Canadian greenhouse gas mitigation options in agriculture

摘要: In 1991, on farm management practices contributed 57.6 Tg CO2 equivalent in greenhouse gas emissions, that is, about 10% of the anthropogenic GHG emissions Canada. Approximately 11% these were form CO2, 36% CH4 and 53% N2O. The from soils; enteric fermentation manure, N2O primarily a function cropping manure management. With all other agricultural included, such as fossil fuels used for transportation, manufacturing, food processing etc., sector's contributions 15% Canada's emissions. this publication, several options are examined to their potential reducing These involve soil crop management, nutrient improved feeding strategies, carbon storage industrial by-products. Canadian Economic Emissions Model Agriculture (CEEMA) was predict year 2010, well impact mitigation sector. This model incorporates Regional Agricultural sub-Model (CRAM), which predicts activities related agriculture Canada up Greenhouse Gas (GGEM), estimates associated with various activities. sources 90.5 1991. Estimates based CEEMA 2010 indicate expected be 98.0 under business usual scenario, assumes present trends will continue. sector then need reduce its by 12.9 below forecasted if it is attain part government commitment made Kyoto. Technologies focusing increasing sink, improving overall farming efficiency, refined developed best practices. soils sink can increased through reduced tillage, summer fallowing, use grasslands forage crops, etc. Key areas possible reduction handling, better livestock grazing dependent adoption rate. Agriculture's could probably met recognized Kyoto Accord wide range adopted large scale. None currently recommended measures because socio-economic aspects have not been fully evaluated there still too many uncertainties emission estimates.