Drones for environmental protection: Successful monitoring of fruit tree orchard stocks

This joint project between the Audi Environmental Foundation and the Geography Department at Heidelberg University of Education, the Karlsruhe District Authority, and the Bad Schönborn Working Group on Habitat, Nature, and the Environment (AHNU) has scored additional core successes with the completion of the test area flights and the high hit rates. The use of modern geotechnology is intended to indicate the type, vitality, and condition of the local fruit trees and therefore contribute to maintaining that stock and simplify its maintenance significantly. In the long term, this also helps to secure the habitat of native animals and insects. In the next step, the quality of the data is evaluated in detail. Through machine learning, the software and therefore the precision of the results will get even better.

To that end, the geographers have used the aerial photos to develop a model for automatically recognizing the vitality and condition of the trees in the meadow. Additionally, infrared photos from a multispectral camera, from which surface models of the landscape are derived, help determine the condition of individual fruit trees and differentiate between them. Together with the overlapping photos from the drone camera, the recordings make the condition of the meadow orchard visible in the form of a 3-D model.

Additionally, our partners have developed educational concepts for different primary school grade levels to convey the high value of a meadow orchard. The objective is to make schools, spa guests, and the local population aware of this type of cultivated landscape and call their attention to protecting the habitat for local species diversity. Rüdiger Recknagel, Director of the Audi Environmental Foundation, supports this: “Our foundation works to connect the use of modern technology with ideas about environmental protection. This project combines scientific expertise with educational work, environmental education, and individual engagement and thereby creates sustainable awareness of habitat preservation and species diversity.”

Prof. Alexander Siegmund, who heads the project team at the Heidelberg University of Education, adds, “For us, the meadow orchard is a model project that can ideally connect the potential behind the use of modern drone and geo-technology with preservation and conveyance of this unique cultivated landscape. As a UNESCO professorial chair for Earth observation and geocommunication, we have a great deal of experience in environmental research and sustainability communication, which we can bring to bear here in the best possible way.”

As the basis for long-term meadow orchard monitoring, students from the Baden-Wuerttemberg Cooperative State University are developing an initial test version of the online mapping service in the form of a web GIS, which is intended to make the results of the drone flights accessibly and interactively usable for anyone who is interested. In the future, it should be possible to use this database to, among other things, provide tree sponsorships by making contact and communication between owners and sponsors simpler.