江苏省水稻生产的碳排放结构特征和影响因素研究——基于农户生产投入和规模的视角

基于对江苏省水稻生产农户的实地调研,运用投入产出法和生命周期法,对水稻生产的碳排放进行探究,并借助影响因素回归模型,探讨影响农户水稻生产碳排放的主要因素.结果表明：①江苏省农户生产1 hm2水稻的碳排放约为5 110.92 kgCe,从水稻碳排放结构特征来看,水稻生产中甲烷排放的比重较大,包括农用能源（煤炭、柴油、电力）及工业投入品（化肥、农药等）的全生命周期碳排放是水稻温室气体重要的来源;②家庭劳动力数量的增加并不会减少水稻单位产量的碳排放;③种植规模对水稻单位产量碳排放的影响显著为负,且种植规模效益地区差异明显.

Research on Structural Characteristics and Affecting Factors of Carbon Emission of Rice Production in Jiangsu Province-Based on Farmers＇ Production Inputs and Scale

In order to explore the carbon emission of rice production,this paper used the research data of Jiangsu Province and based on input-output method and the life-cycle method,and with the effects regression model to investigate the major factors of the carbon emission of rice production.The conclusions were as follows：Firstly,the carbon emission of 1 hm2 of rice of farmers production was estimated to be 5 110.92 kgCe,from the perspective of rice structural characteristics of carbon emission,methane emission of rice production accounts tor a large proportion including agricultural energy sources （coal,diesel,electricity） and industrial inputs （fertilizers,pesticides,etc.） of the full life cycle carbon emissions were a significant source of greenhouse gases rice.Secondly,an increase in the number of family labor does not reduce carbon cost.Thirdly,the scale of cultivation displayed a significantly negative with carbon cost,and the regional differences of economies of scale were significant.