甘肃农牧交错带土地利用和碳储量的时空演变及预测
Spatial and Temporal Evolution and Prediction of Land Use and Carbon Storage in Agro-Pastoral Transitional Zone of Gansu
DOI: 10.12677/br.2025.143022, PDF,    科研立项经费支持
作者: 王 曼:甘肃农业大学理学院,甘肃 兰州;燕振刚*:甘肃农业大学信息科学技术学院,甘肃 兰州
关键词: 农牧交错带土地利用碳储量PLUS模型InVEST模型Agro-Pastoral Transitional Zone Land Use Carbon Storage PLUS Model InVEST Model
摘要: 探讨土地利用变化对碳储量时空演变的影响,对于维持区域碳平衡、助力双碳目标的实现具有重要意义。该研究基于PLUS和InVEST模型,解析1980~2020年该地区土地利用和碳储量的变化,模拟2030年四种情景下的时空演变特征。结果表明:1) 1980~2020年甘肃农牧交错带林地、草地、建设用地和未利用地呈现增长态势,耕地、水域的面积则呈现减少态势;2) 2030年,建设用地在自然发展、生态保护、经济发展和综合发展情景下分别扩张477.21 km2、42.99 km2、742.04 km2和300.57 km2,相比其他情景,生态保护情景下增速明显变缓;3) 1980~2020年碳储量呈下降趋势;相比2020年,自然发展情景下的碳储量减少3.896 × 106 t;相比自然发展情景,生态保护、经济发展和综合发展情景碳储量分别增加3.067 × 106 t、减少6.029 × 105 t、增加2.195 × 106 t。研究结果可为农牧交错带土地利用管理决策以及碳储量的提升提供数据支撑,为区域用地规划提供建议。
Abstract: Exploring the impact of land use change on the spatio-temporal evolution of carbon storage is of great significance for maintaining the regional carbon balance and contributing to the realization of the dual-carbon goal. Based on the PLUS and InVEST models, the study analyzed the changes in land use and carbon storage in the region from 1980 to 2020 and simulated their spatio-temporal evolution characteristics under four scenarios in 2030. The results showed that: 1) From 1980 to 2020, the forest land, grassland, construction land, and unused land in agro-pastoral transitional zone of Gansu showed an increasing trend, while the area of cultivated land and water area showed a decreasing trend. 2) By 2030, construction land will expand by 477.21 km2, 42.99 km2, 742.04 km2, and 300.57 km2 under natural development, ecological protection, economic development, and comprehensive development scenarios, respectively. Compared with other scenarios, the growth rate will significantly slow down under ecological protection scenario. 3) The carbon storage showed a downward trend from 1980 to 2020. Compared to 2020, the carbon storage in the natural development scenario has decreased by 3.896 × 106 t. Compared to the natural development scenario, the carbon storage in the ecological protection, economic development, and comprehensive development scenarios increased by 3.067 × 106 t, decreased by 6.029 × 105 t, and increased by 2.195 × 106 t. The research results can provide data support for land use management decisions and carbon storage improvement in agro-pastoral transitional zone, and provide suggestions for regional land use planning.
文章引用:王曼, 燕振刚. 甘肃农牧交错带土地利用和碳储量的时空演变及预测[J]. 植物学研究, 2025, 14(3): 188-199. https://doi.org/10.12677/br.2025.143022

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