DOI: 10.1016/j.jag.2013.01.005
Scopus记录号: 2-s2.0-84880112456
论文题名: Hyperspectral reflectance of leaves and flowers of an outbreak species discriminates season and successional stage of vegetation
作者: Carvalho S ; , Schlerf M ; , van der Puttena W ; H ; , Skidmore A ; K
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2013
卷: 24, 期: 1 起始页码: 32
结束页码: 41
语种: 英语
英文关键词: Chlorophyll
; Jacobaea vulgaris
; Nitrogen
; Old field succession
; Plant chemical defence
; Pyrrolizidine alkaloids
; Senecio jacobaea
Scopus关键词: aboveground biomass
; arable land
; belowground biomass
; chemical defense
; chronosequence
; flower
; leaf
; multivariate analysis
; nutrient dynamics
; old field
; performance assessment
; phenology
; plant defense
; remote sensing
; spectral reflectance
; succession
; Europe
英文摘要: Spectral reflectance can be used to assess large-scale performances of plants in the field based on plant nutrient balance as well as composition of defence compounds. However, plant chemical composition is known to vary with season - due to its phenology - and it may even depend on the succession stage of its habitat. Here we investigate (i) how spectral reflectance could be used to discriminate successional and phenological stages of Jacobaea vulgaris in both leaf and flower organs and (ii) if chemical content estimation by reflectance is flower or leaf dependent. We used J. vulgaris, which is a natural outbreak plant species on abandoned arable fields in northwestern Europe and studied this species in a chronosequence representing successional development during time since abandonment. The chemical content and reflectance between 400 and 2500 nm wavelengths of flowers and leaves were measured throughout the season in fields of different successional ages. The data were analyzed with multivariate statistics for temporal discrimination and estimation of chemical contents in both leaf and flower organs. Two main effects were revealed by spectral reflectance measurements: (i) both flower and leaf spectra show successional and seasonal changes, but the pattern is complex and organ specific (ii) flower head pyrrolizidine alkaloids, which are involved in plant defence against herbivores, can be detected through hyperspectral reflectance.We conclude that spectral reflectance of both leaves and flowers can provide information on plant performance during season and successional stages. As a result, remote sensing studies of plant performance in complex field situations will benefit from considering hyperspectral reflectance of different plant organs. This approach may enable more detailed studies on the link between spectral information and plant defence dynamics both aboveground and belowground. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79868
Appears in Collections: 气候变化事实与影响
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作者单位: Netherlands Institute of Ecology (NIOO-KNAW), PO Box 50, 6700 AB Wageningen, Netherlands; Public Research Centre Gabriel Lippmann, 41, rue du Brill, L-4422 Belvaux, Netherlands; University of Twente, PO Box 6, 7500 AA Enschede, Netherlands; Laboratory of Nematology, Wageningen University, PO Box 8123, 6700 ES, Netherlands
Recommended Citation:
Carvalho S,, Schlerf M,, van der Puttena W,et al. Hyperspectral reflectance of leaves and flowers of an outbreak species discriminates season and successional stage of vegetation[J]. International Journal of Applied Earth Observation and Geoinformation,2013-01-01,24(1)