Abstract
The spatial characteristics of NDVI of Xinjiang Tianchi Bogda Peak natural reserve are analyzed by using the AVHRR and MODIS NDVI date from 1990 to 2015. The temporal change of NDVI of this natural reserve is analyzed by using one variable linear regression and the correlation analysis. The results indicate that, the NDVI values are higher in north than those in south in 2015. As the altitude increases, the NDVI first increases, and then decreases. According to the grading results, the proportion of the moderate vegetation grade is larger than others. From 1990 to 2015, the change rate of NDVI is 0.0171/5a (p > 0.05). The NDVI of this natural reserve shows an increasing tendency, except for 2005-2010. The results of this study provide a theoretical basis for the management department to fully understand the vegetation status in the natural reserve, and to make policies and measures accordingly.
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