表2：数据集构建所用数据源的全面概述，涵盖光学、合成孔径雷达（SAR）、地理信息系统（GIS）及多光谱领域。这些数据源在空间分辨率与标注格式上互为补充，应用范围涵盖城市与交通监测、环境评估及灾害评估，为多传感器、基于工具的地理空间推理提供了丰富的基础支撑。

Table 2: Comprehensive overview of data sources used for dataset construction, covering optical, SAR, GIS, and multispectral domains. These sources collectively offer complementary spatial resolutions, and annotation formats, ranging from urban and transport monitoring to environmental and disaster assessment, forming a rich foundation for multi-sensor, tool-based geospatial reasoning.