Economic development research on the spatial-temporal characteristics and decoupling elasticity of Jiangxi farm land use carbon emissions

Based on five aspects including chemical fertilizers, pesticides, agricultural films, agricultural machinery and agricultural irrigation, which led to carbon emissions, using carbon emissions coefficient method to measure the carbon emissions and strength of Jiangxi province during the period 1995-2011 and carbon emissions and strength of 11 districts in 2010. Results showed that, from 1995 to 2011, carbon emissions in Jiangxi province presented increasing trend year by year, farm land use carbon intensity showed firstly enhanced and then weakened trends, fertilizer and agricultural mechanization was the main sources of carbon emissions at all kinds of agricultural activities. From the point of regional difference in Jiangxi, carbon emissions of Ganzhou was in the first place in 2010, its carbon emissions relating to the last was nearly 8.13 times; The carbon emissions intensity of Xinyu was the first, up to 7.4657 t/hm2, while the lowest was Jingdezhen, only 1.9240 t/hm2, only 1/3 of Xinyu, seven major grain producing areas whose carbon emissions were at the top were the main source of farm land use carbon emissions in Jiangxi province. On this basis, this paper used Tapio decoupling model to analyze the decoupling relationship between farm land use carbon emissions and agricultural economic development in Jiangxi province. The results showed that from 1996 to 2011, the main decoupling relationships between farm land use carbon emissions change and the agricultural economy development were weak decoupling, expansive connection, expansive negative decoupling, presenting Jiangxi province gave priority to agriculture economic development in recent years, performed poorly in the environment effect.