基于kNDVI-Albedo-SWCI三维特征空间与XGBoost-SHAP的科尔沁沙地沙漠化时空格局与驱动因素分析

曹婉颖, 段翰晨, 贾晓鹏

Spatiotemporal patterns and driving factors of aeolian desertification in the Horqin Sandy Land based on kNDVI-Albedo-SWCI three-dimensional feature space and XGBoost-SHAP analysis

Wanying Cao, Hanchen Duan, Xiaopeng Jia

表3 2000—2025年科尔沁沙地三维沙漠化综合指数（TDDI）分级

Table 3 TDDI classification of the Horqin Sandy Land from 2000 to 2025

年份 沙漠化程度 极重度沙漠化 重度沙漠化 中度沙漠化 轻度沙漠化 非沙漠化 2000 ≤0.84 0.84~0.90 0.90~0.95 0.95~0.96 ≥0.96 2005 ≤0.78 0.78~0.87 0.87~0.92 0.92~0.93 ≥0.93 2010 ≤0.64 0.64~0.71 0.71~0.78 0.78~0.80 ≥0.80 2015 ≤0.75 0.75~0.83 0.83~0.89 0.89~0.94 ≥0.94 2020 ≤1.15 1.15~1.20 1.20~1.23 1.23~1.25 ≥1.25 2025 ≤0.79 0.79~0.80 0.80~0.82 0.82~0.83 ≥0.83