中国农学通报2025，Vol.41Issue(35)：71-79,9.
农业生态系统固碳特征与潜力预测
Carbon Sequestration Characteristics and Potential Prediction of Agricultural Ecosystem in Fuzhou City
摘要
Abstract
Based on the carbon sequestration rate method and BP neural network model,carbon sequestration status and potential of agricultural ecosystem in Fuzhou City from 2010 to 2021 were evaluated.The results showed that over the past 11 years,the average annual carbon sequestration amount of agricultural land in Fuzhou City was 203900 tons(equivalent to 747600 tons of CO2),which grew at an average annual rate of 1.13%,with carbon sequestration of orchards occupying on nearly 70%.The contribution rate of straw returning to soil carbon sequestration of farmland(64.7%)was significantly higher than that of fertilizer application(35.3%).Spatially,Yongtai,Minhou,Fuqing and Minqing counties were the core areas of carbon sinks in Fuzhou City.Due to superior hydrothermal conditions and higher agricultural management levels in coastal regions,the carbon sequestration rate was higher than that in inland areas.Projections indicated that,under current agricultural development trends,carbon sequestration of agricultural land from 2022 to 2030 would show a fluctuating trend of first slowly decreasing and then slowly increasing.The fluctuations were chiefly driven by a slight reduction in farmland area,agriculture structural adjustments,and the delayed impact of management practice adoption.Finally,recommendations were proposed to enhance the region's agricultural carbon neutrality capacity,including strengthening the strategic role of orchard carbon sinks,promoting straw return and optimized fertilization techniques,and exploring agricultural carbon trading mechanisms.关键词
农业固碳/秸秆还田/果园碳汇/固碳潜力/BP神经网络Key words
agricultural carbon sequestration/straw returning to the field/orchard carbon sink/carbon sequestration potential/BP neural network分类
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黄艳..农业生态系统固碳特征与潜力预测[J].中国农学通报,2025,41(35):71-79,9.基金项目
福建省红壤山地农业生态过程重点实验室开放课题"福州市农业固碳现状与潜力分析"(Aephrs-202501). （Aephrs-202501）
