The Degradation of Nagano's Mountain Ecosystem Due to Climate Change and Tourism Development - May 2000

The Degradation of Nagano's Mountain Ecosystem Due to Climate Change and Tourism Development - May 2000

Since the 1990s, the mountain ecosystem in Nagano Prefecture has undergone significant changes due to tourism development and the effects of climate change. Particularly, the Northern Alps and Yatsugatake have become popular tourist destinations, with over 300,000 climbers visiting each year. This has led to soil erosion caused by trampling on mountain trails, resulting in the decline of alpine plants such as Komakusa and Miyama Kinpouge, disrupting the balance of the ecosystem.

In the 2000s, the effects of climate change became more evident, with a 1.5-degree Celsius rise in temperature observed over the past 30 years. Snowmelt began approximately two weeks earlier than usual, further exacerbating soil erosion. Invasive species like Plantago major spread, threatening native species. Local environmental conservation groups and the Nagano Nature Conservation Center intensified their activities, focusing on eradicating invasive species and maintaining mountain trails. They also collaborated with the tourism industry to promote sustainable tourism and environmental protection.

In the 2010s, more than 1 billion yen annually was invested in conservation efforts, particularly in Kamikochi, where eco-tourism was promoted. Efforts were made to raise environmental awareness among tourists, and restrictions on trail usage and the designation of conservation areas were implemented to achieve a balance between tourism and environmental protection.

By the 2020s, the number of tourists had increased to around 400,000 annually, while the impacts of climate change had become even more severe. Earlier snowmelt continued to damage the mountain ecosystem. Drones were introduced for vegetation monitoring, and weather data analysis was used to predict the effects of climate change. Millions of yen were allocated annually for invasive species removal and environmental protection, with strengthened cooperation between the tourism industry and local environmental initiatives.