|Anthropogenic emissions by sources and removals by sinks of greenhouse gases|
|<< N2O EMISSION >>|
|The biggest volume of N2O
emissions in the period of 1990-1998 in Tajikistan was indicated in 1990 (about 4 Gg); the
lowest emission was indicated during 1995-1998 (about 2 Gg), mainly because of applying
mineral fertilizers. Nitrous oxide emissions in the category "Agriculture" make
in different years from 95% to 99% of all N2O emissions. N2O
emissions from other sectors (manure management, waste, energy) are insignificant.
Totally in the country, the volume of nitrous oxide emissions in the period under review has decreased twice as a result of reduced applying mineral fertilizers and reduction in consumption of fossil fuels. N2O emissions from agricultural soils depend on the types of soils, contents of humus, activities of microorganisms, liming, cattle pasturing, fertilizing and other factors. While calculating N2O emissions from agricultural soils, the experts used data on applying mineral fertilizers, which enriches the soil with nitrogen, reinforces processes of mineralization, change biological activity. In Tajikistan, application of mineral fertilizers has been decreasing year by year, due to reduction of import of mineral fertilizers and low capacity of domestic production.
Another source of N2O emissions is a high-temperature combustion of fuel, when nitrogen consisting of atmospheric air reacts with oxygen. Given that heat power plants and transport in Tajikistan is few, the volume of N2O emissions is insignificant and makes 0,2-0,5 Gg.
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