“双碳”战略下云南省农业碳汇研究

Research on agricultural carbon sink in Yunnan Province under the“Dual Carbon”strategy

通过估算2012—2021年云南省农业碳排放量、碳汇量,结果表明,碳汇量从2012年的2888.46万t增加到2021年的3054.97万t,但是农业的净碳汇量却从2012年的1897.88万t减少到2021年的1656.46万t,在农业碳源中农用地生产过程中的碳排放量最大,2012年农用地生产碳排放占71.62%,2021年上升到74.19%;研究发现农用地生产碳排放在持续增长,农作物碳吸收的增长速度慢于碳排放,说明农业生产方式仍为低碳发展的重点改进方向。建议农业的减排从种植、施肥、灌溉等技术进行重点方向创新技术发展,同时做好因地制宜的政策引导,联动资源做好技术、资金、人力等要素的支持,大力促进云南省农业减排增汇。

The agricultural carbon emissions and carbon sinks in Yunnan Province from 2012 to 2021 were estimated,the results showed that,the carbon sink increased from 28.8846 million tons in 2012 to 30.5497 million tons in 2021,but the net carbon sink of agriculture decreased from 18.9788 million tons in 2012 to 16.5646 million tons in 2021.Among the agricultural carbon sources,the carbon emissions during the production process of agricultural land were the largest,accounting for 71.62%of carbon emissions in 2012 and rising to 74.19%in 2021.Research had found that carbon emissions from agricultural land production were continuously increasing,and the growth rate of crop carbon absorption was slower than carbon emissions,indicating that agricultural production methods were still a key improvement direction for low-carbon development.It was suggested that agricultural emission reduction technology should focus on innovative technological development in key directions such as planting,fertilization,and irrigation.At the same time,policy guidance should be tailored to local conditions,and resources should be linked to support technological,financial,and human factors,vigorously promoting agricultural emission reduction and carbon sink increase in Yunnan Province.