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中国沙漠 ›› 2026, Vol. 46 ›› Issue (4): 1-11.DOI: 10.7522/j.issn.1000-694X.2025.00150

• •    下一篇

兰州-西宁城市群土地利用碳排放时空演变及驱动因素

王飞1,2(), 韩君1()   

  1. 1.兰州财经大学,统计学院,甘肃 兰州 730020
    2.兰州财经大学,金融学院,甘肃 兰州 730020
  • 收稿日期:2025-08-05 修回日期:2025-10-02 出版日期:2026-07-20 发布日期:2026-08-27
  • 通讯作者: 韩君
  • 作者简介:王飞(1982—)男,河北宁晋人,博士研究生,副教授,研究方向为西部生态与资源环境可持续。E-mail: wangfei@lzufe.edu.cn
  • 基金资助:
    甘肃省基础研究计划—软科学专项项目(24JRZA079);甘肃省教育厅高校教师创新基金项目(2024A-071);兰州财经大学科研项目(Lzufe2024C-007)

Spatiotemporal evolution and driving factors of land use carbon emissions in the Lanzhou-Xining Urban Agglomeration

Fei Wang1,2(), Jun Han1()   

  1. 1.School of Statistics /, Lanzhou University of Finance and Economics,Lanzhou 730020,China
    2.School of Finance, Lanzhou University of Finance and Economics,Lanzhou 730020,China
  • Received:2025-08-05 Revised:2025-10-02 Online:2026-07-20 Published:2026-08-27
  • Contact: Jun Han

摘要:

探究城市群土地利用碳排放的时空分异特征及其驱动机制,对推动区域土地集约利用与低碳发展具有重要意义。基于遥感、能源、经济等多源数据,利用碳排放系数法、夜间灯光反演和LMDI分解模型,系统分析了2000—2022年兰州-西宁城市群土地利用碳排放的动态演变特征及驱动因素。结果表明:(1)兰西城市群土地利用结构以草地和耕地为主,其次为林地、水域、未利用地,最后是建设用地;年净变化率表现为建设用地(2.94%)>未利用地(0.81%)>水域(0.50%)>林地(0.23%)>草地(0.05%)>耕地(-0.63%)。(2)土地利用直接碳排放呈下降趋势,年均减少3.26%;建设用地碳排放与土地利用总碳排放持续增加,年均增速分别为4.27%与4.26%;建设用地是最主要碳源,土地利用总碳排放高值区集中于甘肃省辖县域及西宁市-乐都区核心带。(3)经济发展水平(主导因素)和建设用地规模是土地利用总碳排放增加的核心驱动因素,累积贡献碳排放增量32 104.72万t;碳排放强度(主控因子)和土地利用效率则具有显著抑制效应,累积促使碳排放下降25 244.80万t。因此,提升土地利用效率,严控经济发展过程中的建设用地扩张是推动兰西城市群减排的关键路径。

关键词: 土地利用碳排放, 时序变化, 空间差异, 驱动因素, 兰州-西宁城市群

Abstract:

Understanding the spatiotemporal differentiation characteristics and driving mechanisms of land use carbon emissions in urban agglomerations is critical for promoting regional land intensive use and low-carbon development. Based on multi-source data such as remote sensing, energy, and economic statistics, adopting carbon emission coefficient methods, nighttime light remote sensing inversion, and the Logarithmic Mean Divisia Index (LMDI) decomposition model, this study systematically analyzes the spatiotemporal evolution patterns and driving factors of land use carbon emissions in the Lanzhou-Xining Urban Agglomeration from 2000 to 2022. The results show that: (1) The land use structure was dominated by grassland and cropland, followed by forest, water bodies and barren land, finally construction land. In terms of net change rate, the order was construction land (2.94%) > barren land (0.81%) > water bodies (0.50%) > forest (0.23%) > grassland (0.05%) > cropland (-0.63%). (2) Direct carbon emissions from land use showed a declining trend, with an average annual decrease of 3.26%. In contrast, carbon emissions from construction land and total land use carbon emissions showed continuous growth, with average annual increases of 4.27% and 4.26% respectively. Construction land was the main carbon source, and regions with high carbon emissions were concentrated in the counties administered by Gansu Province and the core zone of Xining-Ledu. (3) The economic development level (the primary contribution factor) and construction land expansion were the primary positive drivers for the increase in total land use carbon emissions, which cumulatively contributing to the total land use carbon emission increase of 32 104.72×104 t. While carbon emission intensity (the dominant suppressing factor) and land use efficiency played significant inhibitory roles, which cumulatively leading to the total land use carbon emission decrease of 25 244.80 × 104 t. Therefore, enhancing land use efficiency and strictly controlling carbon emission growth resulting from construction land expansion during economic development are crucial pathways for achieving emission reduction in the Lanzhou-Xining Urban Agglomeration.

Key words: land use carbon emissions, temporal evolution, spatial heterogeneity, driving factors, Lanzhou-Xining Urban Agglomeration

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