Abstract: he Aibi Lake is an endorheic lake formed in the Himalayan Orogeny. According to the characteristics of evolution, its formation history can be classified into three periods: (a)Formation period; (b)Fresh water lake period;and (c)Salt water lake period. Based on the correlation analysis between the curve of area of Aibi Lake and the curve of water consumption by human activity during 1950-1995, the conclusion could be drawn that the water consumption of human activity was the direct cause of the decay of the Aibi Lake. And many of environmental problems as a chain reaction of the decay of the Aibi Lake were caused by the improper utilizing methods and greatly damaged the natural resources in the Aibi Lake Area.

Key words: simulated satellite channel, vegetation index, wheat, nitrogen index, quantitative monitoring equation.