Management Strategies to Sequester Carbon in Agricultural Soils and to Mitigate Greenhouse Gas Emissions

摘要: Carbon sequestration in agricultural soils is frequently promoted as a practical solution for slowing down the rate of increase CO2 atmosphere. Consequently, there need to improve our understanding how land management practices may affect net removal greenhouse gases (GHG) from In this paper we examine role agriculture influencing GHG budget and briefly discuss potential carbon mitigation by agriculture. We also opportunities that exist increasing soil C using such reduced tillage, frequency summer fallowing, introduction forage crops into crop rotations, conversion cropland grassland nutrient addition via fertilization. order provide information on impact ran simulations CENTURY (a model) DNDC N five locations across Canada, 30-yr time period. These trade-off between increased N2O emissions. Our model output suggests will result largest reduction emissions, while additions fertilizers small Simulations with indicated favorable growing conditions during last 15 yr could account an 6% at site Lethbridge, Alberta.