Remote sensed monitoring of lake dynamic change based on MODIS image

250 m250 m EOS/MODIS satellite information between 2005 and 2008 was pretreated and geometrically adjusted. Water area of Barkol Lake was calculated by using C++ program and remote sensed monitoring data was obtained by every ten days. The results showed that with the seasonal change of temperature and rainfall, the area of Barkol Lake varied accordingly. The lake was frozen from November to March and thawed after. The first maximum value of lake area was occurred in May or June, which was caused by snow melting; the second maximum value was observed in July or August, which was caused by the rainfall.