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Irrigation, soil organic carbon and N₂O emissions. A review

Trost, Benjamin ; Prochnow, Annette ; Drastig, Katrin ; Meyer-Aurich, Andreas ; Ellmer, Frank ; Baumecker, Michael

Agronomy for sustainable development, 2013-10, Vol.33 (4), p.733-749 [Periódico revisado por pares]

Paris: Springer-Verlag

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Título:
Irrigation, soil organic carbon and N₂O emissions. A review
Autor: Trost, Benjamin ; Prochnow, Annette ; Drastig, Katrin ; Meyer-Aurich, Andreas ; Ellmer, Frank ; Baumecker, Michael
Assuntos: Agricultural and forest climatology and meteorology. Irrigation. Drainage ; Agricultural sciences ; Agriculture ; Agronomy. Soil science and plant productions ; Animal, plant and microbial ecology ; Applied ecology ; Biological and medical sciences ; Biomedical and Life Sciences ; carbon dioxide ; climate change ; crop production ; desert soils ; Ecology, environment ; Environment and sustainable development ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; greenhouse gas emissions ; humid zones ; irrigation ; Irrigation. Drainage ; Life Sciences ; nitrogen compounds ; nitrous oxide ; Review Article ; semiarid zones ; soil organic carbon ; Soil Science & Conservation ; Sustainable Development
É parte de: Agronomy for sustainable development, 2013-10, Vol.33 (4), p.733-749
Notas: http://dx.doi.org/10.1007/s13593-013-0134-0
Descrição: 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.
Editor: Paris: Springer-Verlag
Idioma: Inglês

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Irrigation, soil organic carbon and N₂O emissions. A review

Trost, Benjamin ; Prochnow, Annette ; Drastig, Katrin ; Meyer-Aurich, Andreas ; Ellmer, Frank ; Baumecker, Michael

Paris: Springer-Verlag

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