The digital forest rangers
In the tropical forests of Yunnan, a growing population of Asian elephants (Elephas maximus indicus) requires new conservation strategies. The region's elephant population has rebounded from fewer than 150 individuals in the 1970s to approximately 360 today. This success has led to increased human-elephant encounters as the animals move through landscapes dotted with farms and villages. To manage this, authorities in the Xishuangbanna National Nature Reserve have implemented a high-tech monitoring and early-warning system.
The system uses a network of 600 infrared cameras, drones, and satellite tracking collars to gather real-time data on elephant movements. This information feeds into an AI platform that can identify an elephant in milliseconds with over 96% accuracy. Once an elephant is detected near a village, the system automatically sends warning messages to residents' phones and broadcasts alerts through 177 intelligent loudspeaker sets. The entire process, from an infrared camera capturing an image to a villager receiving a warning, takes about 15 seconds. Since its launch in August 2020, the system has sent over 10,000 warnings, and no human-elephant conflict casualties have been reported in the coverage area.
A wandering herd and elephant canteens
The effectiveness of this monitoring network was demonstrated to a global audience in 2020 and 2021. A herd of 15 elephants, later known as the "short-nosed family," left their reserve and trekked 500 kilometers north over 17 months, eventually nearing the provincial capital of Kunming. A massive effort involving 25,000 personnel, 1,500 vehicles, and hundreds of drones was mobilized to track the herd, ensure public safety, and gently guide the elephants home. The operation used 180 tons of food, including bananas and corn, to lure the elephants away from populated areas.
To reduce the reasons for elephants to roam into farmland, conservationists have established specially planted areas called "elephant canteens." These plots, some covering hundreds of acres, are cultivated with plants that elephants prefer, such as tiger grass, corn, and bananas. In one part of the reserve, authorities designated over 3,600 hectares for these food sources. These canteens provide a reliable food supply, aiming to keep the elephants within protected zones and away from commercial crops. The strategy is part of a effort to restore and connect fragmented habitats, creating ecological corridors for the expanding elephant population.