not-yet-known not-yet-known not-yet-known unknown 1 Combined Remote Sensing of Biodiversity and Functional Traits Tang et al. (2021) used a UAV with a standard RGB camera to map species number, diversity indices, and some physical/functional traits, such as AGB, organic carbon (OC) and total nitrogen content (TN), on the Tibetan Plateau. The methods worked well for predicting physical/functional traits, moderately well for species diversity indices and less well for species number and chemical traits. Zhao et al. (2021) used a UAV mounted hyperspectral camera to measure both biodiversity and functional traits on an experimental grassland monoculture site in inner Mongolia. They found that spectral diversity of grassland species increased from visible light to NIR and shortwave infrared, and that spectral diversity and functional trait diversity increased in a non-linear fashion with species diversity, eventually reaching a saturation point. The authors achieved an overall r2 of 0.73 between spectral and species diversity (Figure 3). 1 Combined Remote Sensing of Biodiversity and Functional Traits