The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink

被引：1179

作者：

Ahlstrom, Anders ^{[1
,2
]}

Raupach, Michael R. ^{[3
]}

Schurgers, Guy ^{[4
]}

Smith, Benjamin ^{[1
]}

Arneth, Almut ^{[5
]}

Jung, Martin ^{[6
]}

Reichstein, Markus ^{[6
]}

Canadell, Josep G. ^{[7
]}

Friedlingstein, Pierre ^{[8
]}

Jain, Atul K. ^{[9
]}

Kato, Etsushi ^{[10
]}

Poulter, Benjamin ^{[11
,12
]}

Sitch, Stephen ^{[13
]}

Stocker, Benjamin D. ^{[14
,15
,16
]}

Viovy, Nicolas ^{[17
]}

Wang, Ying Ping ^{[18
]}

Wiltshire, Andy ^{[19
]}

Zaehle, Soenke

Zeng, Ning ^{[20
,21
]}

机构：

[1] Lund Univ, Dept Phys Geog & Ecosyst Sci, S-22362 Lund, Sweden

[2] Stanford Univ, Sch Earth Energy & Environm Sci, Dept Earth Syst Sci, Stanford, CA 94305 USA

[3] Australian Natl Univ, Climate Change Inst, Canberra, ACT 0200, Australia

[4] Univ Copenhagen, Dept Geosci & Nat Resource Management, DK-1350 Copenhagen, Denmark

[5] Karlsruhe Inst Technol, Inst Meteorol & Climate Research Atmospher Enviro, D-82476 Garmisch Partenkirchen, Germany

[6] Max Planck Inst Biogeochem, Biogeochem Intergrat Dept, D-07745 Jena, Germany

[7] CSIRO Oceans & Atmospher Flagship, Global Carbon Project, Canberra, ACT, Australia

[8] Univ Exeter, Coll Engn Math & Phys Sci, Exeter EX4 4QF, Devon, England

[9] Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA

[10] Inst Appl Energy, Tokyo 1050003, Japan

[11] Montana State Univ, Inst Ecosyst, Bozeman, MT 59717 USA

[12] Montana State Univ, Dept Ecol, Bozeman, MT 59717 USA

[13] Univ Exeter, Coll Life & Environm Sci, Exeter EX4 4RJ, Devon, England

[14] Univ London Imperial Coll Sci Technol & Med, Dept Life Sci, Ascot SL5 7PY, Berks, England

[15] Univ Bern, Inst Phys, Climate & Environm Phys, Bern, Switzerland

[16] Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland

[17] CEA Saclay, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France

[18] CSIRO Ocean & Atmosphere Flagship, Aspendale, Vic 3195, Australia

[19] Met Off Hadley Ctr, Exeter EX1 3PB, Devon, England

[20] Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA

[21] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA

来源：

SCIENCE | 2015年 / 348卷 / 6237期

基金：

瑞典研究理事会; 美国国家科学基金会;

关键词：

CARBON-CYCLE; TERRESTRIAL BIOSPHERE; VEGETATION DYNAMICS; CLIMATE; SENSITIVITY; GREENNESS; EXTREMES; DIOXIDE; EVENTS;

D O I：

10.1126/science.aaa1668

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The growth rate of atmospheric carbon dioxide (CO2) concentrations since industrialization is characterized by large interannual variability, mostly resulting from variability in CO2 uptake by terrestrial ecosystems (typically termed carbon sink). However, the contributions of regional ecosystems to that variability are not well known. Using an ensemble of ecosystem and land-surface models and an empirical observation-based product of global gross primary production, we show that the mean sink, trend, and interannual variability in CO2 uptake by terrestrial ecosystems are dominated by distinct biogeographic regions. Whereas the mean sink is dominated by highly productive lands (mainly tropical forests), the trend and interannual variability of the sink are dominated by semi- arid ecosystems whose carbon balance is strongly associated with circulation- driven variations in both precipitation and temperature.

引用

页码：895 / 899

页数：5

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