Estimates of denitrification in soil by remote sensing of thermal infrared emission at different moisture levels
✍ Scribed by Kerstin Robertson; Leif Klemedtsson; Sune Axelsson; Thomas Rosswall
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 472 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0178-2762
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✦ Synopsis
Remote sensing techniques may be one way to narrow the range of uncertainty in extrapolating N 2 emissions from small-scale to large-scale terrestrial ecosystems. In the present work we investigated the correlations between denitrification activity, soil moisture, and soil thermal infrared emissions. A field experiment was performed on two different agricultural soils, one loam and one silty clay. The results indicated that thermal infrared emissions can only be used to estimate the denitrification rate in soil within a limited range of soil moisture levels. Estimates of denitrification activity based on soil texture and moisture are, however, very likely to be a fruitful approach to generating large-scale N fluxes.