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GLOBAL BIOGEOCHEMICAL CYCLES, VOL. 16, NO. 4, 1080, doi:10.1029/2001GB001812, 2002

Modeling global annual N2O and NO emissions from fertilized fields

A. F. Bouwman

National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands


L. J. M. Boumans

National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands


N. H. Batjes

International Soil Reference and Information Centre (ISRIC), Wageningen, Netherlands


Abstract

Information from 846 N2O emission measurements in agricultural fields and 99 measurements for NO emissions was used to describe the influence of various factors regulating emissions from mineral soils in models for calculating global N2O and NO emissions. Only those factors having a significant influence on N2O and NO emissions were included in the models. For N2O these were (1) environmental factors (climate, soil organic C content, soil texture, drainage and soil pH); (2) management-related factors (N application rate per fertilizer type, type of crop, with major differences between grass, legumes and other annual crops); and (3) factors related to the measurements (length of measurement period and frequency of measurements). The most important controls on NO emission include the N application rate per fertilizer type, soil organic-C content and soil drainage. Calculated global annual N2O-N and NO-N emissions from fertilized agricultural fields amount to 2.8 and 1.6 Mtonne, respectively. The global mean fertilizer-induced emissions for N2O and NO amount to 0.9% and 0.7%, respectively, of the N applied. These overall results account for the spatial variability of the main N2O and NO emission controls on the landscape scale.

Published 12 November 2002.

Index Terms: 0365 Atmospheric Composition and Structure: Troposphere—composition and chemistry; 1610 Global Change: Atmosphere (0315, 0325); 1615 Global Change: Biogeochemical processes (4805).

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Citation: Bouwman, A. F., L. J. M. Boumans, and N. H. Batjes (2002), Modeling global annual N2O and NO emissions from fertilized fields, Global Biogeochem. Cycles, 16(4), 1080, doi:10.1029/2001GB001812.