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Chapter 7 Environmental geoscience 7.1 Characteristics, status and role of environmental geoscience 7.2 Combined system of human - earths environment 7.3 Entirety of human - earths environment as well as influence and response of each circle 7.4 Case study 7.1 Characteristics, status and role of environmental geoscience 7.2 Combined system of human - earths environment Atmospheric environment and air pollution The classification and characteristics of air pollutants Diffusion and study methods of pollutant in atmospheric （3）The value and protection of air resources （3） The value and protection of air resources 7.2.2 The water environment and the marine environment 7.2.3 Status and role of other layers 7.3 Entirety of compound system of human-earth environment and influence and response between each layer. Case study - energy cycle * * Study purpose: master change and development regular of each environmental element and environmental system, implement to predict and management environmental system, and make accord development of human – earth. During environmental science system, environmental geoscience is subject to comprehensively study entirety of combined system of human - earths environment and correlation between each subsystem. Provide scientific basis and support for other subfield research, and summarize and integrate the results and progress of other subfield research. 7.2.1 Combined system of human - earths environment (1) Weather system Weather system is a whole system composed with underlayer atmosphere, hydrosphere, cryosphere, biosphere, pedosphere, superior part of lithosphere. They have close and complex interactions between them. (2) Air pollution in atmospheric environment and boundary layer Atmosphere is the most active part with the largest change in earth system, and atmospheric sphere, one of the subsystems in combined system of human - earths environment, is an important part of the human environment. Atmospheric