Responses of LAI to rainfall explain contrasting sensitivities to carbon uptake between forest and non-forest ecosystems in Australia

被引：16

作者：

Li, Longhui ^{[1
]}

Wang, Ying-Ping ^{[2
,3
]}

Beringer, Jason ^{[4
]}

Shi, Hao ^{[1
]}

Cleverly, James ^{[1
]}

Cheng, Lei ^{[5
]}

Eamus, Derek ^{[1
]}

Huete, Alfredo ^{[1
]}

Hutley, Lindsay ^{[6
]}

Lu, Xingjie ^{[2
,3
]}

Piao, Shilong ^{[7
]}

Zhang, Lu ^{[5
]}

Zhang, Yongqiang ^{[5
]}

Yu, Qiang ^{[1
,8
]}

机构：

[1] Univ Technol Sydney, Sch Life Sci, Sydney, NSW, Australia

[2] Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China

[3] China & CSIRO Oceans & Atmosphere, PMB 1, Aspendale, Vic 3195, Australia

[4] Univ Western Australia, Sch Earth & Environm, Crawley, Australia

[5] CSIRO, Land & Water, Canberra, ACT, Australia

[6] Charles Darwin Univ, Res Inst Environm & Livelihoods, Casuarina, Australia

[7] Peking Univ, Beijing, Peoples R China

[8] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

澳大利亚研究理事会;

关键词：

SEMIARID ECOSYSTEMS; INTERANNUAL VARIABILITY; RECENT TRENDS; PRODUCTIVITY; CLIMATE; EVAPOTRANSPIRATION; PRECIPITATION; RESPIRATION; DYNAMICS; SAVANNAS;

D O I：

10.1038/s41598-017-11063-w

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：

Non-forest ecosystems (predominant in semi-arid and arid regions) contribute significantly to the increasing trend and interannual variation of land carbon uptake over the last three decades, yet the mechanisms are poorly understood. By analysing the flux measurements from 23 ecosystems in Australia, we found the the correlation between gross primary production (GPP) and ecosystem respiration (Re) was significant for non-forest ecosystems, but was not for forests. In non-forest ecosystems, both GPP and Re increased with rainfall, and, consequently net ecosystem production (NEP) increased with rainfall. In forest ecosystems, GPP and Re were insensitive to rainfall. Furthermore sensitivity of GPP to rainfall was dominated by the rainfall-driven variation of LAI rather GPP per unit LAI in non-forest ecosystems, which was not correctly reproduced by current land models, indicating that the mechanisms underlying the response of LAI to rainfall should be targeted for future model development.

引用

页数：9

共 42 条

[1] The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink [J].

Ahlstrom, Anders ;

Raupach, Michael R. ;

Schurgers, Guy ;

Smith, Benjamin ;

Arneth, Almut ;

Jung, Martin ;

Reichstein, Markus ;

Canadell, Josep G. ;

Friedlingstein, Pierre ;

Jain, Atul K. ;

Kato, Etsushi ;

Poulter, Benjamin ;

Sitch, Stephen ;

Stocker, Benjamin D. ;

Viovy, Nicolas ;

Wang, Ying Ping ;

Wiltshire, Andy ;

Zaehle, Soenke ;

Zeng, Ning .

SCIENCE, 2015, 348 (6237) :895-899

[2]

Alexandrov T, 2009, REVSTAT-STAT J, V7, P1

[3] Savanna fires and their impact on net ecosystem productivity in North Australia [J].

Beringer, Jason ;

Hutley, Lindsay B. ;

Tapper, Nigel J. ;

Cernusak, Lucas A. .

GLOBAL CHANGE BIOLOGY, 2007, 13 (05) :990-1004

[4] An introduction to the Australian and New Zealand flux tower network - OzFlux [J].

Beringer, Jason ;

Hutley, Lindsay B. ;

McHugh, Ian ;

Arndt, Stefan K. ;

Campbell, David ;

Cleugh, Helen A. ;

Cleverly, James ;

Resco de Dios, Victor ;

Eamus, Derek ;

Evans, Bradley ;

Ewenz, Cacilia ;

Grace, Peter ;

Griebel, Anne ;

Haverd, Vanessa ;

Hinko-Najera, Nina ;

Huete, Alfredo ;

Isaac, Peter ;

Kanniah, Kasturi ;

Leuning, Ray ;

Liddell, Michael J. ;

Macfarlane, Craig ;

Meyer, Wayne ;

Moore, Caitlin ;

Pendall, Elise ;

Phillips, Alison ;

Phillips, Rebecca L. ;

Prober, Suzanne M. ;

Restrepo-Coupe, Natalia ;

Rutledge, Susanna ;

Schroder, Ivan ;

Silberstein, Richard ;

Southall, Patricia ;

Yee, Mei Sun ;

Tapper, Nigel J. ;

van Gorsel, Eva ;

Vote, Camilla ;

Walker, Jeff ;

Wardlaw, Tim .

BIOGEOSCIENCES, 2016, 13 (21) :5895-5916

[5] Fire in Australian savannas: from leaf to landscape [J].

Beringer, Jason ;

Hutley, Lindsay B. ;

Abramson, David ;

Arndt, Stefan K. ;

Briggs, Peter ;

Bristow, Mila ;

Canadell, Josep G. ;

Cernusak, Lucas A. ;

Eamus, Derek ;

Edwards, Andrew C. ;

Evans, Bradley J. ;

Fest, Benedikt ;

Goergen, Klaus ;

Grover, Samantha P. ;

Hacker, Jorg ;

Haverd, Vanessa ;

Kanniah, Kasturi ;

Livesley, Stephen J. ;

Lynch, Amanda ;

Maier, Stefan ;

Moore, Caitlin ;

Raupach, Michael ;

Russell-Smith, Jeremy ;

Scheiter, Simon ;

Tapper, Nigel J. ;

Uotila, Petteri .

GLOBAL CHANGE BIOLOGY, 2015, 21 (01) :62-81

[6] Seasonal and interannual variability of climate and vegetation indices across the Amazon [J].

Brando, Paulo M. ;

Goetz, Scott J. ;

Baccini, Alessandro ;

Nepstad, Daniel C. ;

Beck, Pieter S. A. ;

Christman, Mary C. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2010, 107 (33) :14685-14690

[7]

Cai WJ, 2015, NAT CLIM CHANGE, V5, P132, DOI [10.1038/NCLIMATE2492, 10.1038/nclimate2492]

[8] Variability and recent trends in the African terrestrial carbon balance [J].

Ciais, P. ;

Piao, S. -L. ;

Cadule, P. ;

Friedlingstein, P. ;

Chedin, A. .

BIOGEOSCIENCES, 2009, 6 (09) :1935-1948

[9] Productivity and evapotranspiration of two contrasting semiarid ecosystems following the 2011 global carbon land sink anomaly [J].

Cleverly, James ;

Eamus, Derek ;

Van Gorsel, Eva ;

Chen, Chao ;

Rumman, Rizwana ;

Luo, Qunying ;

Coupe, Natalia Restrepo ;

Li, Longhui ;

Kljun, Natascha ;

Faux, Ralph ;

Yu, Qiang ;

Huete, Alfredo .

AGRICULTURAL AND FOREST METEOROLOGY, 2016, 220 :151-159

[10] The importance of interacting climate modes on Australia's contribution to global carbon cycle extremes [J].

Cleverly, James ;

Eamus, Derek ;

Luo, Qunying ;

Coupe, Natalia Restrepo ;

Kljun, Natascha ;

Ma, Xuanlong ;

Ewenz, Cacilia ;

Li, Longhui ;

Yu, Qiang ;

Huete, Alfredo .

SCIENTIFIC REPORTS, 2016, 6

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