当前位置:首页>南京>南京信息工程大学梁涵玮副教授团队最新发文!中国农业碳排放效率及其区域趋同:土地利用模式与经济因素的作用

南京信息工程大学梁涵玮副教授团队最新发文!中国农业碳排放效率及其区域趋同:土地利用模式与经济因素的作用

  • 2026-06-22 01:32:10
南京信息工程大学梁涵玮副教授团队最新发文!中国农业碳排放效率及其区域趋同:土地利用模式与经济因素的作用

文章基本信息

  • 期刊:Land Use Policy

  • 英文题目:Agricultural carbon emission efficiency and its regional convergence in China: Role of land use modes and economic factors

  • 中文题目:中国农业碳排放效率及其区域趋同:土地利用模式与经济因素的作用

  • 发表时间:2026年

  • 文章链接:https://doi.org/10.1016/j.landusepol.2026.108125

摘要

中国农业部门是全球碳排放的主要来源之一,因此提高农业碳排放效率(ACEE)对于实现气候和粮食安全目标至关重要。有别于传统研究中常假设存在单一全国性演变路径的做法,本研究通过土地利用模式的视角,探讨农业碳排放效率的分化收敛动态,以描绘其长期演变轨迹。通过对2004年至2020年的省级面板数据应用“收敛俱乐部”方法,我们否定了存在单一稳态的假设,而是识别出五个具有异质均衡路径的收敛俱乐部,以及一小部分非收敛省份。研究结果表明,农业土地利用模式起着基础性的筛选机制作用:虽然多元化系统通常有助于形成更高效率的均衡状态,但专业化生产基地尽管具备规模优势,却常常面临效率瓶颈。此外,不同群体的效率驱动因素存在显著差异:在高效率地区,固定资产投资失衡制约了效率的进一步提升;而在大多数群体中,城乡收入差距的缩小则始终有助于提高效率。这些发现强调了制定针对不同群体、因地制宜的战略的必要性,这些战略应将生产体系、土地利用模式和要素投入与区域实际情况相协调,以促进农业可持续发展,并增强中国对全球减碳的贡献。

研究框架

我们构建了一个时空框架,用于追踪中国各省农业碳排放效率的演变。该研究的主要创新之处在于,根据农业碳排放效率的转型动态将各省划分为不同的“收敛组”,并从土地利用的角度阐释各组特有的收敛驱动因素。该设计揭示了各区域农业碳排放效率的演变轨迹,并量化了土地利用模式及相关经济因素如何塑造收敛过程,为差异化、因地制宜的政策设计提供了依据,同时也为面临类似减排与粮食安全权衡困境的其他大型、异质性农业经济体提供了可借鉴的模板。

本研究采用结构化的方法论框架,评估中国各省的农业碳排放效率,如图2所示。该方法首先利用详细的碳排放数据集,准确评估各省的基准农业碳排放效率。随后运用俱乐部收敛技术,根据各省的农业碳排放效率模式对其进行分类,从而展现农业部门内部多样化的效率动态。最后阶段将定量研究结果与理论见解相结合,通过分析农业用地模式及农业投入的综合影响,揭示农业生产方式与碳效率之间的复杂互动关系。这种多维度的研究方法不仅阐明了各省农业生产方式的差异,同时也旨在为制定符合当地实际的针对性策略提供实证依据。

未来展望

本研究在中国乡村振兴和城市发展的背景下对农业碳排放效率的考察表明,存在显著的区域差异,同时也揭示了减排的潜在路径。尽管如此,仍需解决若干局限性,并提出未来研究的建议:

(1)数据细分程度

本研究在农业碳排放核算方面存在一个显著局限,即遗漏了若干次要排放源,例如畜禽粪肥施用、温室供暖用煤以及谷物干燥能耗。排除这些项目主要是由于统计数据细分程度的限制,以及省级官方年鉴中缺乏稳定的长期区域数据。尽管这些遗漏可能导致总排放量被轻微低估——特别是在温室种植或畜牧业密集的地区——但当前边界在所有省份的一致应用确保了所识别的“趋同组”具有内部有效性。未来的研究可利用专门的行业调查或生命周期评估(LCA)数据库,以优化这些核算边界,并提高区域能效基准的精确度。

(2)收敛方法

虽然“俱乐部收敛法”成功地揭示了不同地区之间的共同收敛模式,但研究同时也表明,收敛的稳定性存在差异。这些差异表明,尽管该方法有效,但可能无法完全反映复杂的区域农业动态。完善这一方法或探索替代方法,有助于在未来分析中更有效地捕捉这些复杂性。

(3)分析范围

本研究为评估与农业碳排放效率相关的因素并加以解释提供了一个有价值的框架,但其研究范围仍较为宽泛,主要侧重于省级和俱乐部层面的分析。更细致的研究——尤其是那些探讨市、县层面差异的研究——或许能揭示出提升农业碳排放效率的更具地方特色的策略,同时考虑到即使在同一省内也可能存在显著差异的具体自然和人为因素。

展望未来,本研究为探索农业生产力与生态可持续性之间微妙平衡的后续研究奠定了基础。未来的研究应致力于:(1) 纳入更详细的数据,以涵盖影响农业碳排放效率的更广泛变量,例如技术采用率、具体的农业实践以及地方环境政策;(2) 将当前的分析框架应用于更细致的分析层面,从而更好地理解省内差异及其对国家农业战略的启示。

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原文请见:https://doi.org/10.1016/j.landusepol.2026.108125

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  1. CONNECT:[ UseTime:0.000470s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000708s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001292s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000296s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000488s ]
  6. SELECT * FROM `set` [ RunTime:0.000200s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000584s ]
  8. SELECT * FROM `article` WHERE `id` = 584944 LIMIT 1 [ RunTime:0.003491s ]
  9. UPDATE `article` SET `lasttime` = 1782902406 WHERE `id` = 584944 [ RunTime:0.003682s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000259s ]
  11. SELECT * FROM `article` WHERE `id` < 584944 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000454s ]
  12. SELECT * FROM `article` WHERE `id` > 584944 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000396s ]
  13. SELECT * FROM `article` WHERE `id` < 584944 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004414s ]
  14. SELECT * FROM `article` WHERE `id` < 584944 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000577s ]
  15. SELECT * FROM `article` WHERE `id` < 584944 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004718s ]
0.096688s