Rapid Determination of Leaf Water Content Using VISNIR Spectroscopy Analysis with Wavelength Selection
Joint Authors
Zhang, Qianxuan
Li, Qingbo
Zhang, Guangjun
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-28
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Water content in plants is one of the most common biochemical parameters limiting efficiency of photosynthesis and crop productivity.
Therefore, it has very important meaning to predict the water content rapidly and nondestructively.
The objective of this study was to investigate the feasibility of detecting the water content in the leaf using the diffuse reflectance spectra limited in the VIS/NIR region (400–1100 nm), which could be used to determine other biochemical parameters such as chlorophyll and nitrogen content.
The experiment with leaves in different water stress was conducted.
The statistical test result indicated that the determination of water content in leaf could be successfully performed by VIS/NIR spectroscopy combined with chemometrics method.
The performances of different pretreatment methods were compared.
The model with best performance was obtained from the first derivative spectra.
In order to make the calibration model more parsimonious and stable, a hybrid wavelength selection method was proposed to extract the efficient feature wavelength.
Under the optimal condition, an RMSEP of 0.73% with 25 variables was obtained for water content prediction using extern validation.
The conclusions presented could lead to the development of portable instrument for synchronous detecting water content and other biochemical parameters rapidly and nondestructively.
American Psychological Association (APA)
Zhang, Qianxuan& Li, Qingbo& Zhang, Guangjun. 2012. Rapid Determination of Leaf Water Content Using VISNIR Spectroscopy Analysis with Wavelength Selection. Journal of Spectroscopy،Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-998744
Modern Language Association (MLA)
Zhang, Qianxuan…[et al.]. Rapid Determination of Leaf Water Content Using VISNIR Spectroscopy Analysis with Wavelength Selection. Journal of Spectroscopy No. 2012 (2012), pp.1-13.
https://search.emarefa.net/detail/BIM-998744
American Medical Association (AMA)
Zhang, Qianxuan& Li, Qingbo& Zhang, Guangjun. Rapid Determination of Leaf Water Content Using VISNIR Spectroscopy Analysis with Wavelength Selection. Journal of Spectroscopy. 2012. Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-998744
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-998744