Description of major land use and land cover (LULC) in the study area, including the number of regions of interest (ROI), number of representative pixel samples, and scaling factor.

Description of major land use and land cover (LULC) in the study area, including the number of regions of interest (ROI), number of representative pixel samples, and scaling factor.研究区主要土地利用与土地覆盖（Land Use and Land Cover, LULC）的描述，涵盖感兴趣区域（Region of Interest, ROI）数量、代表性像素样本数量及缩放因子。