Scientists at climate talks say major changes to the nitrogen cycle cannot be ignored

AlphaGalileo
04 December 2009 International Geosphere-Biosphere Programme (IGBP)

An international group of scientists say there is an immediate need for a global assessment of the nitrogen cycle and its impact on climate.

On a planetary scale, human activities, especially fertiliser application, have more than doubled the amount of reactive nitrogen in circulation on land. This massive alteration of the nitrogen cycle affects climate, food security, energy security, human health and ecosystem health. The long-term consequences of these changes are yet to be fully realised, but the human impact on the nitrogen cycle has so far been largely missed in international environmental assessments.

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