Regional Vegetation Phenology Monitoring Based on MODIS

Vegetation phenology was corresponding to the date of obvious change of vegetation.Regional vegetation phenology data were the basis for estimating the yield, monitoring vegetation growth and predicting disaster and so on.The objective of this paper was to establish a method of monitoring regional vegetation phenology based on MODIS.Data used in this research were 10-day composite NDVI from MODIS with 250m spatial resolution in 2004.Savitzky-Golay filter was used to smooth the multi-temporal NDVI data to eliminate noises.Through analyzing the vegetation of study area, three key plant phenological variables were selected, including the start of growing season, end of growing season, durative time of max coverage in growing season.The results showed that MODIS could monitor the regional vegetation phenophase.