长江中游城市群耕地利用碳排放“总量-强度”的空间关联特征
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F323.211,X321

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教育部人文社会科学研究青年项目“乡村振兴战略背景下中国耕地轮作休耕的响应与适应机制研究”(19YJC790054);中央高校基本科研业务费项目(CCNU20QN036)


Spatial Correlation Characteristics of Amount and Intensity of Carbon Emissions Resulting from Cultivated Land Utilization in an Urban Agglomeration in Middle Reaches of Yangtze River
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    摘要:

    [目的] 揭示长江中游城市群耕地利用碳排放“总量—强度”的空间关联特征,为实现高质量发展提供理论和现实指导。[方法] 采用IPCC系数法、总体耦合态势模型和双变量空间自相关法分析相关指标。[结果] ①2010—2013年长江中游城市群耕地利用碳排放总量呈显著上升趋势,年均增率为2.0%;2014—2020年则呈下降趋势,年均降幅为2.6%,且碳排放的市域间差异趋于扩大。②长江中游城市群耕地利用的碳排放强度总体处于波动下降态势,年均降幅达4.9%,但受边际递减效应影响,碳排放强度进一步改善的难度不断加大。③2010—2020年长江中游城市群耕地利用碳排放量与碳排放强度的加权中心距离从0.571 km减少到0.312 km,移动方向夹角总体也呈减小趋势,总体耦合态势不断加强。④2010—2020年长江中游城市群耕地利用碳排放总量与强度存在显著空间正相关,同时存在空间异质性。聚集态势主要表现为武汉城市圈“双高”聚集区和环长株潭城市群“双低”聚集区。[结论] 应采取差异化手段对耕地利用碳排放总量与强度进行分区调控,完善碳排放总量和强度“双控”机制。

    Abstract:

    [Objective] The spatial correlation characteristics of the amount and intensity of carbon emissions resulting from cultivated land utilization in an urban agglomeration in the middle reaches of the Yangtze River were analyzed in order to provide theoretical and practical guidance for achieving regional high-quality development.[Methods] The IPCC coefficient method, the overall coupling analysis model, and the bivariate spatial autocorrelation method were used in this study.[Results] ① The amount of carbon emissions resulting from cultivated land utilization in the study area showed a significant upward trend during 2010-2013, with an average annual growth rate of 2.0%. Carbon emissions showed a downward trend during 2014-2020, with an average annual decline of -2.6%. During the study period, the difference between the carbon emissions of each city tended to expand. ② The intensity of carbon emissions resulting from cultivated land utilization in the study area showed a fluctuating downward trend, with an average annual decline of -4.9%. However, due to the marginal decline effect, it was increasingly difficult to further improve the carbon emission intensity. ③ During the study period, the center-weighted distance between the amount and intensity of carbon emissions resulting from cultivated land utilization in the study area decreased from 0.571 km to 0.312 km. The included angle between their moving directions also showed a general declining trend, and the coupling situation continued to strengthen. ④ From 2010 to 2020, there was a significant spatial positive correlation between the amount and intensity of carbon emissions resulting from cultivated land utilization in the study area, and there was also spatial heterogeneity in this effect. The agglomeration situation was mainly manifested in the "high-high" and "low-low" area, which was represented by the Wuhan urban agglomeration and the Changsha-Zhuzhou-Xiangtan urban agglomeration, respectively.[Conclusion] Different regulation measures should be taken according to the spatial correlation pattern between the amount and intensity of carbon emissions resulting from cultivated land utilization. The "dual control" mechanism for the amount and intensity of carbon emissions resulting from cultivated land utilization is also an important consideration.

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熊子昕,匡兵,柯楠.长江中游城市群耕地利用碳排放“总量-强度”的空间关联特征[J].水土保持通报,2023,43(3):406-413

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  • 收稿日期:2022-09-26
  • 最后修改日期:2022-11-11
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  • 在线发布日期: 2023-08-16
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