DOI: 10.1016/j.jag.2016.07.002
Scopus记录号: 2-s2.0-84997724639
论文题名: Spectral detection of stress-related pigments in salt-lake succulent halophytic shrubs
作者: Marchesini V ; A ; , Guerschman J ; P ; , Schweiggert R ; M ; , Colmer T ; D ; , Veneklaas E ; J
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2016
卷: 52 起始页码: 457
结束页码: 463
语种: 英语
英文关键词: Betacyanin
; Chlorophyll
; Halophytes
; Inland marshes
; Plant reflectance
; Samphire
; Spectral indices
; Tecticornia auriculata
; Tecticornia indica
Scopus关键词: carotenoid
; chlorophyll
; concentration (composition)
; environmental impact assessment
; environmental monitoring
; halophyte
; marsh
; NDVI
; pigment
; saline lake
; shrub
; spectral analysis
; Crithmum maritimum
; Tecticornia
英文摘要: The spectral detection of vegetation pigment concentrations has a high potential value, but it is still underdeveloped, especially for pigments other than chlorophylls. In this study, the seasonal pigment dynamics of two Tecticornia species (samphires; halophytic shrubs) from north-western Australia were correlated with spectral indices that best document the pigment changes over time. Pigment dynamics were assessed by analysing betacyanin, chlorophyll and carotenoid concentrations at plant level and by measuring reflectance at contrasting seasonal dates. Plant reflectance was used to define a new reflectance index that was most sensitive to the seasonal shifts in Tecticornia pigment concentrations. The two Tecticornia species turned from green to red-pinkish for the period March–August 2012 when betacyanins increased almost nine times in both species. Chlorophyll levels showed the opposite pattern to that of betacyanins, whereas carotenoid levels were relatively stable. Normalised difference indices correlated well with betacyanin (r = 0.805, using bands at 600 and 620 nm) and chlorophyll (r = 0.809, using bands at 737 and 726 nm). Using knowledge of chlorophyll concentrations slightly improved the ability of the spectral index to predict betacyanin concentration (r = 0.822 at bands 606 and 620 nm, in the case of chemically determined chlorophyll, r = 0.809 when using remotely sensed chlorophyll). Our results suggest that this new spectral index can reliably detect changes in betacyanin concentrations in vegetation, with potential applications in ecological studies and environmental impact monitoring. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80032
Appears in Collections: 气候变化事实与影响
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作者单位: School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA, Australia; GEA-IMASL/CONICET, Ejército de los Andes 950, San Luis, Argentina; CSIRO Land and Water, GPO Box 1666, Canberra, ACT, Australia; Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
Recommended Citation:
Marchesini V,A,, Guerschman J,et al. Spectral detection of stress-related pigments in salt-lake succulent halophytic shrubs[J]. International Journal of Applied Earth Observation and Geoinformation,2016-01-01,52