| Abstract | 第4-5页 |
| 摘要 | 第6-12页 |
| 1 Introduction | 第12-32页 |
| 1.1 Background and significance | 第12-15页 |
| 1.2 Research at home and abroad | 第15-32页 |
| 1.2.1 Research in atmospheric remote sensing satellite technology | 第15-22页 |
| 1.2.2 Experience of study urban areas using thermal images | 第22-25页 |
| 1.2.3 Research status of atmospheric particulate matter pollution levels | 第25-29页 |
| 1.2.4 Investigation of the effect of atmospheric pollutants on human health | 第29-31页 |
| 1.2.5 Problems and shortcomings | 第31-32页 |
| 2 Location and methods of investigation | 第32-46页 |
| 2.1 Location of the study | 第32-34页 |
| 2.1.1 Geographical location | 第32页 |
| 2.1.2 Characteristics of the city districts | 第32-33页 |
| 2.1.3 Climate and environmental problems | 第33-34页 |
| 2.2 Sources of data | 第34-38页 |
| 2.2.1 Ground-based PM and gaseous pollutants concentration data | 第34-35页 |
| 2.2.2 Ground-based meteorological measurements | 第35页 |
| 2.2.3 Data of MODIS | 第35-37页 |
| 2.2.4 Data of Landsat–8 | 第37-38页 |
| 2.3 Methodology | 第38-46页 |
| 2.3.1 Criteria for evaluation of air pollution | 第38-40页 |
| 2.3.2 Satellite-based measurements | 第40-42页 |
| 2.3.3 The Method for extracting ecological factors of underlying surface | 第42-45页 |
| 2.3.4 Statistical analysis | 第45-46页 |
| 3 Reserch of aerosol optical depth and urban heart island in Lanzhou City by means of earth’sremote sensing | 第46-67页 |
| 3.1 Spatial and temporal variability of the temperature of the earth's surface in LanzhouСity | 第46-53页 |
| 3.2 Spatial and temporal variability of the Normalized Difference Vegetation Index inLanzhou Сity | 第53-54页 |
| 3.3 Spatial and temporal variability of aerosol optical depth with use of MODIS data .. 43 | 第54-61页 |
| 3.4 Temporal and spatial distribution of atmospheric aerosol in typical dusty weather overLanzhou using CALIPSO, OMI and NAAPS | 第61-67页 |
| 4 Study of air pollution in Lanzhou City in 2003-2012 | 第67-78页 |
| 4.1 Urban air quality assessment | 第67-69页 |
| 4.2 Temporal variation of air pollutant concentration | 第69-75页 |
| 4.2.1 Annual variation of pollutant concentration | 第69-71页 |
| 4.2.2 Seasonal changes in the concentration of pollutants | 第71-73页 |
| 4.2.3 Daily variations of pollutants | 第73-75页 |
| 4.3 Relationship between air quality and meteorological conditions | 第75-78页 |
| 5 Level of pullutants concentration in the atmosphere of Lanzhou | 第78-100页 |
| 5.1 Total level of pollution | 第78-79页 |
| 5.2 Statistical characteristics of pollutant concentrations in the atmosphere of Lanzhou in2013?2016 | 第79-93页 |
| 5.2.1 PM2.5 and PM10 concentration in Lanzhou | 第80-85页 |
| 5.2.2 Concentration of carbon monoxide (CO) in Lanzhou | 第85-87页 |
| 5.2.3 Concentrations of nitrogen dioxide (NO2) in Lanzhou | 第87-90页 |
| 5.2.4 Concentrations of sulfur dioxide (SO2) in Lanzhou | 第90-91页 |
| 5.2.5 The concentration of ozone (O3) in Lanzhou | 第91-93页 |
| 5.3 Relationships between PM and gaseous pollutants | 第93-100页 |
| 5.3.1 Correlations between PM2.5 and PM10 in different seasons | 第94-95页 |
| 5.3.2 Relationships between PM and gaseous pollutants | 第95-97页 |
| 5.3.3 Relationships between gaseous pollutants | 第97-100页 |
| 6 Analysis on the causes of air pollution and its influencing factors in Lanzhou | 第100-127页 |
| 6.1 The impact of dust storms on air quality | 第100-113页 |
| 6.1.1 Dust storms: classification and characteristics | 第100-102页 |
| 6.1.2 Regional pollution characteristics of the dust weather | 第102-106页 |
| 6.1.3 Effects of sandstorms on air quality in Lanzhou | 第106-108页 |
| 6.1.4 Long-range transport of dust in Lanzhou | 第108-113页 |
| 6.2 Meteorological conditions of air pollution in Lanzhou | 第113-127页 |
| 6.2.1 Meteorological conditions of atmospheric pollution | 第113-115页 |
| 6.2.2 Indicators of the natural self-cleaning ability of the atmosphere | 第115-119页 |
| 6.2.3 Relationship between meteorological parameters and air pollution | 第119-124页 |
| 6.2.4 Relationship between climatic factors and air pollutants | 第124-127页 |
| 7 Conclusions and prospects | 第127-131页 |
| 7.1 Conclusions | 第127-128页 |
| 7.2 Innovation | 第128-129页 |
| 7.3 Prospects | 第129-131页 |
| References | 第131-143页 |
| Research achievement during working for the degree | 第143-144页 |
| Acknowledgements | 第144页 |
