Details

Autor(en) / Beteiligte

• Smith, P

Titel

Limited increase of agricultural soil carbon and nitrogen stocks due to increased atmospheric CO2 concentrations

Ist Teil von

• Journal of crop improvement, 2005-01, Vol.13 (1-2), p.393-399

Ort / Verlag

Taylor & Francis Group

Erscheinungsjahr

2005

Quelle

Taylor & Francis

Beschreibungen/Notizen

• Increased atmospheric concentrations of CO 2 may lead to increases in agricultural soil carbon and nitrogen storage, but the impact is likely to be small and is uncertain due to limitations in other resources (e.g., nutrients, water) and interactions with climatic changes. Since only a small percentage of carbon added to the soil becomes stabilised, the impact of CO 2 fertilisation of crops is considered to be very small compared to deliberate efforts to increase soil carbon by improved agricultural management. Even if agricultural soil carbon stocks are increased, carbon credits cannot be claimed under the Kyoto Protocol since the increases are not directly human-induced, a condition which must be met in order for any carbon sink to be included in emission reduction targets.