基于TVDI的内蒙古草地干旱变化特征分析

程伟,辛晓平

Analysis of Spatial-Temporal Characteristics of Drought Variation in Grassland Area of Inner Mongolia Based on TVDI

CHENG Wei,XIN XiaoPing

表2 TVDI干旱等级划分标准

Table 2 Criteria for classification of drought with TVDI

干旱等级Drought grades TVDI值TVDI value 重度湿润Severe wetness 0<TVDI≤0.2 轻度湿润Mild wetness 0.2<TVDI≤0.4 正常Normal state 0.4<TVDI≤0.6 轻度干旱Mild drought 0.6<TVDI≤0.8 重度干旱Severe drought 0.8<TVDI≤1.0