| Carbon sequestration and emission reduction in agriculture play important roles in achieving the goals of carbon peak and carbon neutral in China on schedule.The research on the influencing factors of agricultural carbon emission is the key to achieving reduction of agricultural carbon emission.So,this study takes Hancheng city as the research object,firstly calculate the comparative advantage of main agricultural products in Hancheng city by means of resource endowment measurement method and comprehensive comparative advantage measurement method.Second,the internal structure of the agriculture was analyzed by grey relational analysis method.At the same time,the agricultural carbon emission coefficient was used to estimate the total carbon emissions of main agricultural products in Hancheng city.The LMDI model was used to discuss and analyze the factors that change carbon emission of agriculture in Hancheng City.In order to provide reference for Hancheng city agricultural industry adjustment and agricultural carbon emission reduction in the future.The main conclusions are as follows:(1)By using resources endowment measure method and comprehensive comparative advantage measure method,the comparative advantages of Hancheng city agriculture were analyzed,and the results reflect that the Sichuan pepper has high relative advantage regional,vegetable has obvious comparative advantage,whose relative advantages of the scale and the efficiency were larger than 1.In the future,Sichuan pepper,vegetables should be placed on the forefront in Hangcheng.The efficiency and scale comparative advantages of potato crops have been improved,which has potential for development and can be cultivated.The scale comparative advantage of fruits,rapeseed and maize is greater than 1,but the efficiency comparative advantage is less than 1.It is necessary to consider the application of advanced technology and equipment to improve crop production efficiency.In the animal husbandry production,mutton,beef and poultry have strong comparative advantages,and the breeding of sheep,cattle and poultry can be vigorously developed in the future.Through the grey correlation degree analysis,it can be seen that the agricultural production in Hancheng City mainly includes crop farming,agricultural service industry and stock raising.The main industries in the planting structure are Sichuan pepper,vegetable and potato,and the main animal husbandry industries are sheep,eggs,pigs and cattle.(2)Through the estimation of total carbon emission and carbon emission intensity of main agricultural products in Hancheng City,the results showed that wheat,corn,vegetables,Sichuan pepper and pig farming were the main sources of agricultural carbon emission in Hancheng City.The order of agricultural carbon emission intensity from high to low is soybean > wheat > maize > potato > rapeseed > cattle > sheep > pig > vegetable > poultry >apple > Sichuan pepper.Sichuan pepper has lower carbon emission while obtaining higher economic benefit.Through the decomposition analysis on the influencing factors of agricultural carbon emissions in Hancheng City,the results show that agricultural and animal husbandry production efficiency and agricultural labor factors in Hancheng City have achieved carbon emission reduction of 170,700 tons,while agricultural industrial structure,the city’s industrial structure,regional economic level and urbanization level have achieved carbon emission increment of 159,700 tons in recent 10 years.Agricultural and animal husbandry production efficiency contributed the most to carbon emission reduction in Hancheng City,accounting for 87%.The rapid economic development of the whole city has the most obvious effect on the increase of carbon emission in Hancheng City,accounting for57.5%.(3)Considering the existing problems in Hancheng,such as unreasonable distribution of agricultural structure,low production efficiency of planting industry,urgent need for highquality agricultural talent supply and failure to achieve regional scale of agricultural production,the regional advantages of agriculture are taken as the starting point,comprehensive consideration of agricultural carbon emission reduction;from the agricultural structure adjustment,promotion and application of science and technology,publicity of energy saving and carbon reduction,construction of demonstration parks of Hancheng city to promote the development of agricultural industry optimization suggestions. |
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