Analysis of Vegetation Cover Changing Trend in Pearl River Basin

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Abstract:

The vegetation cover changing trend in Pearl River Basin during 1998-2012 are analyzed based on sequential SPOT VEGETATION data with Maximum Value Composites (MVC) method and linear regression technique. Results show: (1) From 1998 to 2012, the seasonal maximum NDVI changes in Pearl River Basin are obvious, peak appears in September and minimum in February, average is 0.578, the mean maximum NDVI is on the rise during the recent 15 years; the average of maximum NDVI is 0.740, the vegetation cover condition is good, but there is an obvious spatial difference. (2) In recent 15 years, the mean maximum NDVI trend shows that vegetation overall improved, deteriorated partly. Improved area, deteriorated area and invariant area account for 69.80 percent, 2.10 percent and 28.10 percent of the total area respectively.

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903-906

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May 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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