China's Agricultural Greenhouse Gas Emissions

The problem of global warming caused by greenhouse gas emissions has become more and more obvious,which has brought significant adverse effects on human society and economic development.How to curb global warming and reduce greenhouse gas emissions has become an urgent global issue.As the basic industry in the national economy,agriculture is not only closely related to the emission of greenhouse gases,but also sensitive to the impact of climate change.As an important source of China's greenhouse gas emissions,agricultural greenhouse gas emission reduction is an important prerequisite for the realization of China's agricultural economic transformation,and national emission reduction goals.Therefore,clarifying the major emitters of greenhouse gases in China's agricultural sector and build the reasonable construction of China's agricultural greenhouse gas emissions measurement system,the simulation analysis of the tendency of the agricultural sector greenhouse gas emissions and structure,the technical path for research to reduce greenhouse gas emissions and build the policy system,the climate in our country in the future work and emission reduction policy has important theoretical significance.Because the production behavior of the agricultural sector and greenhouse gas emissions is a complex process,in order to accurately analyze sources of agricultural greenhouse gas emissions,and calculates and analyzes the changing trend of the department of agriculture greenhouse gas emissions and structure of this study is based on environmental economics,computable general equilibrium theory,and other related scientific theories and methods,starting from the actual situation of our country agricultural greenhouse gas emissions,to clarify the Chinese department of agriculture,the major source of greenhousegases,to build China's agricultural dynamic computable general equilibrium model,the Chinese agricultural greenhouse gas emissions,agricultural land use pattern change and food production and so on carries on the qualitative and quantitative research.To measure and analyze the trends and structure of greenhouse gas emissions in the agricultural sector.In addition,this study constructed the agricultural sector energy technology progress,simulation analysis of the energy technology progress to the department of agriculture production and the impact of greenhouse gas emissions,further study on the agricultural sector technical path and policy Suggestions to reduce greenhouse gas emissions,agricultural greenhouse gas emissions to provide data for the future reference.Through the research,the following conclusions are mainly formed:?1?From 2008 to 2050,China's agricultural greenhouse gas emissions show an overall trend of increasing year by year,increasing from 0.81 GtCO₂-e in 2008 to 8.85 GtCO₂-e in 2050.The growth rate of agricultural greenhouse gas emissions in different stages is different,with the growth rate increasing first and then decreasing.Among them,the emissions of the three types of greenhouse gases are quite different.The growth rate of N₂O emissions is the fastest,increasing to 3.04 GtCO₂-e,while the proportion of CH₄ in agricultural greenhouse gas emissions is always the highest.Therefore,agricultural non-CO₂ greenhouse gases are the main reason for the increase of agricultural greenhouse gas emissions.?2?From 2008 to 2050,China's agriculturalCO₂ emissions increased year by year,from172.52 mtCO₂ in 2008 to 879.99 mt in 2050 at an average annual growth rate of 3.96%.Among them,agricultural materials as the most important source of agriculturalCO₂ emissions,its emissions increased from 85.71 Mt to 869.71 Mt.In addition,during the simulation period,the total area of agricultural land in China increased to662.13 Mhm2,and the overall change of agricultural land use in China was shown as a carbon sink.Thetotal carbon sink reached 4454.99 Mt ofCO₂ by 2050,and the carbon sink to some extent offset theCO₂ emissions caused by agricultural production activities.?3?From 2008 to 2050,the total amount of agricultural non-CO₂ greenhouse gases in China increased from 0.98 GtCO₂-e in 2008 to 8.12 GtCO₂-e in 2050.Among them,animal husbandry production activity is the most major source of emissions,and its proportion in the total emissions increases year by year,and its proportion also increases from 51.35% to 69.31%.?4?Under the scenario of agricultural energy technology progress,the improvement of energy utilization efficiency in the agricultural sector has relatively little impact on agricultural production,and the annual growth rate of agricultural production remains basically unchanged.In addition,advances in agricultural energy technology can improve energy efficiency,reduce agricultural energy input,and reduce agricultural greenhouse gas emissions to a certain extent.