Abstract:
In order to guide the rational formulation of agricultural emission reduction measures, according to the research methods and emission factors provided in the guidelines for the preparation of provincial greenhouse gas list(Trial Implementation),combined with the actual agricultural production activities in Jilin Province, the total emission, evolution characteristics, structure composition and emission intensity of greenhouse gases from 2005 to 2019 in Jilin Province were analyzed.The results showed that from 2005 to 2019,the total amount of greenhouse gases in Jilin Province had experienced three evolutionary stages: rapid growth, slow growth and slow decline.The growth rate was small, and the overall greenhouse gas was relatively stable, showed a downward trend.The composition of greenhouse gases had been dominated by N
2O emissions, showed a rising trend, while the proportion of CH
4 emission equivalent had decreased year by year, with an annual share of 60.46% and 39.54% respectively.The emission sources of agricultural land have been the first source of greenhouse gases in Jilin Province, followed by the emission sources of animal gut and animal feces management, and the lowest was rice field emission, with an annual share of 50.8%,28.8%,11.5% and 8.9%.The intensity of greenhouse gas emission in Jilin Province had decreased year by year, and the transformation and upgrading of agricultural production and the effect of energy conservation and emission reduction were better.Finally, the optimization measures were put forward according to the characteristics of different emission sources of greenhouse gases.