Agricultural Carbon Emission Measurement And Low-carbon Development In Jingzhou City

Low carbon development is the inevitable choice of sustainable agricultural development,is to ensure national food security,promote farmers to increase income and economic and social development of the realistic needs.The 14 th Five-Year Plan is a critical period for green and low-carbon agricultural development in China,as well as a window period for achieving carbon peak in 2030.So,how to develop low-carbon agriculture in the new era is particularly important,especially for each region within a country.By studying the dynamic evolution and influencing factors of agricultural carbon emissions in different regions,we can provide targeted and feasible guidance for agricultural carbon peak.Jingzhou city is an important part of Jianghan Plain,which is one of the nine commodity grain production bases in China,with superior agricultural production conditions and large agricultural production scale,and is the second largest grain production area in Hubei Province.However,according to the second Pollution Source Census bulletin released by Hubei province and Jingzhou city respectively in2020,the high grain yield in Jingzhou city may be at the cost of high agricultural carbon emissions,which is obviously inconsistent with the goal of developing low-carbon agriculture.Therefore,this article selects Jingzhou city agriculture,this paper refers to the special agriculture,or farming as the research object,from two aspects: the overall and sub-regional measure carbon agriculture,and analyzes the change trend of agricultural carbon emissions,further based on Kaya identities and LMDI decomposition method to analysis the influence factors of agricultural carbon emissions,Jingzhou city low carbon development of agriculture and the optimum path of carbon emissions.The research results of this paper are mainly divided into two aspects:One is change characteristics of agricultural carbon emissions.(1)From the perspective of time change characteristics,agricultural carbon emissions in Jingzhou city showed an "inverted U shape",which was shown as a two-stage sequential change trend of "rapid increase in the early stage and slow decrease in the later stage".Among them,the proportion of carbon emission produced by agricultural input factors in Jingzhou city from high to low is in descending order: chemical fertilizer,pesticide,diesel oil,agricultural film,irrigation and tillage.While the agricultural carbon emissions in Jingzhou city decreased,the grain output still maintained an increasing trend.Therefore,the high grain output in Jingzhou city was not at the cost of high agricultural carbon emissions.(2)From the perspective of spatial variation characteristics,agricultural carbon emissions in different regions also showed an "inverted U shape" feature.From high to low,agricultural carbon emissions in Jianli city,Gong ’an county,Honghu city,Songzi city,Jiangling county,Jingzhou district,Shishou city and Shashi district showed an "inverted U shape" feature.Another is influencing factors of agricultural carbon emissions.(1)From the overall level,agricultural production efficiency and agricultural industrial structure have an inhibiting effect on agricultural carbon emissions in Jingzhou city,and the former has always been the biggest inhibiting factor of agricultural carbon emissions in Jingzhou city.On the contrary,agricultural economic level and agricultural labor force have positive effect on agricultural carbon emission in Jingzhou city.(2)At the regional level,agricultural production efficiency and agricultural economic level are the main influencing factors of agricultural carbon emissions,and the direction of effect varies from region to region,which may be related to the level of development and agricultural policy in each region.Finally,according to the research results,this paper summarizes the problems existing in the development of low-carbon agriculture in Jingzhou city from the four aspects of agricultural production efficiency,agricultural industrial structure,agricultural low-carbon awareness and coordinated agricultural development,and puts forward corresponding optimization suggestions to provide reference for the further realization of low-carbon agriculture in Jingzhou city.