1.Upper and Middle Yellow River Bureau,Yellow River Conservancy Commission,Xi’an,Shaanxi ;710021,China
2.Soil and Water Conservation Field Scientific Observation and Research Station on Loess Plateau,Ministry of Water Resources,Xi’an,Shaanxi 710000,China
3.School of Business,Xinjiang University,Urumqi,Xinjiang 830012,China
4.China Shaanxi Well-facilitated Farmland Construction Group Co. ,Ltd,Xi’an,Shaanxi 710000,China
Objective The spatiotemporal variation of agricultural carbon emissions and its main influencing factors in the Yellow River basin were scientifically evaluated to predict the future emission trend, and provide data support and decision-making reference for formulating agricultural carbon emission reduction policies and regional collaborative governance plans. Methods The agricultural carbon emissions from 2001 to 2021 were selected from nine provinces of the Yellow River basin, the STIRPATextended model(stochastic impacts by regression on population, affluence and technology) was used to analyze the driving factors, and the GM (1,1) model was used for forecasting. Results ① Significant differences were observed in agricultural carbon emissions among provinces and regions in the Yellow River basin, and the agricultural carbon emissions in major grain-producing areas were significantly higher than those in other provinces. ② Agricultural carbon emissions in the Yellow River basin first increased and then decreased over time, showing an overall ‘inverted U-shape’. The quarter-on-quarter growth rate showed a fluctuating rise in the early stage and then began to decline slowly after 2012 until a negative growth in 2017, indicating that policy intervention played an important role in agricultural carbon emission reduction. ③ Among the driving factors of agricultural carbon emissions in the Yellow River basin, agricultural production efficiency, economic development level, urbanization level, agricultural land management scale and agricultural mechanization level were the main factors leading to the increase of agricultural carbon emissions. The energy intensity of agricultural machinery had a restraining effect on carbon emissions, and the technological progress may offset part of the carbon emission reduction effect due to the ‘rebound effect’. ④ From 2022 to 2035, agricultural carbon emissions in the Yellow River basin may exhibit a downward trend, while maintaining a high level, and agricultural carbon emission reduction pressure would remain large. Conclusion The potential of agricultural carbon emission reduction in the Yellow River basin has not been fully realized, and agricultural carbon emission reduction should be further achieved by accelerating the application of new energy technologies, popularizing green and low-carbon production technologies, building a whole-chain management system of agricultural waste, promoting the optimization of agricultural structure and the innovation of the coupling model of planting and breeding, and building a collaborative development system of ecological and organic agriculture based on local conditions. At the same time, it is necessary to establish a dynamic balance mechanism between economic growth and emission reduction targets to avoid the risk of carbon emissions rebound caused by extensive development.
文献参数: 白桦锐, 裴健宇, 王琪, 等.黄河流域九省区农业碳排放的驱动因素及预测[J].水土保持通报,2025,45(4):244-255. Citation:Bai Huarui, Pei Jianyu, Wang Qi, et al. Driving factors and prediction of agricultural carbon emissions in nine provinces of Yellow River basin [J]. Bulletin of Soil and Water Conservation,2025,45(4):244-255.
先前学者对碳排放的研究依据不同,对农业碳排放指标的选取和方法也存在差异。因此,本文参考已有学者对农业碳排放的有关研究[6-7,22],从农地利用活动、农作物种植、畜禽养殖、秸秆焚烧4个方面完成对黄河流域农业碳排放量的有效测度。此外,根据IPCC第四次评估报告,将农业活动中排放的N2O和CH4两大类温室气体按照1 t CH4=6.818 t C和1 t N2O=81.273 t C的折算比例进行计算,以此构建黄河流域农业碳排放因子测算体系。农业碳排放测算公式如下:
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