Abstract

Difficulty in applying passive reflectance measurement to early warning of plant status is that the measurement only offers external information along with visible symptoms. If internal information about health status of plants could be obtained in some measurements before the appearance of visible changes or damages, prompt action for protecting from diseases could be done quickly and as a result it would be possible to keep our unique earth green forever. We are planning the application of laser induced fluorescences (LIF) technique to lidar vegetation monitoring as an active sensor, because LIF spectra has great potential for providing early warning of plant disease. Here we discussed fundamental characteristics of LIF spectra of several intact plant leaves.

© 1995 IEEE