基于不同核算情景下的森林固碳计量研究进展

Research Progress on Forest Carbon Sequestration Measurement based on Different Accounting Scenarios

利用森林碳存储功能抵消碳排放成为实现双碳目标的主要途经。本文以国内外文献及标准为参考, 对GEP核算、温室气体清单编制及林业碳汇项目三个维度下森林固碳计量方法及适用性进行了讨论。研究结果表明: (1) 基于编制目的: 温室气体清单重点评估区域森林固碳强度, 服务于碳减排政策; GEP核算通过经济手段体现森林固碳活动的生产和服务能力; 林业碳汇项目则通过人为固碳措施形成抵消产品参与碳减排。 (2) 基于价值层面; 温室气体清单编制体现森林的自然碳吸收能力, 即生态价值; 而GEP核算及林业碳汇项目通过结合碳价评估固碳强度或参与市场交易, 体现经济价值。 (3) 基于固碳计量方法层面: GEP核算方法学中主要依据碳通量数据计算固碳量, 包括固碳速率法和植物生产功能参数法; 温室气体清单编制以碳储量变化法为主, 辅以碳通量法; 林业碳汇项目则通过比较项目与基线情景的碳储量变化计量固碳量, 碳储量计算方法及参数选取与温室气体清单编制具备相似性。通过对三种核算体系进行对比分析, 可为森林固碳计量 方法的选取提供参考, 更好地推动气候变化应对和生态保护工作。

The use of forest carbon storage function to offset carbon emissions has become the main way to achieve the dual carbon goal. Based on domestic and foreign literature and standards, this paper discusses the measurement methods and applicability of forest carbon sequestration in three dimensions: GEP accounting, greenhouse gas inventory compilation and forestry carbon sequestration projects. The results show that: (1) Based on the purpose of compilation: the greenhouse gas inventory focuses on assessing the carbon sequestration intensity of regional forests and serves the carbon emission reduction policy; GEP accounting reflects the production and service capacity of forest carbon sequestration activities through economic means; Forestry carbon sequestration projects form. offset products through artificial carbon sequestration measures to participate in carbon emission reduction. (2) based on the value level; Greenhouse gas inventories reflect the natural carbon absorption capacity of forests, i. e. , ecological values; The GEP accounting and forestry carbon sequestration projects reflect economic value by assessing carbon sequestration intensity or participating in market transactions in combination with carbon prices. (3) Based on the measurement method of carbon sequestration: the calculation of carbon sequestration in the GEP accounting methodology is mainly based on carbon flux data, including the carbon sequestration rate method and the plant production function parameter method. The compilation of greenhouse gas inventories is mainly based on the carbon stock change method, supplemented by the carbon flux method. In the forestry carbon sequestration project, the carbon sequestration is measured by comparing the carbon storage changes of the project with the baseline scenario, and the calculation method and parameter selection of carbon storage are similar to the compilation of greenhouse gas inventory. Through the comparative analysis of the three accounting systems, it can provide a reference for the selection of forest carbon sequestration measurement methods, and better promote climate change response and ecological protection.