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9 November 2012Temporal and spatial variation of canopy spectral characteristics in apple orchard
Plant nutritional status can be evaluated with remote sensing. In order to detect the temporal and spatial variation of
spectral characteristics in apple orchard, the experiments were carried out. Firstly the flower/ leaf samples from 15 year-on
trees and 5 year-off t rees were collected. The real time reflectance spectra of flowers/leaves from three parts (base,
middle, top) of each main branch were measured by using the ASD spectrometer. And then the temporal and spatial
variations of spectral characteristics were analyzed. The results showed that leaves from the top of the branch had higher
reflectance than the other parts of the branch at the same time. The reflectance spectra of apple trees changed
significantly at different stages. Furthermore, the reflectance spectra varied in different parts of the apple trees as well as
in different trees. Accordingly the temporal curve and spatial figure were obtained and the growing informat ion can be
analyzed from them.
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Xiaolei Deng, Minzan Li, Lihua Zheng, Yao Zhang, Xiaofei An, "Temporal and spatial variation of canopy spectral characteristics in apple orchard," Proc. SPIE 8527, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques and Applications IV, 85271F (9 November 2012);