面向碳增汇的国土空间格局优化:理论框架与行动逻辑

Optimizing territorial spatial pattern for carbon sink growth:Theoretical framework and action logic

国土空间开发利用模式决定了区域陆地生态系统碳收支的动态格局,建立面向陆地生态系统碳汇能力提升的国土空间开发保护格局,在全球“碳中和”行动和中国新型城镇化转型背景下,具有其紧迫性和重要意义。为此,本文建立了城镇化背景下土地利用碳收支效应的系统性认知框架,提出城镇化通过土地利用变化影响陆地生态系统碳循环的“直接—间接—潜在”典型性路径。面向陆地生态系统减排增汇目标,从静态和动态两方面解释了国土空间布局低碳优化的内在逻辑,并从“数量结构—空间布局—空间用途”三个方面解构了国土空间布局低碳优化的治理维度,提出支撑国土空间布局低碳化调整的政策工具及其改进思路。通过强化国土空间开发利用低碳化思维、拓展国土空间低碳优化路径,从而进一步凸显国土空间布局优化与治理在区域“碳中和”目标实现中的积极作用。

The patterns of territorial spatial development determine the dynamic carbon balance in regional terrestrial ecosystems.In the context of global"carbon neutrality"and China's new urbanization transformation,it is urgent to establish development patterns that enhance terrestrial ecosystems'carbon sink capacity.To this end,the study establishes a systematic cognitive framework for the carbon balance effects of land use under urbanization.It proposes a"direct-indirect-potential"typology for the impact of urbanization-induced land use changes on terrestrial ecosystems'carbon cycling.To achieve the goal of carbon sequestration and increase in terrestrial ecosystems,the study explores the inherent logic of low-carbon optimization in territorial spatial layout.It also deconstructs the governance dimensions of low-carbon optimization in territorial spatial layout concerning"quantity,spatial layout,and spatial utilization".Finally,the study proposes policy instruments and improvement suggestions for supporting low-carbon adjustments in territorial spatial layout.In conclusion,the study's first contribution is the enhancement of low-carbon thinking in territorial spatial development and utilization.Secondly,it broadens the research path for low-carbon optimization in territorial space.The study highlights the positive role of territorial spatial layout optimization and governance in achieving regional"carbon neutrality"goals.