A simple interpretation of NDVI-Ts space combining LAI and evapotranspiration

The paper focuses on interpreting the different spatial relationships between NDVI and Ts, a triangular or a trapezoid, and analyzing transformation condition and the physical connotation and ecological meaning of the vegetation index-surface temperature feature space. Further, using the Temperature-Vegetation Dryness Index (TVDI), we explain the existent meaning of a triangular shape after NDVI arrives at saturated state (NDVI=1) by analyzing the relationship between NDVI, LAI and evapotranspiration. The specific relations between NDVI and Ts will help us validate and update land surface models well

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