Simulating solar-induced chlorophyll fluorescence in a boreal forest stand reconstructed from terrestrial laser scanning measurements

doi:10.1016/j.rse.2019.111274

	Simulating solar-induced chlorophyll fluorescence in a boreal forest stand reconstructed from terrestrial laser scanning measurements
	Liu, Weiwei 2,3,4; Atherton, Jon 4; Mottus, Matti 5; Gastellu-Etchegorry, Jean-Philippe 6; Malenovsky, Zbynek 7; Raumonen, Pasi 1; Akerblom, Markku 1; Makipaa, Raisa 8; Porcar-Castell, Albert 4
刊名	REMOTE SENSING OF ENVIRONMENT
	2019-10-01
卷号	232 页码:15
关键词	Boreal forest Silver birch LiDAR DART Solar-induced chlorophyll fluorescence Red SIF Far-red SIF Understory TreeQSM FaNNI
ISSN号	0034-4257
DOI	10.1016/j.rse.2019.111274
通讯作者	Liu, Weiwei(lww@lreis.ac.cn)
英文摘要	Solar-induced chlorophyll fluorescence (SIF) has been shown to be a suitable remote sensing proxy of photosynthesis at multiple scales. However, the relationship between fluorescence and photosynthesis observed at the leaf level cannot be directly applied to the interpretation of retrieved SIF due to the impact of canopy structure. We carried out a SIF modelling study for a heterogeneous forest canopy considering the effect of canopy structure in the Discrete Anisotropic Radiative Transfer (DART) model. A 3D forest simulation scene consisting of realistic trees and understory, including multi-scale clumping at branch and canopy level, was constructed from terrestrial laser scanning data using the combined model TreeQSM and FaNNI for woody structure and leaf insertion, respectively. Next, using empirical data and a realistic range of leaf-level biochemical and physiological parameters, we conducted a local sensitivity analysis to demonstrate the potential of the approach for assessing the impact of structural, biochemical and physiological factors on top of canopy (TOC) SIF. The analysis gave insight into the factors that drive the intensity and spectral properties of TOC SIF in heterogeneous boreal forest canopies. DART simulated red TOC fluorescence was found to be less affected by biochemical factors such as chlorophyll and dry matter contents or the senescent factor than far-red fluorescence. In contrast, canopy structural factors such as overstory leaf area index (LAI), leaf angle distribution and fractional cover had a substantial and comparable impact across all SIF wavelengths, with the exception of understory LAI that affected predominantly far-red fluorescence. Finally, variations in the fluorescence quantum efficiency (Fqe) of photosystem II affected all TOC SIF wavelengths. Our results also revealed that not only canopy structural factors but also understory fluorescence should be considered in the interpretation of tower, airborne and satellite SIF datasets, especially when acquired in the (near-) nadir viewing direction and for forests with open canopies. We suggest that the modelling strategy introduced in this study, coupled with the increasing availability of TLS and other 3D data sources, can be applied to resolve the interplay between physiological, biochemical and structural factors affecting SIF across ecosystems and independently of canopy complexity, paving the way for future SIF-based 3D photosynthesis models.
资助项目	UCAS[UCAS [2015] 37] ; Academy of Finland[293443] ; Academy of Finland[288039] ; Academy of Finland[266152] ; Academy of Finland[317387] ; Australian Research Council[FT160100477]
WOS关键词	GROSS PRIMARY PRODUCTION ; CANOPY REFLECTANCE ; VEGETATION FLUORESCENCE ; PHOTOSYNTHETIC CAPACITY ; PIGMENT COMPOSITION ; LIGHT-SCATTERING ; LEAF ; MODEL ; TEMPERATE ; EMISSION
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000486355300062
资助机构	UCAS ; Academy of Finland ; Australian Research Council
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/129558]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Weiwei
作者单位	1.Tampere Univ Technol, Lab Math, POB 692, FI-33101 Tampere, Finland 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, LREIS, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Helsinki, Opt Photosynth Lab, Inst Atmospher & Earth Syst Res INAR Forest Sci, POB 27, FIN-00014 Helsinki, Finland 5.VTT, VTT Tech Res Ctr Finland, POB 1000, Espoo 02044, Finland 6.Univ Paul Sabatier, Ctr Study Biosphere Space CESBIO, CNRS, CNES,IRD,Univ Toulouse, 18 Ave Edouard Belin, F-31401 Toulouse, France 7.Univ Tasmania, Sch Technol Environm & Design, Geog & Spatial Sci, Private Bag 76, Hobart, Tas 7001, Australia 8.Nat Resources Inst Finland, Latokartanonkaari 9, FI-00790 Helsinki, Finland
推荐引用方式 GB/T 7714	Liu, Weiwei,Atherton, Jon,Mottus, Matti,et al. Simulating solar-induced chlorophyll fluorescence in a boreal forest stand reconstructed from terrestrial laser scanning measurements[J]. REMOTE SENSING OF ENVIRONMENT,2019,232:15.
APA	Liu, Weiwei.,Atherton, Jon.,Mottus, Matti.,Gastellu-Etchegorry, Jean-Philippe.,Malenovsky, Zbynek.,...&Porcar-Castell, Albert.(2019).Simulating solar-induced chlorophyll fluorescence in a boreal forest stand reconstructed from terrestrial laser scanning measurements.REMOTE SENSING OF ENVIRONMENT,232,15.
MLA	Liu, Weiwei,et al."Simulating solar-induced chlorophyll fluorescence in a boreal forest stand reconstructed from terrestrial laser scanning measurements".REMOTE SENSING OF ENVIRONMENT 232(2019):15.