| 光谱学与光谱分析 |
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| Relationship between Simulated Acid Rain Stress and Leaf Reflectance |
| SONG Xiao-dong1, JIANG Hong2, 3*, YU Shu-quan2, ZHOU Guo-mo2, JIANG Zi-shan3 |
1.Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
2.International Research Center of Spatial Ecology and Ecosystem Ecology, Zhejiang Forestry University, Hangzhou 311300, China
3.International Institute for Earth System Science, Nanjing University, Nanjing 210093, China |
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Abstract Acid rain is a worldwide environmental problem.Serious acid rain pollution in subtropical China has constituted a potential threat to the health of the local forest.In the present paper, the changing properties of the chlorophyll concentration and spectral reflectance at the visible wavelengths for the six subtropical broad-leaved tree species’ leaves under simulated acid rain (SAR) treatment with different pH levels were studied.With the increasing strength of the SAR, the chlorophyll concentrations of the experimental species under pH 2.5 and pH 4.0 treatment were higher than that under pH 5.6; the spectral reflectance at the visible wavelengths for pH 2.5 and pH 4.0 were lower than that for pH 5.6 in general; while there weren’t significant differences between pH 2.5 and pH 4.0.After the treatment with different levels of SAR, the differences in spectral reflectance at the visible wavelengths mainly focused around the green peak and red edge on the reflectance curve.The subtropical broad-leaved tree species studied were relatively not sensitive to acid rain stresses; some stronger acid rain may accelerate the growth of the tree species used here to some extent.
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Received: 2008-11-10
Accepted: 2009-03-20
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Corresponding Authors:
JIANG Hong
E-mail: hongjiang.china@gmail.com
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