Progress in remote sensing of vegetation chlorophyll fluorescence

Chlorophyll fluorescence (CF) has become a powerful tool in plant photosynthesis research and stress detection. These types of methods have been mostly relegated to the laboratory. Recently much attention has been paid to chlorophyll fluorescence sensing for the remote estimation of plant physiological status. Remotely sensed chlorophyll fluorescence emission has a potential to become one of the major global-scale reporter signals on vegetation performance and stress. In this paper, firstly, laser induced fluorescence sensing was presented, including a brief introduction, plant fluorescence spectral characters and some applications for stress detection. An overview was then given to the developments of solar induced fluorescence sens- ing, including methodology for the retrieval of vegetation CF from apparent reflectance (vegetation indices and FLD) and appli- cations for monitoring plant health. Finally, the future development trends and the prospect of active and passive remote sensing of chlorophyll fluorescence were discussed.