光谱学与光谱分析 |
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Monitoring Spatio-Temporal Spectral Characteristics of Leaves of Karst Plant during Dehydration Using a Field Imaging Spectrometer System |
LIU Bo1, TONG Qing-xi2, ZHANG Li-fu2, ZHANG Xia2, YUE Yue-min3*, ZHANG Bing4 |
1. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China 2. Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China 3. Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China 4. Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China |
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Abstract As the supplement of spaceborne and airborne imaging spectrometer system, field Imaging spectrometer system spans a very broad range of applications. Imaging spectrometer system of this new kind could provide vital information especially for which spaceborne or airborne remote sensing could not be competent, such as proximal detection of plant population, individual plant or plant organs for site-specific management in precision agriculture. A new self-developed imaging spectrometer system was utilized to monitor spatio-temporal dynamics of spectral changes of plant leaves in response to dehydration. The phenomenon of blue shift of red edge of plant leaves was successfully detected and visualized in the form of image series. The patterns of photochemical reflectance index(PRI) of leaves during dehydration were compared and confirmed by fluorescence parameter quantum yield. Our results show that FISS has good spectral and radiometric properties and could be used in quantitative researches and precise information mapping.
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Received: 2011-11-26
Accepted: 2012-03-10
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Corresponding Authors:
YUE Yue-min
E-mail: hnyym829@163.com
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