARTON Sonia;
WILKINSON Matthew;
WILLIAMS Christopher;
WOHLFAHRT Georg;
YAMAMOTO Susumu;
YU Guirui;
ZAMPEDRI Roberto;
ZHAO Bin;
ZHAO Xinquan;
2010-09-13
IOP PUBLISHING LTD
JRC54776
1748-9326,
https://iopscience.iop.org/article/10.1088/1748-9326/5/3/034007/meta,
https://publications.jrc.ec.europa.eu/repository/handle/JRC54776,
10.1088/1748-9326/5/3/034007,
Additional supporting files
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