关键词：大气；温室气体；排放标准
摘 要：The goal of the project is to build up a modeling tool to quantify soil greenhouse gases (GHG) emitted from agricultural production in California (CA) under current climate, soil and management conditions. We conducted (1) field data collection and analysis, (2) model calibration, validation and comparison tests, (3) regional simulation, and (4) tool development to help ARB with greenhouse gas inventory and mitigation studies. As nitrous oxide (N2O) is the major greenhouse gas for CA agricultural production, we focused our analyses on N2O emissions.