利用熵值法、时空地理加权模型等方法探索不同类型收缩城市收缩特征因子对土地利用碳排放的影响作用及影响差异性,得到以下结论:首先,建设用地转入是收缩城市土地利用碳排放的主要来源,林地、草地的减少增加了碳排放压力。其次,不同类型收缩城市碳排放呈现不同规律,其中资源依赖型、综合型城市碳排放在2010年达到峰值后呈下降趋势,并于2015年重新进入增长状态;虹吸型、区位制约型城市碳排放呈现持续增长趋势。最后,城市显著的收缩特征因子也是影响城市碳排放的主要驱动因子,随着时间的发展,收缩现象从人口收缩转为多维度收缩,同时收缩城市碳排放驱动因子影响趋势从人口维度转向经济、投资维度。
In order to better guide the low-carbon development of different types of shrinking cities and supplement the existing carbon emission research gaps. The entropy method, GTWR model and other methods are utilized to explore the role of the shrinkage characterization factors of different types of shrinking cities in influencing the carbon emissions from land use and the differences in the influences, the main conclusions obtained are as follows. First,the diversion of built-up land is the main source of carbon emissions from land use in shrinking cities, and the reduction of forest land and grassland increases the pressure of carbon emissions. Secondly, carbon emissions of different types of shrinking cities show different patterns, among which resource-dependent and comprehensive cities declined after reaching the peak in 2010 and re-entered the growth state in 2015; carbon emissions of siphoning and location-constrained cities show a continuous growth trend. Finally, the significant shrinkage characterization factors of cities are also the main driving factors affecting urban carbon emissions, and the shrinkage phenomenon has changed from population to multi-dimensional contraction with the development of time, while the influence of the driving factor of carbon emissions in shrinking cities has shifted from the population dimension to the economic and investment dimensions.
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