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A SIF-based approach for quantifying canopy photosynthesis by simulating the fraction of open PSII reaction centers (qL)

文献类型：期刊论文

作者Liu, Zhunqiao7; Guo, Chenhui6; Yu, Qiang5,7; Zhu, Peng3,4; Peng, Xiongbiao1,2; Dong, Mengqi1,2; Cai, Huanjie1,2; Lu, Xiaoliang7
刊名REMOTE SENSING OF ENVIRONMENT
出版日期2024-05-01
卷号305页码:19
关键词Solar-induced chlorophyll fluorescence (SIF) Quantification Gross primary productivity (GPP) The fraction of open PSII reaction centers(qL) SIF-based approach
ISSN号0034-4257
DOI10.1016/j.rse.2024.114111
英文摘要Advances in retrieval of solar-induced chlorophyll fluorescence (SIF) provide a promising and independent approach for quantifying gross primary production (GPP) across spatial scales. Recent studies have highlighted the prominent role of qL, the fraction of open Photosystem II (PSII) reaction centers, in mechanistically modeling GPP from remote sensing SIF. However, due to the limited availability of simulated and experimental data, a comprehensive understanding of qL responses to environmental and physiological variations has yet to emerge, and as a consequence, prediction of qL across leaf and canopy scales is still in an early stage. Based on a global sensitivity analysis of a recently developed mechanical model of photosynthesis, we find that the broadband total SIF emitted from PSII (SIFTOT_FULL_PSII) and leaf temperature (TLeaf) are the two major predictors of qL. A leaf-level instrument is designed to obtain concurrent measurements of qL, SIFTOT_FULL_PSII, and TLeaf over a wide range of environmental conditions. From these measurements, we show that qL can be modelled as a hyperbolic function of SIFTOT_FULL_PSII with only one temperature-related parameter m which increases with temperature, but decreases rapidly as temperatures exceed the optimum temperature. It is suggested that m can be mathematically modelled by a peaked function. The results of the leaf-level experiments on winter wheat demonstrate that the proposed model predicts qL with high accuracy (R2 >= 0.91, rRMSE <= 8.46%) under diverse light and temperature conditions. The essential steps necessary to apply it at canopy scale, including estimating the escape fraction, removing fluorescence emitted from Photosystem I, and reconstructing SIFTOT_FULL_PSII from top-of-canopy (TOC) narrowband SIF, are also presented. Our results confirm that estimated GPP using SIF-informed qL agrees well with measured GPP at a winter wheat site (R2 = 0.81, rRMSE = 12.03%). The key benefit of SIF-informed approach is that SIFTOT_FULL_PSII provides critical information on the collective influence of the sub-canopy light environment on qL, avoiding the requirement to explicitly estimate qL at different canopy depths, potentially promoting the ability of SIF to mechanistically quantify photosynthetic CO2 assimilation at large scales.
WOS关键词INDUCED CHLOROPHYLL FLUORESCENCE ; QUANTUM YIELD ; HIGH LIGHT ; TEMPERATURE-DEPENDENCE ; ARABIDOPSIS-THALIANA ; EXCITATION-ENERGY ; A FLUORESCENCE ; PHOTOSYSTEM-I ; LEAVES ; MODEL
资助项目National Natural Science Foundation of China[42071328] ; National Natural Science Foundation of China[41901293] ; National Natural Science Foundation of China[52179046] ; Chinese Universities Scientific Fund[24520212452021125] ; Fundamental Research Funds for the Central Universities[2452023027]
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:001218301100001
出版者ELSEVIER SCIENCE INC
资助机构National Natural Science Foundation of China ; Chinese Universities Scientific Fund ; Fundamental Research Funds for the Central Universities
源URL[http://ir.igsnrr.ac.cn/handle/311030/205847]  
专题陆地水循环及地表过程院重点实验室_外文论文
通讯作者Lu, Xiaoliang
作者单位1.Northwest A&F Univ, Inst Water Saving Agr Arid Reg China IWSA, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid Area, Minist Educ, Yangling 712100, Shaanxi, Peoples R China
3.Univ Hong Kong, Inst Climate & Carbon Neutral, Hong Kong, Peoples R China
4.Univ Hong Kong, Dept Surg, Hong Kong, Peoples R China
5.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
6.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
7.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Zhunqiao,Guo, Chenhui,Yu, Qiang,et al. A SIF-based approach for quantifying canopy photosynthesis by simulating the fraction of open PSII reaction centers (qL)[J]. REMOTE SENSING OF ENVIRONMENT,2024,305:19.
APA Liu, Zhunqiao.,Guo, Chenhui.,Yu, Qiang.,Zhu, Peng.,Peng, Xiongbiao.,...&Lu, Xiaoliang.(2024).A SIF-based approach for quantifying canopy photosynthesis by simulating the fraction of open PSII reaction centers (qL).REMOTE SENSING OF ENVIRONMENT,305,19.
MLA Liu, Zhunqiao,et al."A SIF-based approach for quantifying canopy photosynthesis by simulating the fraction of open PSII reaction centers (qL)".REMOTE SENSING OF ENVIRONMENT 305(2024):19.

入库方式： OAI收割

来源：地理科学与资源研究所

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