IGSNRR OpenIR
Comparative Analysis on the Estimation of Diurnal Solar-Induced Chlorophyll Fluorescence Dynamics for a Subtropical Evergreen Coniferous Forest
Chen, Jinghua1; Wang, Shaoqiang1,2,3; Chen, Bin1,2; Li, Yue4; Amir, Muhammad1,2; Ma, Li1,2; Zhu, Kai1,2; Yang, Fengting1,2; Wang, Xiaobo1,2; Liu, Yuanyuan1,2; Wang, Pengyuan1,2; Wang, Junbang1,2; Huang, Mei1,2; Wang, Zhaosheng1,2
2021-08-01
Source PublicationREMOTE SENSING
Volume13Issue:16Pages:18
Corresponding AuthorWang, Shaoqiang(sqwang@igsnrr.ac.cn)
AbstractSolar-induced chlorophyll fluorescence (SIF) is considered as a prospective indicator of vegetation photosynthetic activity and the ecosystem carbon cycle. The current coarse spatial-temporal resolutions of SIF data from satellite missions and ground measurements still cannot satisfy the corroboration of its correlation with photosynthesis and carbon flux. Practical approaches are needed to be explored for the supplementation of the SIF measurements. In our study, we clarified the diurnal variations of leaf and canopy chlorophyll fluorescence for a subtropical evergreen coniferous forest and evaluated the performance of the canopy chlorophyll concentration (CCC) approach and the backward approach from gross primary production (GPP) for estimating the diurnal variations of canopy SIF by comparing with the Soil Canopy Observation Photosynthesis Energy (SCOPE) model. The results showed that the canopy SIF had similar seasonal and diurnal variations with the incident photosynthetically active radiation (PAR) above the canopy, while the leaf steady-state fluorescence remained stable during the daytime. Neither the CCC nor the raw backward approach from GPP could capture the short temporal dynamics of canopy SIF. However, after improving the backward approach with a correction factor of normalized PAR incident on leaves, the variation of the estimated canopy SIF accounted for more than half of the diurnal variations in the canopy SIF (SIF687: R-2 = 0.53, p < 0.001; SIF760: R-2 = 0.72, p < 0.001) for the subtropical evergreen coniferous forest without water stress. Drought interfered with the utilization of the improved backward approach because of the decoupling of SIF and GPP due to stomatal closure. This new approach offers new insight into the estimation of diurnal canopy SIF and can help understand the photosynthesis of vegetation for future climate change studies.
Keywordchlorophyll fluorescence model comparison SCOPE model evergreen conifer water stress
DOI10.3390/rs13163143
WOS KeywordWATER-STRESS ; SATELLITE MEASUREMENTS ; SEASONAL DROUGHT ; STEADY-STATE ; PHOTOSYNTHESIS ; CANOPY ; MODEL ; TEMPERATURE ; RETRIEVAL ; LEAF
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0503803] ; National Natural Science Foundation of China[41871342]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000689804800001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/165169
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Shaoqiang
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.China Univ Geosci, Sch Geog & Informat Engn, Wuhan 430074, Peoples R China
4.Hebei Univ Engn, Sch Earth Sci & Engn, Handan 056038, Peoples R China
Recommended Citation
GB/T 7714
Chen, Jinghua,Wang, Shaoqiang,Chen, Bin,et al. Comparative Analysis on the Estimation of Diurnal Solar-Induced Chlorophyll Fluorescence Dynamics for a Subtropical Evergreen Coniferous Forest[J]. REMOTE SENSING,2021,13(16):18.
APA Chen, Jinghua.,Wang, Shaoqiang.,Chen, Bin.,Li, Yue.,Amir, Muhammad.,...&Wang, Zhaosheng.(2021).Comparative Analysis on the Estimation of Diurnal Solar-Induced Chlorophyll Fluorescence Dynamics for a Subtropical Evergreen Coniferous Forest.REMOTE SENSING,13(16),18.
MLA Chen, Jinghua,et al."Comparative Analysis on the Estimation of Diurnal Solar-Induced Chlorophyll Fluorescence Dynamics for a Subtropical Evergreen Coniferous Forest".REMOTE SENSING 13.16(2021):18.
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