ADLib Glossary (G)

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Greenhouse Gases

This shows the relative importance of the three greenhouse gases emitted by UK agriculture. In terms of Global Warming, methane is 15 - 30 times more powerful than carbon dioxide, whereas nitrous oxide is 290 times more powerful than carbon dioxide over a 100 year period.

The amount of amount of carbon dioxide produced during fertiliser and machinery manufacture is shown as a comparison, but this carbon dioxide is not produced by agriculture and, in the case of imported goods, it is produced outside the UK. Agriculture produces about 1% of the amount of carbon dioxide released in the UK (this does not include any contribution from emissions made during manufacture of fertilisers and machinery), 30% of the methane and 40 to 50% of the nitrous oxide emitted in the UK.

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