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| 淮河生态经济带粮食生产碳平衡与粮食安全协调性时空演变特征 |
| Spatiotemporal evolution characteristics of coordination between grain carbon emissions and food security in the Huaihe River Eco-Economic Belt |
| Received:May 22, 2025 |
| DOI：10.13254/j.jare.2025.0469 |
| 中文关键词: 粮食碳排放;粮食安全;耦合协调;标准差椭圆;淮河生态经济带 |
| 英文关键词: grain carbon emission;food security;coupling coordination;standard deviation ellipse;Huaihe River Eco-Economic Belt |
| 基金项目:河南省高等学校重点科研项目（26A610016）；信阳生态研究院开放基金项目（2023XYMS14）；河南省科技计划项目（242400411062）；中国农业科学院创新工程（农业农业部环境保护科研监测所）项目 |
| Author Name | Affiliation | E-mail | | GAO Hui | School of Geographical Sciences, Xinyang Normal University, Xinyang 464000, China
Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution of Henan Province, Xinyang Normal University, Xinyang 464000, China
Xinyang Academy of Ecological Research, Xinyang 464000, China | | | LIU Tonghui | School of Geographical Sciences, Xinyang Normal University, Xinyang 464000, China
Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution of Henan Province, Xinyang Normal University, Xinyang 464000, China | | | YANG Yanying | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | yangyanying@caas.cn | | CHENG Qixian | School of Urban Construction and Intelligent Manufacturing, Dongguan City University, Dongguan 523419, China | | | LIU Xinran | School of Geographical Sciences, Xinyang Normal University, Xinyang 464000, China | | | YANG Yan | School of Geographical Sciences, Xinyang Normal University, Xinyang 464000, China
Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution of Henan Province, Xinyang Normal University, Xinyang 464000, China | |
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| 中文摘要: |
| 为探究淮河生态经济带粮食生产碳平衡与粮食安全的协调性特征，本研究基于2010、2014、2018、2022年数据，综合运用碳排放测算模型、粮食安全评价体系、耦合协调度模型、标准差椭圆等方法，系统解析其时空演变规律。结果表明：碳排放总量呈先增后减趋势，2022年较2010年减少5.01×105 t；碳吸收总量增长16.55%；净碳汇量提升23.27%，固碳潜力显著且差异明显；区域整体碳收支基本达到动态平衡。粮食安全水平总体上升，呈现西高东低空间分异特征，豫中南和皖东等地安全水平较高，苏北部分城市因耕地资源受限水平较低。粮食生产碳平衡与粮食安全协调水平整体提升，以中级协调为主，高值带集群分布于豫西、皖北及苏中境内。标准差椭圆显示协调水平呈东北-西南分布，重心具有向中西部偏移的趋势。 |
| 英文摘要: |
| To explore the coordination level and influencing factors between grain carbon emissions and food security in the Huaihe River Eco-Economic Belt, this study analyzed spatiotemporal evolution patterns using carbon emission calculation models, food security evaluation systems, coupling coordination degree models, and standard deviation ellipse based on data from 2010, 2014, 2018, and 2022. The results indicated that the total carbon emissions showed an initial increase followed by a decrease, with a reduction of 5.01×105 t in 2022 compared to 2010; carbon absorption increased by 16.55%, while the net carbon sink rose by 23.27%, indicating significant but uneven carbon sequestration potential. Overall, the region ′ s carbon budget had largely achieved a dynamic equilibrium. Food security levels generally improved, exhibiting a spatial pattern of higher in the west and lower in the east. Areas such as south-central Henan and eastern Anhui maintained relatively high food security, whereas parts of northern Jiangsu, constrained by limited arable land resources, recorded lower levels. The coordination between grain production carbon balance and food security improved overall, primarily at an intermediate level. High-value clusters were concentrated in western Henan, northern Anhui, and central Jiangsu. Standard deviation ellipse analysis revealed a northeast-southwest spatial distribution of coordination levels, with the center of gravity shifting toward the central and western regions. |
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