Xu Hongwen, Tao Xiaorui, Lu Yan, Wang Yuexiang, Li Hui, Ye Zhengwei
Key Research Base of Philosophy and Social Sciences in Jiangsu Universities, Research Institute of Huai River Eco-economic Belt, Huaiyin Normal University, Huaian, 223300, China.
School of Geography and Planning, Huaiyin Normal University, Changjiang West Road, 111#, Huaian, 223300, China.
Sci Rep. 2025 Jan 25;15(1):3266. doi: 10.1038/s41598-025-86769-3.
Carrying out carbon budget assessment and carbon compensation zoning research from inter-regional perspective can actively boost the formulation of green, low-carbon transformation strategies, guiding the flow of compensation credits, promoting regional equity and sustainable development, and realizing China's "dual-carbon" goal. Huai River Eco-economic Belt is considered to be a typical example of how land use affects carbon budget due to its more drastic land changes. The paper uses the carbon emission coefficient method to analyze the carbon revenue and expenditure of kinds of land-use patterns, and constructs the carbon compensation model with the help of the carbon budget concentration index and the dominant comparative advantage index, and puts forward the carbon compensation zoning program. Results indicate that (1) Carbon emissions in the Huai River Eco-economic Belt are generally showing a downward trend, and carbon absorption rises modestly. (2) Carbon emissions exhibit a spatial distribution of higher in the western, northern and eastern regions and lower in the center zone, with large differences in carbon absorption among cities in the same year. (3) Carbon compensation types in the Huai River Eco-economic belt include 7 payment zones, 5 balanced zones and 14 compensated zones, which can be finally classified into 5 categories of carbon compensation space optimization areas by combining with the Normalized Revealed Comparative Advantage Index and model for zoning of carbon compensation. Our study enriches practical approaches to reducing carbon emissions through land regulation from inter-regional scales.
从区域间视角开展碳预算评估和碳补偿分区研究，能够积极推动绿色低碳转型战略的制定，引导补偿信用流动，促进区域公平与可持续发展，助力中国实现“双碳”目标。淮河生态经济带因土地变化较为剧烈，被视为土地利用影响碳预算的典型案例。本文运用碳排放系数法分析各类土地利用模式的碳收支情况，借助碳预算集中度指数和优势比较指数构建碳补偿模型，并提出碳补偿分区方案。结果表明：（1）淮河生态经济带碳排放总体呈下降趋势，碳吸收量适度上升。（2）碳排放呈现西部、北部和东部地区较高、中部地区较低的空间分布特征，同年各城市间碳吸收差异较大。（3）淮河生态经济带碳补偿类型包括7个支付区、5个平衡区和14个受偿区，结合归一化显示性比较优势指数和碳补偿分区模型最终可划分为5类碳补偿空间优化区。本研究丰富了跨区域尺度通过土地调控减少碳排放的实践路径。
