Abstract
A simple global model of the production potential of nitrous oxide
(N2O) in natural soils is developed to analyze the relative
importance, both geographically and seasonally, of the different
controls on N2O production at the global scale. Five major
controls on N2O production are included: (1) input of organic
matter, (2) soil fertility, (3) soil moisture status, (4) temperature,
and (5) soil oxygen status. Indices for the controls are derived from
global gridded (1°×1° resolution) data bases of soil type,
soil texture, NDVI and climate. The model explains close to 60% of the
variability found in measurements reported at about 30 sites in six
different ecosystems throughout the world. Although this result is
reasonable for global analyses, the correlation is considered
insufficient to make global estimates of nitrous oxide emission with
confidence. The model confirms conclusions from earlier studies that the
major source regions of nitrous oxide are in the tropics.
Original language | English |
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Pages (from-to) | 557-597 |
Journal | Global Biogeochemical Cycles |
Volume | 7 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Sept 1993 |
Keywords
- Atmospheric Composition and Structure: Biosphere/atmosphere interactions
- Atmospheric Composition and Structure: Geochemical cycles
- Atmospheric Composition and Structure: Troposphere-composition and chemistry