Disaggregated N₂O emission factors in China based on cropping parameters create a robust approach to the IPCC Tier 2 methodology.

ABSTRACT: China accounts for a third of global nitrogen fertilizer consumption. Under an International Panel on Climate Change (IPCC) Tier 2 assessment, emission factors (EFs) are developed for the major crop types using country-specific data. IPCC advises a separate calculation for the direct nitrous oxide (N₂O) emissions of rice cultivation from that of cropland and the consideration of the water regime used for irrigation. In this paper we combine these requirements in two independent analyses, using different data quality acceptance thresholds, to determine the influential parameters on emissions with which to disaggregate and create N₂O EFs. Across China, the N₂O EF for lowland horticulture was slightly higher (between 0.74% and 1.26% of fertilizer applied) than

SUBMITTER: Shepherd A 

PROVIDER: S-EPMC4705909 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature