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云南农业碳排放时空演变及预测分析

Spatiotemporal Evolution and Prediction of Agricultural Carbon Emissions in Yunnan Province

  • 摘要: 运用碳排放系数法系统测算了2009—2022年云南省农业领域四大主要碳源(农用物资投入、农作物种植、稻田管理及禽畜养殖)的碳排放量,采用核密度分析法剖析了农业碳排放的动态演变规律,并对2023—2030年云南省农业碳排放量进行了预测和分析。结果表明:(1)云南省农业碳排放量分为快速上升—快速下降—缓慢上升3个阶段,2016年达到碳排放峰值(4406.77万t),曲靖、红河和文山农业碳排放量连续多年位居前列,普洱、曲靖和保山农业碳排放量增幅均在20%以上;(2)禽畜养殖是农业碳排放的主要来源,禽畜主导型、禽畜强势型和均衡型农业碳排放的动态演变核密度中心变动趋势一致,均呈现先向右移后向左移的动态特征,且区域间差异呈现扩大态势;(3)云南省农业碳排放量预计呈稳步下降态势,2030年农业碳排放量预计为3395.06万t,降幅为2.05%,怒江、迪庆、昆明和玉溪降幅达10%以上。为了促进农业绿色可持续发展,云南省应聚焦禽畜养殖规模优化管理,因地制宜实施碳减排策略,着力强化农业科技创新及成果推广。

     

    Abstract: The carbon emissions of four major agricultural carbon sources (agricultural material input, crop cultivation, rice field management and livestock breeding) in Yunnan Province from 2009 to 2022 were systematically calculated by carbon emission coefficient method. The dynamic evolution of agricultural carbon emissions was analyzed by kernel density analysis method, and the agricultural carbon emissions in Yunnan Province from 2023 to 2030 were predicted and analyzed. The results showed that: (1) The total agricultural carbon emissions in Yunnan Province can be divided into three different stages: rapid increase-rapid decrease-slow increase, and the peak carbon emissions reached 4406.77×104 tons in 2016. The agricultural carbon emissions of Qujing, Honghe and Wenshan have been in the forefront for many years, and the carbon emissions of Pu’er, Qujing and Baoshan increased by more than 20%. (2) Livestock farming is the main source of agricultural carbon emissions. The dynamic evolution of carbon emissions from livestock dominated, livestock dominant and balanced agriculture had the same trend of changes, moving first to the right and then to the left, and the differences between states (cities) were further increasing. (3) The projected trend suggests a steady decrease in carbon emissions. It was estimated that agricultural carbon emission will reach 3395.06×104 tons by 2030, with a decrease of 2.05%, with a decrease of over 10% in Nujiang, Diqing, Kunming and Yuxi. To promote green and sustainable development of agriculture, Yunnan Province should mainly focus on optimizing the management of livestock farming scale, adapting the carbon emission reduction strategy according to local conditions, and strengthening agricultural technology innovation and achievement promotion.