长江流域资源与环境 >> 2024, Vol. 33 >> Issue (7): 1474-1488.doi: 10.11870/cjlyzyyhj202407009

• 自然资源 • 上一篇    下一篇

长江中游地区土地利用碳收支空间关联及碳补偿分区

蔡鑫,叶长盛*,肖蔚,彭锦臣   

  1. (东华理工大学地球科学学院,江西 南昌 330013)
  • 出版日期:2024-07-20 发布日期:2024-07-18

Spatial Correlation and Carbon Compensation Zoning of Land  Use Carbon Budget in the Middle Reaches of Yangtze River

 CAI Xin, YE Chang-sheng, XIAO Wei,PENG Jin-cheng   

  1. (School of Earth Sciences, East China University of Technology, Nanchang 330013, China)
  • Online:2024-07-20 Published:2024-07-18

摘要: 在绿色低碳发展的背景下,开展土地利用碳收支空间关联与碳补偿分区研究,对于推动区域协同发展与协同治理,实现高质量发展具有重要意义。以市域为基本单元核算其碳收支量;构建引力模型、利用社会网络分析法深入分析长江中游地区碳收支整体与个体的空间关联关系与结构特征;借助SOM-K-means模型对长江中游地区开展碳补偿分区研究。结果表明:(1)2005~2020年间长江中游地区碳排量呈现上升趋势,由2.18×108t上升至3.01×108t,总体呈现“东高西低,中心最高”的空间分布特点;碳吸收量呈现波动态势,由2.75×108t变化至2.86×108t,整体呈现为由外逐内降低的“C”型空间分布格局。(2)整体视角下,碳排放与碳吸收的网络密度较低,具有较大的空间协作潜力挖掘;个体视角下,武汉市、九江市、岳阳市等地区处于碳排放网络的中心地位,在网络中也承担了“桥梁”作用;宜春市、常德市和吉安市等地区居于碳吸收网络的中心地位。碳收支网络中各节点的碳排放与碳吸收能力不相符,存在显著差异。(3)长江中游地区共分为12个支付区、13个平衡区和17个获补区,针对各类型区提出相应的低碳发展方向及策略。

Abstract: In the context of green and low-carbon development, research on the spatial correlation of land use carbon budget and carbon compensation zoning is of great significance for promoting regional coordinated development and governance and achieving high-quality development. In this study, the carbon budget of cities was calculated as the basic unit. The spatial correlation and structural characteristics of carbon budget in the middle reaches of Yangtze River were analyzed by using gravity model and social network analysis method. Using SOM-K-means model, carbon compensation zoning in the study area was carried out. The results showed that: (1) From 2005 to 2020, carbon emissions showed an upward trend, from 2.18×108t to 3.01×108t, with a spatial distribution of "higher in the east, lower in the west and highest in the center"; The carbon uptake fluctuated from 2.75×108t to 2.86×108t, showing a "C" pattern of spatial distribution decreasing from outside to inside. (2) From the overall perspective, the network density of carbon emission and carbon absorption was relatively low, which implied that there existed a large potential for spatial collaboration; From the individual perspective, Wuhan City, Jiujiang City, Yueyang City were in the center of the carbon emission network. These cities played the role of "bridge" in the network, while Yichun City, Changde City and Ji 'an City were in the center of the carbon absorption network. The carbon emission of each node in the carbon budget network was inconsistent with the carbon absorption capacity, showing significant differences. (3) Based on this study, the middle reaches of the Yangtze River was divided into three types of zone, including 12 payment zones, 13 balance zones and 17 replenishment zones. Corresponding low-carbon development directions and strategies were proposed for each type of zone.

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