| 光谱学与光谱分析 |
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| Changes of Forest Canopy Spectral Reflectance with Seasons in Lang Ya Mountains |
| LI Wei-tao1, 2, 3, PENG Dao-li1*, ZHANG Yan2, WU Jian2, 3, CHEN Tai-sheng2, 3 |
1. The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
2. Geography Information and Tourism College, Chuzhou University, Chuzhou 239000, China
3. Anhui Center for Collaborative Innovation in Geographical Information Integration and Application, Chuzhou 239000, China |
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Abstract The physiological mechanism and ecological structure of forest trees can change with the changes of years. In a certain extent, the changes were expressed through the canopy spectral features. The mastery of changing rules about spectral characteristics of trees over the years is benefit to remote sensing interpretation and provide scientific basis for the classification of different trees. The study adopted high-resolution spectrometer to measure the canopy spectral characteristics for seven major deciduous trees and seven evergreen trees to gain the spectrum curve of four different ages and calculate the first derivative curve. The analysis of changing rules about spectral characteristics of different deciduous trees and evergreen trees and the comparison of changes about spectrum of various trees in the visible and infrared band could find the best year and best band for identification of trees. The results showed that the canopy spectral reflectance of deciduous and evergreen trees increases with the increase of age. And the spectral changes of two species were most obvious in the near infrared band.
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Received: 2014-11-25
Accepted: 2015-02-06
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Corresponding Authors:
PENG Dao-li
E-mail: dlpeng@bjfu.edu.cn
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