Question
Is a high-resolution remote-sensing system based on a radio-controlled helicopter (the ‘Falcon-PARS system’) an effective tool to obtain images that can be used to identify herbaceous species?
Location
Watarase wetland, Japan.
Methods
We applied the remote-sensing system to a wetland composed mainly of Phragmites australis and Miscanthus sacchariflorus. The aerial observation was performed in a 100 x 200 m area at a flying height of 30 m. From the obtained images, we tried to identify P. australis and M. sacchariflorus through visual interpretation.
Results
We obtained images with a high spatial resolution (1 cm) and a positioning accuracy of finer than 1 m using this small and lightweight system, and confirmed that we could identify the above two species from the obtained images.
Conclusion
Such a high-resolution system can be used to directly identify herbaceous species, and as a non-destructive alternative to ground surveys. This lightweight system can be carried to sites such as a high-altitude bog that cannot be reached by a motor vehicle. Because of the low flying height (below cloud level), aerial observation is possible even on cloudy days, thereby permitting observations in all seasons.
Journal articles from the Grassland Society of Southern Africa (GSSA) African Journal of Range and Forage Science as well as related articles and reports from throughout the southern African region.