Changes of Reflectance Spectra of Pine Needles in Different Stage after Being Infected by Pine Wood Nematode
XU Hua-chao1, 2, LUO You-qing1*, ZHANG Ting-ting2, SHI Yong-jun3
1. The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China 2. School of Forestry and Biotechnology, Zhejiang A ＆ F University，Lin’an 311300，China 3. School of Environmental Sciences and Technology，Zhejiang A ＆ F University，Lin’an 311300，China
Abstract：In the present study, seedlings of Pinus Thunbergii and Pinus Massoniana were planted and used for reflectance spectrum measurement. In different stage after being infected by pine wood nematode, reflectance spectra were measured by ASD spectrometer and the features of spectral parameters and the change of chlorophyll were analyzed. The results showed that (1) Disease could be estimated in the early stage according to the curve of mid-infrared reflectance; (2) Dynamic parameters such as the position of red edge, green peak height, reflectance of red band, slope of red edge and reflectance of water-stressed wave band were consistent with the disease features of two pine species after being infected by pine wood nematode; (3) To both of two pine species, content of chlorophyll tended to reduce with the development of disease and obvious linear relationship was observed between chlorophyll content and spectral parameters. There results might be able to provide some theoretical basis for the application of remote sensing technology in monitoring of pine wood disease. In addition, it might be also used as theoretical support for the controlling measures in different stage after being infected by pine wood nematode.
徐华潮1，2，骆有庆1*，张廷廷2，施拥军3 . 松材线虫自然侵染后松树不同感病阶段针叶光谱特征变化 [J]. 光谱学与光谱分析, 2011, 31(05): 1352-1356.
XU Hua-chao1, 2, LUO You-qing1*, ZHANG Ting-ting2, SHI Yong-jun3 . Changes of Reflectance Spectra of Pine Needles in Different Stage after Being Infected by Pine Wood Nematode. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(05): 1352-1356.
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