呼包鄂榆城市群土地利用时空演变特征分析

Spatiotemporal Evolution Characteristics of Land Use in the Hohhot-Baotou-Ordos-Yulin Urban Agglomeration

摘要: 土地利用变化是调控区域内资源配置与生态环境保护的重要依据，对促进区域可持续发展具有重要意义。为揭示呼包鄂榆城市群土地利用时空演变特征，基于2000~2025年土地利用数据，采用土地利用动态度、土地利用程度综合指数、土地利用转移矩阵及GIS空间分析等方法，系统分析区域土地利用时空演变特征。研究结果表明：1) 研究区内土地利用结构总体保持稳定，草地始终占据主导地位，建设用地扩张持续演进；2) 土地利用变化具有明显的阶段性特征，最活跃的土地类型始终是建设用地；3) 土地利用综合指数呈现缓慢上升的趋势；4) 土地利用转移以各地类自保持为主，草地是土地利用转换的核心类型。研究结果可为呼包鄂榆城市群土地资源配置优化、国土空间规划及区域可持续发展提供科学依据。

Abstract: Land use change provides an important basis for regulating regional resource allocation and ecological environmental protection, and plays a crucial role in promoting regional sustainable development. To reveal the spatiotemporal evolution characteristics of land use in the Hohhot-Baotou-Ordos-Yulin Urban Agglomeration, this study employed land use data from 2000 to 2025 and systematically analyzed the spatiotemporal characteristics of land use by applying the land use dynamic degree, comprehensive land use degree index, land use transfer matrix, and GIS-based spatial analysis methods. The results indicate that: 1) the overall land use structure remained relatively stable throughout the study period, with grassland consistently occupying the dominant position, while construction land exhibited continuous expansion; 2) land use change showed significant stage-specific characteristics, and construction land remained the most active land use type during the entire study period; 3) the comprehensive land use degree index exhibited a gradual upward trend, indicating a continuous enhancement in the intensity of land development and utilization; and 4) land use transitions were dominated by self-retention among land use types, with grassland serving as the core land type in land use conversions. The findings provide a scientific basis for optimizing land resource allocation, improving territorial spatial planning, and promoting sustainable regional development in the Hohhot-Baotou-Ordos-Yulin Urban Agglomeration.