Multi-angular instrument for tower-based observations of canopy sun-induced chlorophyll fluorescence

doi:10.1080/10739149.2019.1674326

	Multi-angular instrument for tower-based observations of canopy sun-induced chlorophyll fluorescence
	Chou, Shuren 1; Chen, Bin 2; Chen, Jing M.3,4
刊名	INSTRUMENTATION SCIENCE & TECHNOLOGY
	2020-03-03
卷号	48 期号:2 页码:146-161
关键词	Gross primary production multiple-angle remote sensing photosynthesis sun-induced chlorophyll fluorescence
ISSN号	1073-9149
DOI	10.1080/10739149.2019.1674326
通讯作者	Chen, Bin(chenbin@igsnrr.ac.cn)
英文摘要	Gross primary production (GPP) is an important component in the global carbon cycle. Sun-induced chlorophyll fluorescence (SIF) provides remotely sensible signals for monitoring GPP. The angular distribution of SIF is heterogeneous. However, SIF is usually measured from one angle only, which may not represent the canopy-scale value. In this study, a ground-based system of multi-angle observation was used to measure the SIF over the growing season of a paddy rice. This system includes two spectrometers (Ocean Optics HR4000) with the identical conditions (i.e., full width at half maxima, slits, and grating) and a cooling system. This system can monitor SIF signals continuously over plant canopies. The SIF was measured at four viewing zenith angles (VZA = 32 degrees, 42 degrees, 52 degrees, and 62 degrees) with eleven view azimuth angles (VAA = 30 degrees, 60 degrees, 90 degrees, 120 degrees, 150 degrees, 180 degrees, 210 degrees, 240 degrees, 300 degrees, 330 degrees, and 360 degrees, respectively). The ground observation of the SIF varied greatly with the angle of observation relative to the sun. The SIF values in the hotspot direction were higher (from 25% to 40%) than those in the non-hotspot direction, and the lowest SIF values appeared at the dark spot.
WOS关键词	GROSS PRIMARY PRODUCTION ; LIGHT USE EFFICIENCY ; BIDIRECTIONAL REFLECTANCE MODEL ; PRIMARY PRODUCTIVITY ; PHOTOSYNTHESIS ; PARAMETERIZATION ; SIMULATIONS ; RETRIEVAL ; PHENOLOGY ; GOME-2
WOS研究方向	Chemistry ; Instruments & Instrumentation
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000587884700003
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156517]
专题	中国科学院地理科学与资源研究所
通讯作者	Chen, Bin
作者单位	1.Space Engn Univ, Space Secur Ctr, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 3.Fujian Normal Univ, Sch Geog Sci, Fuzhou, Peoples R China 4.Univ Toronto, Dept Geog & Planning, Toronto, ON, Canada
推荐引用方式 GB/T 7714	Chou, Shuren,Chen, Bin,Chen, Jing M.. Multi-angular instrument for tower-based observations of canopy sun-induced chlorophyll fluorescence[J]. INSTRUMENTATION SCIENCE & TECHNOLOGY,2020,48(2):146-161.
APA	Chou, Shuren,Chen, Bin,&Chen, Jing M..(2020).Multi-angular instrument for tower-based observations of canopy sun-induced chlorophyll fluorescence.INSTRUMENTATION SCIENCE & TECHNOLOGY,48(2),146-161.
MLA	Chou, Shuren,et al."Multi-angular instrument for tower-based observations of canopy sun-induced chlorophyll fluorescence".INSTRUMENTATION SCIENCE & TECHNOLOGY 48.2(2020):146-161.