| 京津冀县域碳收支格局及碳平衡分区优化 |
| 摘要点击 643 全文点击 84 投稿时间：2024-03-31 修订日期：2024-05-22 |
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| 中文关键词 碳收支 碳排放经济贡献系数（ECC） 碳生态承载系数（ESC） 碳平衡 京津冀 |
| 英文关键词 carbon budget economy contributive coefficient（ECC） ecological support coefficient（ESC） carbon balance Beijing-Tianjin-Hebei |
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| 中文摘要 |
| 京津冀地区作为重要的“首都经济圈”,确定县域碳平衡分区对其区域低碳发展、“双碳”战略的达成具有重要意义. 基于中国碳核算数据库和净生态系统生产力（NEP）数据,探究了京津冀县域2002~2020年碳排放和碳吸收时空分布格局,并引入碳排放经济贡献系数（ECC）和碳生态承载系数（ESC）分析了京津冀各县的能源利用效率和碳汇能力,最后融合国土空间规划中的主体功能区划优化了京津冀县域碳平衡分区. 结果表明：①2002年、2011年和2020年京津县域碳排放均呈“东南高,西北低”空间分布,而碳吸收高值区域集中分布于西北部张家口和承德市部分县域. ②ECC和ESC在空间分布上具有鲜明的空间异质性,ECC以北京为中心向周围不断降低,系数呈逐年增加的态势；ESC表现为北高南低的空间分布,随着可持续发展战略的实施在逐年改善. ③融合主体功能区划后的县域碳平衡分区进一步细化为16个子区,其中低碳保持区-重点生态功能区主要集中于西北部,分布范围较广,但数量上呈下降趋势；而经济发展区-农产品、碳汇发展区-农产品主产区分布较为稳定,综合优化区-农产品主产区分布于地区东南部,分布数量最多. 研究结论为京津冀碳排放及经济发展分区管控提供了精准数据支撑. |
| 英文摘要 |
| As an important “capital city economic circle,” the determination of county carbon balance zones in the Beijing-Tianjin-Hebei counties is of great significance to its regional low-carbon development and achievement of the “dual-carbon” strategy. This study explores the spatial and temporal distribution patterns of carbon emissions and sequestration in the Beijing-Tianjin-Hebei counties from 2002 to 2020 based on the China carbon accounting database （CAD） and net ecosystem productivity （NEP） data. It further introduces the economy contributive coefficient （ECC） and ecological support coefficient （ESC） to analyze the energy efficiency and carbon sequestration capacity of the Beijing-Tianjin-Hebei counties, followed by the integration of the main functional areas （MFAs） of the territorial spatial planning. In this study, the carbon balance zoning of the Beijing-Tianjin-Hebei counties was optimized. The results showed that： ① In 2002, 2011, and 2020, the carbon emissions in the counties of Beijing and Tianjin showed a spatial distribution of “high in the southeast and low in the northwest,” and the areas with high carbon sequestration were concentrated in the northwestern part of the counties of Zhangjiakou and Chengde. ② The ECC and ESC exhibited distinctive spatial heterogeneity in their spatial distribution, with ECC showing a decrease from Beijing to the surrounding area and the coefficient increasing with passing years. ESC showed a high spatial distribution in the north and low in the south, which showed improvement with passing years with the implementation of the sustainable development strategy. ③ The county carbon balance zoning after integrating the main function zoning was further refined into 16 sub-zones, where the low-carbon maintenance zone-key ecological function zone was mainly concentrated in the northwest, with a wider distribution but decreasing trend in quantity. Further, the distribution of the economic development zone-agricultural products and the carbon sink development zone-agricultural products main production zone was relatively stable, and the comprehensive optimization zone-agricultural products main production zone was mainly located in the southeastern part of the region, with a the number being the largest. These findings provides accurate data supporting the control of carbon emissions and economic development zoning in the Beijing-Tianjin-Hebei counties. |
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