关键词: 农业生态系统, 低碳农业, 碳源, 碳汇, 云南省

Abstract: 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 28.884 6 million tons in 2012 to 30.549 7 million tons in 2021, but the net carbon sink of agriculture decreased from 18.978 8 million tons in 2012 to 16.564 6 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.

Key words: agroecosystem, low carbon agriculture, carbon source, carbon sink, Yunnan Province