长江流域资源与环境 >> 2024, Vol. 33 >> Issue (4): 895-908.doi: 10.11870/cjlyzyyhj202404018

• 生态环境 • 上一篇    

格网尺度石漠化山区国土空间碳源/汇核算及碳失衡分区研究

陈彦君1,赵筱青1*,普军伟2,陶俊逸1,徐逸飞1,顾泽贤2,陶兰初3   

  1. (1.云南大学 地球科学学院 云南 昆明 650500;2.云南大学 国际河流与生态安全研究院 云南 昆明 650500;3.中国地质调查局昆明自然资源综合调查中心 云南 昆明 650111)
  • 出版日期:2024-04-20 发布日期:2024-04-28

Research on Territorial Space Carbon Source/Sink Accounting and Carbon Imbalance Zoning in Rocky Desertification Mountainous Areas at Grid Scale

CHEN Yan-jun1, ZHAO Xiao-qing1, PU Jun-wei2, TAO Jun-yi1, XU Yi-fei1, GU Ze-xian2,TAO Lan-chu3   

  1. (1.School of Earth Sciences, Yunnan University, Kunming 650500, China;2.Institute of International River and Ecological Security, Yunnan University, Kunming 650500, China;3.Kunming Comprehensive Natural Resources Survey Center of China Geological Survey, Kunming 650111, China) 
  • Online:2024-04-20 Published:2024-04-28

摘要: 在中国碳中和战略背景下,制定适应国土空间功能的低碳发展策略,对中国县域实现绿色低碳发展具有重要意义。以滇西北石漠化山区玉龙县为研究区,采用碳排放系数法、生命周期法、净生态系统生产力估算方法,核算国土空间功能的碳源排放量、碳汇吸收量,分析其碳源/汇的时空变化特征;通过分析碳源/碳汇效益,识别碳失衡空间,构建格网尺度下县域国土空间碳失衡综合分区。研究结果:(1) 2010~2020年玉龙县以生态空间为主,生活空间扩张迅速。(2) 玉龙县三生空间碳源/汇增加,但碳源排放量增长剧烈,呈现西高东低和东南高值聚集的空间分布特征。(3) 2010~2020年碳源/汇效益有较大的提升,且有明显的空间差异;玉龙县碳失衡空间占总面积的47.30%,以碳源失衡为主。(4) 格网尺度下国土空间碳失衡综合分区划分为生态碳汇功能区、低碳优先发展区、生态增汇发展区、生产高碳优化区、生活高碳控制区等五个区,并提出县域内部协同减排的差异性对策建议。研究结论:格网尺度下,玉龙县近十年国土空间一直以生态空间为主,但生活空间扩张加快;三生空间碳源/汇增加,但碳源量远大于碳汇量,工矿生产空间与生活空间碳排放量增长量远超生态空间的碳吸收增长量;碳源/汇效益呈上升趋势,空间上呈东西侧高,东南低的特征。碳失衡空间占国土面积的47.30%;根据低碳发展、减排增汇划分出5个国土空间功能碳失衡综合分区,并提出了低碳发展对策,为中国县域低碳国土空间规划提供参考。

Abstract: In the context of China's carbon neutrality strategy, formulating a low-carbon development strategy that adapt to the territorial space functions is of great significance to realizing green development in Chinese counties. The study took Yulong County, a rocky desertification mountainous area in northwest Yunnan, as the study area. he carbon emission coefficient, life cycle, and net ecosystem productivity estimation methods to calculate the carbon source/sink of the territorial space and analyze spatiotemporal characteristics; by analyzing the carbon source/ sink benefits, the carbon imbalance space and constructed at grid scale. Results: (1) From 2010 to 2020, Yulong County was dominated by ecological space, and living space expanded rapidly. (2) The carbon source and sink of the production-living-ecological space increased. The carbon source increased dramatically, showing the spatial distribution characteristics of "High in the west and low in the east" and high values concentrated in the southeast. (3) From 2010 to 2020, the carbon source/sink efficiency dramatically improved, and there were  obvious spatial difference; the carbon imbalance space accounted for 47.30%, with the carbon source imbalance dominating. (4) Carbon imbalance at grid scale was divided into five zones: ecological carbon sink functional zone, low-carbon priority development zone, ecological carbon sink enhancement zone, production high-carbon optimization zone, and living high-carbon control zonedifferentiated countermeasures for collaborative emission reduction within the county.  At grid scale, the territorial space in northwest Yunnan dominated by ecological space in the past ten years,  the expansion of living space accelerated. Carbon source and sink in production-living-ecological space increased, but sources were much greater than sink; the growth of carbon emissions in industrial and mining production space and living space far exceeded the carbon absorption in ecological space; the carbon source and sink efficiency was on the rise and was higher in the east and west and lower in the southeast. The carbon imbalance space accounted for 47.30%; based on low-carbon development, emission reduction, and sink increaseive carbon imbalance comprehensive zones were divided, and low-carbon development countermeasures were proposed to provide a reference for China's county low-carbon territorial space planning.

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