Abstract:
Farmland and livestock operations are the major sources of environmental nitrous oxide (N
2O) emission generated from agricultural activities. Using the IPCC method, emission data were estimated and analyzed for 2005, 2010 and 2015 aiming to mitigate the pollution in Fujian. The N
2O emissions from the agricultural activities in the province were 34 100 t in 2005, 33 500 t in 2010, and 32 900 t in 2015. Compared to 2005, they were 3.52% in 2015 and 1.76% in 2010 less, and the reductions on farmland emission were 1.67% in 2015 and 1.00% in 2010, while those on livestock emission, 16.67% in 2015 and 7.14% in 2010. It appeared that the N
2O emission from farmlands was affected by the crops grown, soil conditions and fertilization practices on the land as well as the climate and resident population in the area, with nitrogen fertilizer application being the pivotal factor. For the livestock industry, optimizing husbandry structure, expanding operation scale, selecting appropriate breed, adopting advanced technology, and/or upgrading waste treatment program could benefit the pollution abatement effort.