Māris kļaviņŠ, azamat azizov, JĀnis zaļoksnis environment, pollution, development: the case of uzbekistan

 5.3. 
 Regional environmental pollution effects
 5.3.1.  Sulphur compounds
Today the main source of sulphur compounds in the atmo sphere 
is human economic activity. In 2006, it created approximately 65% 
of the total amount of sulphur compounds in the atmo sphere, and 
sulphur dioxide (SO
2
) made up 90% of this amount.
Sulphur is quite a widespread element on the Earth, and 
most of the sulphur compounds are found in the litho sphere and 
hydrosphere. The emission of sulphur compounds into the environ-
ment has considerably increased since the beginning of intensive 
human economic activity associated with the industrial revolution. 
The main processes in which sulphur compounds are released from 
the litho sphere are ore extraction (several metals are found in the 
form of sulphide and sulphate ores), fuel (coal, oil, peat) combustion 
and fertiliser production. The main source of sulphur dioxide 
emission is energy production, i.e. energy production by combusting