J Integr Plant Biol. ›› 1999, Vol. 41 ›› Issue (3): -.

• Research Articles •    

Research on Regulation of NDVI Change of Chinese Primary Vegetation Types Based on NOAA/AVHRR Data

LI Xiao-Bing and SHI Pei-Jun   

Abstract: Supported by the Remote Sensing, Geographic Infonnation System and Global Positioning System, using continuous time series of NOAA/AVHRR Normalized Difference Vegetation Index (NDVI) digital image with spatial resolution of 1 km x 1 km as data resources, according to Principal Components Analyses and unsupervised classification, Chinese vegetation was classified into 35 vegetation types and 9 groups, with the assistance of various basic maps and annual seasonal change of NDVI. By reconstruction of the various processes of NDVI of various vegetation types during 10 years, four regions, in which the changing process of NDVI of various internal types were relatively consistent, were assigned. These four regions show obviously zonal distribution from southeast to northwest. By estimating the correlation among NDVI changes, the four regions were further integrated into two primary regions of higher order, with their regional boundary tallied with the northwest border of the eastern monsoon region of the three natural regions in China. Furthermore, regionalization was worked out on the NDVI changing perspective, including two first-class regions and nine second-class regions.

Key words: NOAA/AVHRR, Vegetation type, NDVI, Change regulation

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