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通过构建江西省农业碳排放测算体系,采用碳转化系数法对江西省县域农业碳排放进行了估算,并分析了2000~2010年江西省农业碳排放的时空动态及其影响因素。结果表明:(1)江西省农业碳排放总量从2000年的230.85万t增长到2010年的290.51万t,不同年份农业碳排放均主要源于化肥施用与农业机械使用;(2)全省农业碳排放量的空间分布呈现较为明显的集聚特征,主要年份高碳排放区均集中于鄱阳湖周边地区;碳排放强度多为Ⅱ级水平,空间分布上与碳排放量相比更为均衡;(3)江西省县域间农业碳排放的相对差异与绝对差异整体上均呈明显扩大的趋势;(4)生产效率、结构、劳动力等因素对农业碳排放有抑制作用,农业经济发展则促进碳排放量增加,农业碳排放还受社会、政策等影响。
Through the establishment of the system of estimating agricultural carbon emissions in Jiangxi Province, the carbon conversion coefficient method was used to estimate the agricultural carbon emissions in Jiangxi Province. The spatial and temporal dynamics of agricultural carbon emissions in Jiangxi Province from 2000 to 2010 and its influencing factors were also analyzed. The results showed that: (1) The total agricultural carbon emissions in Jiangxi Province increased from 2.3085 million tons in 2000 to 2.9051 million tons in 2010, and the agricultural carbon emissions in different years mainly came from the use of chemical fertilizers and agricultural machinery; (2) The spatial distribution of agricultural carbon emissions showed obvious characteristics of agglomeration. In the main years, the high-carbon emission areas were all concentrated in the areas around Poyang Lake. The carbon emission intensity was mostly Grade II level, which was more balanced in space distribution than that of carbon emissions. (3) The relative difference and absolute difference of agricultural carbon emissions among counties in Jiangxi Province all tended to widen significantly. (4) Factors such as production efficiency, structure and labor force had an inhibitory effect on agricultural carbon emissions while agricultural economic development promoted carbon Increased emissions, agricultural carbon emissions are also affected by social, policy and so on.