Abstract
We have developed a vegetation monitoring lidar called a laser-induced fluorescence spectrum (LIFS) lidar which is able to get the living status of plants by observing their fluorescence remotely. The features of its operation are; daytime observations possible even outdoors, mobility and self-sufficiency, capability of mapping plant living information, and a user-friendly operation by unifying the controls of different equipment of the lidar using software. These features make observations by our LIFS lidar possible at any time and any place. In forest observations, we could depict three-dimensional structures of fluorescence spectrums. We also discuss in this work the possibility of monitoring other plant physiological information such as the concentration of chlorophyll and photosynthesis secondary metabolites in this work.
Highlights
Photosynthesis, the most well-known activity of plants, supplies food and oxygen that is indispensable to our survival
We discuss the potential of the laser-induced fluorescence spectrum (LIFS) lidar, which we developed for such purposes, based on the results of field investigations
A fluorescence lidar that combines fluorescence spectroscopy and lidar remote sensing techniques can be a powerful apparatus in tree/forest surveys. We named this type of fluorescence lidar as a laser-induced fluorescence spectrum (LIFS) lidar and we can use it to investigate the living status of plants by monitoring the changes of their fluorescence spectrum shapes remotely
Summary
Photosynthesis, the most well-known activity of plants, supplies food and oxygen that is indispensable to our survival. Gaseous biogenic volatile organic compounds (BVOCs) like aromatic compounds generate new compounds or exclude some through chemical reaction with various kinds of molecules in the Earth.[1] Physical reactions in a forest such as the evaporation of a water droplet splashing on a leaf surface[2] or a water micro-burst on the ground surface[3] could be a great source of forest aerosol These activities occur continuously, so information about the living status of a plant itself or vegetation such as forests or mountainsides is considerably important in maintaining the continuity of the earth’s environment, and human beings’ society. We discuss the potential of the LIFS lidar, which we developed for such purposes, based on the results of field investigations
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