Greenhouse gas emissions profile for 1 tonne of wheat produced in Central Zone (East) New South Wales: a life cycle assessment approach

摘要: Life Cycle Assessment (LCA) has become an increasingly common approach across different industries, including agriculture, for environmental impact assessment. A single-issue LCA focusing on greenhouse gas emissions was conducted to determine the profile and total carbon footprint of wheat produced in Central Zone (East) New South Wales. Greenhouse (in dioxide equivalents; CO2-e) from all stages production process, both pre-farm on-farm, were included. Total found be 200 kg CO2-e per t at farm gate, based a 3.5 t/ha grain yield. The relative contribution components system determined, with most (37%) coming transport fertiliser (30%) lime (7%) nitrous oxide (N2O) emitted nitrogenous applied crop (26%). Other important included CO2 use (15%) production, diesel (16%). importance other minor is also discussed. For higher yielding (5.0 t/ha), 150 kg wheat. This paper considers effect management scenarios adopting N2O factor, which current Wales field research, rather than Australian National Accounts Inventory Report default value. provides template comparative farming systems can developed data Inventory.