Detecting Sulfuric and Nitric Acid Rain Stresses on Quercus glauca through Hyperspectral Responses.

The reflectance around green peak showed a trend of increasing first and then decreasing as the acidity increased.

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The GPAI difference showed distinct seasonal characteristics, which increased slightly in the initial few measurement periods followed by a decreasing trend, and then increased again.

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GPAI increased firstly and then decreased with acidity increase for both SAR and NAR stresses in all the three stages, while NDVI did not show an obvious regular and PRI overall presents an increasing trend except on the 24 July 2013 for NAR stress. 3.2.

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