Ancient cedar forests on Yakushima Island are facing new environmental challenges as growing tourism puts physical stress on the iconic Jōmon cedar [1].
The deterioration of the tree threatens one of Japan's most significant natural landmarks. Because the forest is a UNESCO World Natural Heritage site, the balance between public access and ecological preservation has become a critical concern for local authorities [2].
The Jōmon cedar, which stands 22 meters tall with a trunk circumference of 16 meters, was first identified in May 1966 [1]. Sixty years after that discovery, the tree is showing signs of instability. Environmental groups said the trunk is hollowing and branches are breaking due to wind and snow [1].
Visitor traffic remains high, with approximately 400 hikers gathering at the bus stop for the ascent each day [1]. The journey to reach the ancient tree is a demanding trek, covering a round-trip distance of 22 km [1]. This hike typically takes about 10 hours to complete [1].
Yakushima was designated as a World Natural Heritage site in 1993 [2]. While the designation brought global recognition and tourism, the sheer volume of foot traffic is now linked to the physical degradation of the forest floor, and the trees themselves [1].
Local authorities and environmental groups are now grappling with how to manage the flow of tourists to prevent further damage. The goal is to ensure that the 2,000-year-old cedar survives for future generations without being consumed by the industry of tourism [1].
“The Jōmon cedar is showing signs of instability, including the hollowing of the trunk.”
The situation in Yakushima highlights the 'paradox of tourism' for UNESCO sites, where the act of valuing a natural wonder through visitation directly contributes to its physical decline. The hollowing of the Jōmon cedar's trunk suggests that the current carrying capacity of the trail may have been exceeded, potentially necessitating stricter quotas or revised access routes to ensure the tree's structural integrity.
