当前位置:首页>南京>南京大学地理与海洋科学学院黄贤金团队在Cities发文揭示土地利用视角下成渝城市群碳代谢特征:基于多尺度和多情景模拟框架

南京大学地理与海洋科学学院黄贤金团队在Cities发文揭示土地利用视角下成渝城市群碳代谢特征:基于多尺度和多情景模拟框架

  • 2026-07-07 15:18:06
南京大学地理与海洋科学学院黄贤金团队在Cities发文揭示土地利用视角下成渝城市群碳代谢特征:基于多尺度和多情景模拟框架

文章信息

原文标题:

Exploring carbon metabolism from perspective of land use in Chengdu-Chongqing urban agglomeration, China: A multi-scale and multi-scenario analysis framework

原文作者:

向书江,黄贤金*,艾林·阿婷艾,董又铭,李美平,林娜娜,易则宇

作者单位:南京大学地理与海洋科学学院

期刊:Cities

DOI:https://doi.org/10.1016/j.cities.2026.106773

文章导读

全球气候变暖已成为21世纪最严峻的环境与发展挑战之一。碳排放所引发的温室效应是导致全球变暖的主要因素,碳减排已成为国际社会的共识和各国政府的重要战略目标。在此背景下,城市作为人口高度集聚、经济活动最为密集的空间单元,其碳排放总量占全球的70%以上,其碳代谢过程对全球碳循环系统中的重要环节。快速城镇化和工业化推动建设用地持续扩张,同时也挤占耕地、林地、草地和水域等生态空间,改变城市碳排放和碳吸收格局以及相关碳流,从而影响城市碳代谢过程。因此,如何从土地利用视角刻画城市群碳代谢过程,识别不同土地利用类型之间的碳流关系及其空间分异规律,成为支撑“双碳”目标实现和低碳空间治理的重要科学问题。

尽管已有研究探讨了土地-碳代谢过程,但当前研究主要集中于单一尺度和历史时期的评估,缺乏对多尺度与多情景的系统分析。研究不足主要体现在以下几个方面:(1)研究尺度单一、缺乏多尺度分析。已有研究多以单一城市为研究对象,往往忽视了多尺度下土地利用变化对碳代谢过程的影响过程。(2)情景模拟有限,缺乏多情景分析。已有研究普遍局限于历史时序分析,对城市群在不同情景下的碳代谢关注不足。(3)城市群区域关注不足。已有研究仅反映城市个体,难以刻画城市群层面的碳代谢网络。特别是在生态系统脆弱、城市化和工业化快速发展的中国西部地区的城市群缺乏案例研究。为弥补这一不足,本文以成渝城市群为案例,构建多尺度—多情景耦合的碳代谢分析框架,以期揭示成渝城市群土地利用变化对碳代谢格局的综合影响。

鉴于此,本文以成渝城市群为研究区,基于2000~2020年土地利用、能源消耗、社会经济等多源数据,综合运用碳代谢核算、生态网络分析、标准差椭圆和Markov-PLUS模型,构建“碳代谢核算—多尺度分析—多情景预测”的综合分析框架,全面揭示成渝城市群碳流变化、碳代谢效应水平特征。

Fig. 1. Research framework of this study.

Fig. 2. Changes of carbon flow types in CCUA from 2000 to 2020.

Fig. 3. Ecological relationship of carbon metabolism in CCUA from 2000 to 2020.

Fig. 4. Proportion of ecological relationship of carbon metabolism and EMI in CCUA from 2000 to 2020.

Fig. 5. Raincloud visualization of EMI in CCUA at multi-scale from 2000 to 2020.

Fig. 6. Spatial pattern of EMI in CCUA at multi-scale from 2000 to 2020.

Fig. 7. SDE and GC migration of EMI in CCUA at multi-scale from 2000 to 2020.

Fig. 8. Ecological relationship of carbon metabolism and EMI in CCUA at multi-scenario.

Fig. 9. Spatial pattern of EMI in CCUA under multi-scenario in 2030

Fig. 10. SDE and GC migration of EMI in CCUA under multi-scenario in 2030.

研究结果

(1)2000~2020年成渝城市群积极碳流始终小于消极碳流,净碳流一直为负(-13.57~-60.02 Tg),呈现“先恶化再改善”的变化趋势。成渝城市群碳代谢生态关系占比排序为:限制和掠夺关系(50%)>竞争关系(25%~39%)>共生关系(11%~25%)。成渝城市群碳代谢生态关系互惠指数(EMI)呈现持续的增长态势,从0.78提升至1.28。

(2)多尺度分析揭示了碳代谢时空异质性。在数值分布方面,格网尺度下碳代谢生态效用指数分布最为分散,峰值多样且上限最高。在空间格局方面,县域和格网尺度则表现出空间分异和多点扩散特征。在标准差椭圆结果和重心迁移轨迹方面,各尺度下碳代谢生态效用指数分布的标准差椭圆均由大到小收敛,重心均出现了向西部区域迁移趋势。

(3)2020~2030年3种不同发展情景下,成渝城市群碳代谢生态关系结构与效用指数表现出明显差异。从EMI指数看,低碳发展情景(0.730)>自然发展情景(0.684)>高碳发展情景(0.600)。自然发展情景(NDS)与高碳发展情景(HDS)的标准差椭圆范围较大,空间分布更为离散。低碳发展情景(LDS)的标准差椭圆呈现一定的收敛趋势,空间分布更加集中。从重心迁移来看,3种发展情景下碳代谢生态效用指数的空间重心相对稳定,均集中于资阳及其重庆。

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  1. CONNECT:[ UseTime:0.000748s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000830s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000301s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000249s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000485s ]
  6. SELECT * FROM `set` [ RunTime:0.000195s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000545s ]
  8. SELECT * FROM `article` WHERE `id` = 578343 LIMIT 1 [ RunTime:0.000552s ]
  9. UPDATE `article` SET `lasttime` = 1783824930 WHERE `id` = 578343 [ RunTime:0.008896s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000354s ]
  11. SELECT * FROM `article` WHERE `id` < 578343 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000457s ]
  12. SELECT * FROM `article` WHERE `id` > 578343 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000406s ]
  13. SELECT * FROM `article` WHERE `id` < 578343 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001529s ]
  14. SELECT * FROM `article` WHERE `id` < 578343 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001024s ]
  15. SELECT * FROM `article` WHERE `id` < 578343 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000999s ]
0.090802s