【摘要】 探索土地利用碳排放的空间特征演化对制定区域化减排政策具有重要意义。利用重心模型和空间自相关模型,对我国2009—2016年土地利用碳排放的空间特征演变进行了研究。结果表明:①土地利用碳排放总量由2. 64×10~9t增长到3. 35×10~9t,地均排放量由1038. 42t/km~2增长到1189. 83t/km~2;强度在研究期内整体呈下降趋势,截至研究期末排放强度下降到0. 55t/万元。②排放总量和强度重心迁移方向一致,总量以西移为主且速度趋缓,强度以北移为主且速度趋强;地均排放量重心总体向西南迁移。③排放总量、地均排放量和强度均有较强的空间正相关关系,空间集聚显著。排放总量"热点"区稳定,"冷点"区由新疆和四川两地向川贵一带变动;地均排放量和强度的"热点"区与"冷点"区均相对稳定。因此,减排增效政策着力点应往西部偏移,积极引导西部地区发展低碳经济。更多还原

【Abstract】 Exploring the spatial characteristics of land use carbon emissions was of great significance for the formulation of regionalized emission reduction policies. This paper used the gravity center model and the spatial autocorrelation model to analyze the spatial characteristics of the carbon emission of land use in China from 2009 to 2016. It showed that: ①The total land use carbon emissions increased from 2. 90 × 10~9 t to 3. 35 × 10~9 t during the study period. The emission per unit area rose from 1038. 42 t/km~2 to 1189. 83 t/km~2. The carbon emission intensity of land use showed a downward trend during the same time,and in 2016,the carbon emission intensity of land use dropped to 0. 55 t per 10000 yuan. ②The direction of movement of gravity center of the total amount and the intensity of land use carbon emissions were consistent in mian direction,but the difference was that the total amount’s gravity center moved to the northwest,mainly westward,however,the intensity’gravity center moved to the northwest at a larger angle,mainly northward. On the other hand,the moving speed of the total was slowing down,but the moving speed of the intensity was accelerated. The center of gravity of the unit area was fluctuating,which migrated to the southwest in general. ③The total amount and intensity of land use carbon emissions in China had a strong spatial autocorrelation,both of spatial agglomeration was significant. The total"hot spot"area was stable,but its"cold spot"area changed from Xinjiang and Sichuan to Sichuan and Guizhou. The"hot spot"and"cold spot"areas of the emission per unit area and intensity both were relatively stable. The low-carbon economy should be actively developed in the western China. According to those conclusions,the efforts to reduce emissions and increase efficiency should be strengthened and actively guide the development of a low-carbon economy in the western region of China.更多还原