Analysis Of Temporal And Spatial Differences Of Agricultural Carbon Emissions In The Yangtze River Economic Belt And Their Influencing Factors

With global climate change and environmental pollution becoming more and more serious,the balance of the ecological environment and human survival and development are under serious threat,and low-carbon economy has become the focus of attention in many fields.As one of the largest developing countries in the world,China has actively undertaken the heavy responsibility of emission reduction in the face of global warming.The increase in the concentration of greenhouse gases in the atmosphere is an important cause of global warming.Greenhouse gases mainly come from three major industries,among which carbon emissions from agricultural production activities have become an important source of accelerating climate warming.China is a big agricultural country.In order to ensure the output of crops,a large amount of agricultural materials,such as pesticides,agricultural film and chemical fertilizers,have led to the continuous growth of carbon emissions.The Yangtze river economic belt is based on the Yangtze river basin and the link,the urban economic zone as the basic unit of macro economy collaboration,across the three regions,east Midwest is a supporting role in China's regional strategic planning,one of the largest area and the major grain-producing counties in China,occupies an important strategic position in the pattern of agricultural development in our country.The Yangtze river economic belt is rich in water resources,arable land and other agricultural resources,accounting for six of the country's nine major commercial grain production bases.The total agricultural output accounts for about 40% of the country's total agricultural output and 38.5% of its grain output.More than 50% of the country's agricultural population belongs to the Yangtze river economic belt.The advantages of water,soil and other agricultural resources in the basin are obvious and suitable for agricultural development.Therefore,the Yangtze river economic belt plays a very important role in China's agricultural development.Starting from the hot topic of low-carbon agriculture,this paper conducts a series of research and analysis on agricultural carbon emissions in the Yangtze river economic belt region,so as to understand the distribution of agricultural carbon emissions in the past 11 years and the influence of various factors.Firstly,this paper reviews the domestic and foreign literature on agricultural carbon emissions,and then introduces the research topic of agricultural carbon emissions in the Yangtze river economic belt.Secondly,it calculates the carbon emissions of various carbon sources in the Yangtze river economic belt,and understands the temporal and spatial characteristics of agricultural carbon emissions in the Yangtze river economic belt in the past 11 years.It mainly analyzes the total agricultural carbon emissions,per capita agricultural carbon emissions and agricultural carbon emission intensity.Finally,LMDI model is used to decompose and analyze the influencing factors of agricultural carbon emissions,so as to study the differences in time and space.Finally,this paper summarizes the main conclusions in the previous chapters and gives some policy Suggestions.In view of this,based on the calculation of agricultural carbon emissions in the Yangtze river economic belt from 2007 to 2017,this paper analyzed the temporal and spatial characteristics of agricultural carbon emissions in the Yangtze river economic belt,and used the LMDI model to decompose the influencing factors of agricultural carbon emissions,and made a comparative analysis of the influencing factors in different regions.Conclusion: in the past 11 years,agricultural carbon emissions in the Yangtze river economic belt have been in good condition.Although the total agricultural carbon emissions have increased,the annual growth rate has declined as a whole,and the carbon emission structure with straw burning and animal husbandry as the main sources has also improved.The development of agricultural carbon emissions in the middle and lower reaches of the Yangtze river economic belt and the provinces along the belt is generally good,but they all show obvious regional differences.From the LMDI model decomposition results,time of the Yangtze river economic belt of agricultural carbon emission factors,the carbon intensity of agriculture,industrial structure and rural population scale factors are negative,their cumulative effect of agricultural carbon effect size for: carbon intensity factors > agricultural population size > industrial structure factors.Economic factors and urbanization factors can promote agricultural carbon emissions in the Yangtze river economic belt,and economic factors have a stronger effect on promoting agricultural carbon emissions in the Yangtze river economic belt than urbanization factors.In terms of space,the factors of agricultural structure,economy and agricultural population in the downstream regions promote the growth of agricultural carbon emissions in the Yangtze river economic belt,and urbanization is the key factor to reduce agricultural carbon emissions.The intensity factors and economic factors in the middle and upper reaches regions promote the increase of agricultural carbon emissions,while urbanization and population size are the factors that inhibit the growth of carbon emissions.The intensity factor and urbanization factor in the upstream region can effectively reduce the increase of agricultural carbon emissions,and the agricultural structure and population size will promote the increase of agricultural carbon emissions in the Yangtze river economic belt.