Irrigation, soil organic carbon and N2O emissions. A review - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Agronomy for Sustainable Development Année : 2013

Irrigation, soil organic carbon and N2O emissions. A review

Benjamin Trost
  • Fonction : Auteur
Annette Prochnow
  • Fonction : Auteur
Katrin Drastig
  • Fonction : Auteur
Andreas Meyer-Aurich
  • Fonction : Auteur
Frank Ellmer
  • Fonction : Auteur
Michael Baumecker
  • Fonction : Auteur

Résumé

Irrigation has a critical role for crop production worldwide. In particular, irrigation is a major issue due to the growing food demand and climate change. Irrigation affects yields and the emission of greenhouse gases such as CO2 and N2O by soils. Here, we review the effect of irrigation on soil organic carbon and N2O emissions. We analysed 22 investigations in various regions of the world. Interactions between irrigation, soil and management factors are described. The main points are: (1) The influence of irrigation is strongly dependent on climate and initial soil organic carbon content. For instance, irrigation of cultivated desert soils led to an average increase of 90 % to over 500 % of soil organic carbon. (2) Irrigation of semiarid regions increases soil organic carbon by 11 % to 35 %. (3) No consistent effects of irrigation were observed in humid regions. In many cases, N2O emissions increase after precipitation or irrigation. (4) Comparison of N2O emissions from irrigated and non-irrigated fields shows that availability of reactive nitrogen compounds controls increased N2O emissions under irrigation, in most cases. Here, increases of about 50 % to 140 % in N2O emissions were reported.
Fichier principal
Vignette du fichier
13593_2013_Article_134.pdf (654.68 Ko) Télécharger le fichier
Origine : Publication financée par une institution
Loading...

Dates et versions

hal-01201385 , version 1 (17-09-2015)

Identifiants

Citer

Benjamin Trost, Annette Prochnow, Katrin Drastig, Andreas Meyer-Aurich, Frank Ellmer, et al.. Irrigation, soil organic carbon and N2O emissions. A review. Agronomy for Sustainable Development, 2013, 33 (4), pp.733-749. ⟨10.1007/s13593-013-0134-0⟩. ⟨hal-01201385⟩
297 Consultations
1473 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More