Mutation analysis of snow cover based on the MODIS remote sensing image data

The basin of Taxkorgan river Yierliehei hydrology control station is used as the research area. In this basin, according to temperature, flow change and the MODIS remote sensing image data from 2002 to 2006 analyze their relationship. The analysis results indicated that: (1) snow cover has significant seasonal changes at research basin; (2) the change range of snow line is about 5000 to 5500 meters above sea level; (3) the temperature and flow change have a very strong negative current with the snow cover, and the temperature has a positive correlation with the flow in this basin; (4) the annual runoff of yierliehei hydrological station is an increasing trend.