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Denitrification in agricultural soils: Summarizing published data and estimating global annual rates
Denitrification in agricultural soils: Summarizing published data and estimating global annual rates
- Source :
- Nutrient Cycling in Agroecosystems, 72(3), 267-278, Nutrient Cycling in Agroecosystems 72 (2005) 3
- Publication Year :
- 2005
-
Abstract
- Information taken from 336 measurements of denitrification in agricultural soils was summarized to assess the influence on denitrification of several factors related to soil, climate, agricultural management and the measurement techniques. The data set is summarized by calculating means and medians and balanced median values (with correction for unbalanced features) for all factor classes in the data set, and by developing a summary model to calculate global denitrification rates for a 0.5 by 0.5 degree resolution. Our results suggest that agricultural fields with high nitrogen application rates and poor soil drainage show higher denitrification values than those with lower nitrogen application rate and good soil drainage. The data also indicate that conditions in wetland rice systems are more prone to denitrification than those in upland cropping and grassland systems. Large uncertainties in the results are caused by differences between the measurement techniques and lack of long-term measurements covering the range of environmental and management conditions found in global agricultural fields.
- Subjects :
- nitrous-oxide
Denitrification
Soil Science
Soil science
Wetland
engineering.material
Grassland
no
acetylene
Drainage
volatilization
geography
fertilized fields
geography.geographical_feature_category
business.industry
variability
emissions
n2o
nitrification
Environmental Systems Analysis
Agriculture
Milieusysteemanalyse
Soil water
atmosphere
engineering
Environmental science
Nitrification
Fertilizer
business
Agronomy and Crop Science
Subjects
Details
- Language :
- English
- ISSN :
- 13851314
- Volume :
- 72
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Nutrient Cycling in Agroecosystems
- Accession number :
- edsair.doi.dedup.....9a4c11fe9d76237cfd67b2ee90ea2cb5
- Full Text :
- https://doi.org/10.1007/s10705-005-3109-y