气候变化领域集成服务门户(CCPortal): Evaluation of terrestrial carbon cycle models for their response to climate variability and to CO2 trends

CCPortal

DOI	10.1111/gcb.12187
	Evaluation of terrestrial carbon cycle models for their response to climate variability and to CO2 trends
	Piao, Shilong; Sitch, Stephen; Ciais, Philippe; Friedlingstein, Pierre; Peylin, Philippe; Wang, Xuhui; Ahlstrom, Anders; Anav, Alessandro; Canadell, Josep G.; Cong, Nan; Huntingford, Chris; Jung, Martin; Levis, Sam; Levy, Peter E.; Li, Junsheng; Lin, Xin; Lomas, Mark R.; Lu, Meng; Luo, Yiqi; Ma, Yuecun; Myneni, Ranga B.; Poulter, Ben; Sun, Zhenzhong; Wang, Tao; Viovy, Nicolas; Zaehle, Soenke; Zeng, Ning
通讯作者	Piao, SL (通讯作者)
发表日期	2013
ISSN	1354-1013
EISSN	1365-2486
起始页码	2117
结束页码	2132
卷号	19 期号:7
英文摘要	The purpose of this study was to evaluate 10 process-based terrestrial biosphere models that were used for the IPCC fifth Assessment Report. The simulated gross primary productivity (GPP) is compared with flux-tower-based estimates by Jung etal. [Journal of Geophysical Research 116 (2011) G00J07] (JU11). The net primary productivity (NPP) apparent sensitivity to climate variability and atmospheric CO2 trends is diagnosed from each model output, using statistical functions. The temperature sensitivity is compared against ecosystem field warming experiments results. The CO2 sensitivity of NPP is compared to the results from four Free-Air CO2 Enrichment (FACE) experiments. The simulated global net biome productivity (NBP) is compared with the residual land sink (RLS) of the global carbon budget from Friedlingstein etal. [Nature Geoscience 3 (2010) 811] (FR10). We found that models produce a higher GPP (133 +/- 15Pg Cyr-1) than JU11 (118 +/- 6Pg Cyr-1). In response to rising atmospheric CO2 concentration, modeled NPP increases on average by 16% (5-20%) per 100ppm, a slightly larger apparent sensitivity of NPP to CO2 than that measured at the FACE experiment locations (13% per 100ppm). Global NBP differs markedly among individual models, although the mean value of 2.0 +/- 0.8Pg Cyr-1 is remarkably close to the mean value of RLS (2.1 +/- 1.2 Pg Cyr-1). The interannual variability in modeled NBP is significantly correlated with that of RLS for the period 1980-2009. Both model-to-model and interannual variation in model GPP is larger than that in model NBP due to the strong coupling causing a positive correlation between ecosystem respiration and GPP in the model. The average linear regression slope of global NBP vs. temperature across the 10 models is -3.0 +/- 1.5Pg Cyr-1 degrees C-1, within the uncertainty of what derived from RLS (-3.9 +/- 1.1Pg Cyr-1 degrees C-1). However, 9 of 10 models overestimate the regression slope of NBP vs. precipitation, compared with the slope of the observed RLS vs. precipitation. With most models lacking processes that control GPP and NBP in addition to CO2 and climate, the agreement between modeled and observation-based GPP and NBP can be fortuitous. Carbon-nitrogen interactions (only separable in one model) significantly influence the simulated response of carbon cycle to temperature and atmospheric CO2 concentration, suggesting that nutrients limitations should be included in the next generation of terrestrial biosphere models.
关键词	NITROGEN INTERACTIONS LAND-USE INTERANNUAL VARIABILITY PRIMARY PRODUCTIVITY VEGETATION DYNAMICS PLANT GEOGRAPHY TREE GROWTH ECOSYSTEM FOREST DROUGHT
英文关键词	carbon cycle; CO2 fertilization; model evaluation; precipitation sensitivity; temperature sensitivity
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000319963500012
来源期刊	GLOBAL CHANGE BIOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258247
推荐引用方式 GB/T 7714	Piao, Shilong,Sitch, Stephen,Ciais, Philippe,et al. Evaluation of terrestrial carbon cycle models for their response to climate variability and to CO2 trends[J]. 中国科学院青藏高原研究所,2013,19(7).
APA	Piao, Shilong.,Sitch, Stephen.,Ciais, Philippe.,Friedlingstein, Pierre.,Peylin, Philippe.,...&Zeng, Ning.(2013).Evaluation of terrestrial carbon cycle models for their response to climate variability and to CO2 trends.GLOBAL CHANGE BIOLOGY,19(7).
MLA	Piao, Shilong,et al."Evaluation of terrestrial carbon cycle models for their response to climate variability and to CO2 trends".GLOBAL CHANGE BIOLOGY 19.7(2013).