Chapter 1. Introduction -- Chapter 2. Location and Methods of Investigation -- Chapter 3. Research of Aerosol Optical Depth and Urban Heart Island in Lanzhou City by Means of Earth Remote Sensing -- Chapter 4. Study of Air Pollution in Lanzhou City in 2003-2012 -- Chapter 5. Level of Pollutants Concentration in the Atmosphere of Lanzho -- Chapter 6. Analysis of the Causes of Influencing Factors…