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Lecture 9

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  9. Write a report for a university lecturer describing the information below.

Topic: Anthropogenic factor. Ecological crisis Global climate change: Global warming

Objectives:

1. Characteristics of anthropogenic factor

2. Environment and its components

3. Ecological crisis and ecological situations

4. Modern Ecological crisis: Pollution.

5. Natural gas composition of the atmosphere.

6. Global energy balance and Greenhouse effect. Greenhouse gases

7. Global warming, its sources and solving the problem of sustainably. International cooperation on climate change problem

 

1. Characteristics of anthropogenic factor

Anthropogenic factor – is that caused by human activities.

Characteristics:

- Irregular and therefore unpredicted effect on organisms at a higher rate - organisms cannot adopt.

- Unlimited effect on organisms up to utter destruction: (compare with natural disasters!).

- Effect on organisms through changes of environment (temperature, moisture, light, climate, pollutants etc.).

- Negative effect of people's activity for themselves (as species) and for other organisms ("Ecological boomerang" principle).

- Creation of social factors (TV, stress, education, living conditions etc.) that affect people as well as natural factors.

 

Scheme: An overview of the ecological issues

  INPUT (from environment)   OUTPUTS (into environment)  
    Accelerating energy flows    
Sources     Atmosphere (air) Lithosphere (energy, materials)   Hydrosphere (water) Biosphere (wildlife) Society problems:   Population Affluence Technology Atmosphere (air pollution) Lithosphere (solid waste)
 
 


Hydrosphere (water pollution)


Biosphere (degradation)

     Sink
    Accelerating matter cycles  
  Depletion problems Social solutions Pollution problems  


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