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Reduction of structural impacts and distinction of photosynthetic pathways in a global estimation of GPP from space-borne solar-induced chlorophyll fluorescence

文献类型：期刊论文

作者Zhang, Zhaoying10,11; Zhang, Yongguang10,11,12; Porcar-Castell, Albert13; Joiner, Joanna14; Guanter, Luis1; Yang, Xi2; Migliavacca, Mirco3; Ju, Weimin10,11,12; Sun, Zhigang4,5; Chen, Shiping6
刊名REMOTE SENSING OF ENVIRONMENT
出版日期2020-04-01
卷号240页码:17
关键词Photosynthesis Photosynthetic pathway Chlorophyll fluorescence Canopy structure Spectral invariant theory
ISSN号0034-4257
DOI10.1016/j.rse.2020.111722
通讯作者Zhang, Yongguang(yongguang_zhang@nju.edu.cn)
英文摘要Quantifying global photosynthesis remains a challenge due to a lack of accurate remote sensing proxies. Solar-induced chlorophyll fluorescence (SIF) has been shown to be a good indicator of photosynthetic activity across various spatial scales. However, a global and spatially challenging estimate of terrestrial gross primary production (GPP) based on satellite SIF remains unresolved due to the confounding effects of species-specific physical and physiological traits and external factors, such as canopy structure or photosynthetic pathway (C-3 or C-4). Here we analyze an ensemble of far-red SIF data from OCO-2 satellite and ground observations at multiple sites, using the spectral invariant theory to reduce the effects of canopy structure and to retrieve a structure-corrected total canopy SIF emission (SIFtotal). We find that the relationships between observed canopy-leaving SIF and ecosystem GPP vary significantly among biomes. In contrast, the relationships between SIFtotal and GPP converge around two unique models, one for C-3 and one for C-4 plants. We show that the two single empirical models can be used to globally scale satellite SIF observations to terrestrial GPP. We obtain an independent estimate of global terrestrial GPP of 129.56 +/- 6.54 PgC/year for the 2015-2017 period, which is consistent with the state-of-the-art data- and process-oriented models. The new GPP product shows improved sensitivity to previously undetected 'hotspots' of productivity, being able to resolve the double-peak in GPP due to rotational cropping systems. We suggest that the direct scheme to estimate GPP presented here, which is based on satellite SIF, may open up new possibilities to resolve the dynamics of global terrestrial GPP across space and time.
WOS关键词SUN-INDUCED FLUORESCENCE ; GROSS PRIMARY PRODUCTION ; NET ECOSYSTEM EXCHANGE ; CARBON-DIOXIDE ; CANOPY PHOTOSYNTHESIS ; PRIMARY PRODUCTIVITY ; FEEDBACK MECHANISM ; ENERGY FLUXES ; CO2 UPTAKE ; MODEL
资助项目National Key Research and Development Program of China[2019YFA0606601] ; NSFC[41761134082] ; DFG[41761134082] ; General Program of National Science Foundation of China[41671421] ; Academy of Finland[288039] ; European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant[721995] ; Alexander von Humboldt foundation through the Max Planck Research Prize ; NASA through the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program ; Innovative and Practical Program of Graduate Student in Jiangsu Province[SJKY190037] ; CDIAC ; ICOS Ecosystem Thematic Center ; OzFlux office ; ChinaFlux office ; AsiaFlux office ; USDA ARS ; NSF[EAR 1331872]
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:000523955300033
出版者ELSEVIER SCIENCE INC
资助机构National Key Research and Development Program of China ; NSFC ; DFG ; General Program of National Science Foundation of China ; Academy of Finland ; European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant ; Alexander von Humboldt foundation through the Max Planck Research Prize ; NASA through the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program ; Innovative and Practical Program of Graduate Student in Jiangsu Province ; CDIAC ; ICOS Ecosystem Thematic Center ; OzFlux office ; ChinaFlux office ; AsiaFlux office ; USDA ARS ; NSF
源URL[http://ir.igsnrr.ac.cn/handle/311030/133879]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Yongguang
作者单位1.Univ Politecn Valencia, Ctr Tecnol Fis, Cami Vera S-N, E-46022 Valencia, Spain
2.Univ Virginia, Dept Environm Sci, Charlottesville, VA 22904 USA
3.Max Planck Inst Biogeochem, Hans Knoell Str 10, D-07745 Jena, Germany
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
6.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
7.Univ Technol Sydney, Sch Life Sci, Terr Ecosyst Res Network, Broadway, NSW 2007, Australia
8.UPMC Univ Paris 06, Univ Paris Saclay, Sorbonne Univ, LMD IPSL,CNRS,ENS,PSL Res Univ,Ecole Polytech, F-91128 Palaiseau, France
9.Chinese Acad Agr Sci, Farmland Irrigat Res Inst, Xinxiang, Henan, Peoples R China
10.Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Zhaoying,Zhang, Yongguang,Porcar-Castell, Albert,et al. Reduction of structural impacts and distinction of photosynthetic pathways in a global estimation of GPP from space-borne solar-induced chlorophyll fluorescence[J]. REMOTE SENSING OF ENVIRONMENT,2020,240:17.
APA Zhang, Zhaoying.,Zhang, Yongguang.,Porcar-Castell, Albert.,Joiner, Joanna.,Guanter, Luis.,...&Goulas, Yves.(2020).Reduction of structural impacts and distinction of photosynthetic pathways in a global estimation of GPP from space-borne solar-induced chlorophyll fluorescence.REMOTE SENSING OF ENVIRONMENT,240,17.
MLA Zhang, Zhaoying,et al."Reduction of structural impacts and distinction of photosynthetic pathways in a global estimation of GPP from space-borne solar-induced chlorophyll fluorescence".REMOTE SENSING OF ENVIRONMENT 240(2020):17.

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来源：地理科学与资源研究所

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