Global parameterization and validation of a two-leaf light use efficiency model for predicting gross primary production across FLUXNET sites

	Global parameterization and validation of a two-leaf light use efficiency model for predicting gross primary production across FLUXNET sites
	Zhou, Yanlian ; Wu, Xiaocui ; Ju, Weimin ; Chen, Jing M. ; Wang, Shaoqiang ; Wang, Huimin ; Yuan, Wenping ; Black, T. Andrew ; Jassal, Rachhpal ; Ibrom, Andreas ; Han, Shijie ; Yan, Junhua ; Margolis, Hank ; Roupsard, Olivier ; Li, Yingnian ; Zhao, Fenghua ; Kiely, Gerard ; Starr, Gregory ; Pavelka, Marian ; Montagnani, Leonardo ; Wohlfahrt, Georg ; D'Odorico, Petra ; Cook, David ; Arain, M. Altaf ; Bonal, Damien ; Beringer, Jason ; Blanken, Peter D. ; Loubet, Benjamin ; Leclerc, Monique Y. ; Matteucci, Giorgio ; Nagy, Zoltan ; Olejnik, Janusz ; U, Kyaw Tha Paw ; Varlagin, Andrej
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
	2016-04-01
英文摘要	Light use efficiency (LUE) models are widely used to simulate gross primary production (GPP). However, the treatment of the plant canopy as a big leaf by these models can introduce large uncertainties in simulated GPP. Recently, a two-leaf light use efficiency (TL-LUE) model was developed to simulate GPP separately for sunlit and shaded leaves and has been shown to outperform the big-leaf MOD17 model at six FLUX sites in China. In this study we investigated the performance of the TL-LUE model for a wider range of biomes. For this we optimized the parameters and tested the TL-LUE model using data from 98 FLUXNET sites which are distributed across the globe. The results showed that the TL-LUE model performed in general better than the MOD17 model in simulating 8 day GPP. Optimized maximum light use efficiency of shaded leaves (epsilon(msh)) was 2.63 to 4.59 times that of sunlit leaves (epsilon(msu)). Generally, the relationships of epsilon(msh) and epsilon(msu) with epsilon(max) were well described by linear equations, indicating the existence of general patterns across biomes. GPP simulated by the TL-LUE model was much less sensitive to biases in the photosynthetically active radiation (PAR) input than the MOD17 model. The results of this study suggest that the proposed TL-LUE model has the potential for simulating regional and global GPP of terrestrial ecosystems, and it is more robust with regard to usual biases in input data than existing approaches which neglect the bimodal within-canopy distribution of PAR.
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/6483]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zhou, Yanlian,Wu, Xiaocui,Ju, Weimin,et al. Global parameterization and validation of a two-leaf light use efficiency model for predicting gross primary production across FLUXNET sites[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2016.
APA	Zhou, Yanlian.,Wu, Xiaocui.,Ju, Weimin.,Chen, Jing M..,Wang, Shaoqiang.,...&Varlagin, Andrej.(2016).Global parameterization and validation of a two-leaf light use efficiency model for predicting gross primary production across FLUXNET sites.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES.
MLA	Zhou, Yanlian,et al."Global parameterization and validation of a two-leaf light use efficiency model for predicting gross primary production across FLUXNET sites".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES (2016).