Seasonal Phenological Characteristics in East China Monsoon Regionwith AVHRR Normalized Difference Vegetation Index Data Set
利用AVHRR植被指数数据集分析中国东部季风区的物候季节特征

The Normalized Difference Vegetation Index (NDVI) departure data set in East China monsoon region (108-123°E, 21-45°N) in 1986 was established with NOAA/NASA Pathfinder AVHRR Land data set .The principle component analysis (PCA) was implemented on this data set .The temporal curves and spatial fields of the first and second principle components expose the significant characteristics of vegetation phenology in seasonality and spatial patterns in East China monsoon region. In the area south to Nanling-Wuyi Mountains, there are not very clear vegetation seasonal variations. However, obvious seasonal phenological features in whole growing season exist in the areas north from Nanling-Wuyi Mountains. In Huabei Plain which locates in the north of Huai River Valley, phenology is distinguished with the double peak growing process. Though the similar double peak growing process also happens, there are more continuous characteristics of vegetation growing in the south of Huai River Valley. Huai River Valley forms a transitional zone of vegetation seasonal phenology.