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基于2011—2019年中国地级市面板数据,运用空间杜宾模型考察数字基础设施密度对碳排放的影响。研究发现,城市碳排放呈显著空间集聚,高值集中于京津冀、长三角和粤港澳大湾区;数字基础设施密度提升带来隐性能耗,总体上加剧本地碳排放;邻近地区的数字密度也产生正向溢出效应。中部地区因物流与交通数字化协同较强,呈现抑制作用。结果揭示了数字化进程中效率红利与环境成本并存的现实,为区域差异化低碳政策与算力布局优化提供依据。

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