Les Pèrdues de N2O del sòl

Authors

  • Maria Assumpta Gispert Negrell

Abstract

At certain conditions, nitrates may be quickly lost from soil by a microbial process called denitrification. It is proper to emphasize that not all the intermediary gaseous products of denitrification are converted into N2, so that part of the N2O escapes to the atmosphere, This may have a serious environmental impact. From an ecological point of view, denitrification may be understood as a process through which the atmospheric nitrogen that has been biochemically fixed in the soil is given back to the atmosphere. However this may have environmental consequences as the N2O in the atmosphere (together with other gases) increases greenhouse effect. N2O helps to destroy the stratospheric ozone layer (O3) and provokes acid rain. From an economical point of view, denitrification is important in agriculture because it supposes a nutritional loss of the soil. The application, in high quantity, of some fertilizers may also help this process. Various authors relate denitrification with different environmental factors and several physic-chemical characteristics of soil.

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Published

2001-03-22

How to Cite

Gispert Negrell, M. A. (2001). Les Pèrdues de N2O del sòl. Dossiers Agraris, (5), 21–27. Retrieved from https://revistes.iec.cat/index.php/DA/article/view/23757.001

Issue

5: Problemes moderns en l'ús del sòls : nitrats

Section

Articles

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