【摘要】 研究呼伦贝尔市土地利用变化对碳储量时空变化的影响，可为该区域“双碳”背景下土地的合理利用与规划提供科学依据。基于呼伦贝尔2000-2020年土地利用数据，运用PLUSInVEST模型探讨呼伦贝尔2000-2020年以及2030年3种情景(自然变化、生态保护、耕地保护)碳储量的变化。结果表明：2000-2020年呼伦贝尔市只有草地面积呈减少趋势，耕地、林地、水域、建设用地和未利用土地面积均呈增加趋势，20 a碳储量减少1.0×10~5t，林地和草地是主要的碳储存地；2030年自然变化、生态保护的碳储量分别比2020年增加3.0×10~5t、2.0×10~6t，耕地保护的碳储量比2020年减少6.0×10~5t。生态保护更有助于提高呼伦贝尔市的碳储量，为该区域土地利用规划管理和增汇政策的制定提供参考。更多还原

【Abstract】 Studying the impact of land use changes on the spatio-temporal variations of carbon storage in Hulunbeier City can provide a scientific basis for the rational utilization and planning of land in this region under the "dual carbon" background. Based on the land use data of Hulunbeier from 2000 to 2020, the PLUS-InVEST model was employed to investigate the changes in carbon storage under three scenarios(natural change, ecological protection, and farmland protection) from 2000 to 2020 and in 2030. The results indicate that from 2000 to 2020, only the grassland area in Hulunbeier City showed a decreasing trend, while the areas of farmland, forest, water bodies, construction land, and unused land all exhibited an increasing trend. The carbon storage decreased by 1.0×10~5 t over 20 years, with forests and grasslands serving as the primary carbon storage sites. In 2030, the carbon storage under the natural change scenario and the ecological protection scenario will increase by 3.0×10~5 t and 2.0×10~6 t respectively compared to 2020, while the farmland protection scenario will result in a decrease of 6.0×10~5 t in carbon storage compared to 2020. The ecological protection scenario is more conducive to enhancing the carbon storage in Hulunbeier City, providing decision-making reference for land use planning management and the formulation of carbon sequestration policies in this region.更多还原