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In the 1990s, soil erosion caused by deforestation became a serious problem in Japan's mountainous regions, leading to deteriorating water quality, adverse effects on agriculture and fisheries, and an increased risk of disasters caused by landslides. In the 2000s, amendments to the Forest Act and the promotion of afforestation efforts led to progress in curbing illegal logging and achieving the goal of absorbing 100 million tons of carbon dioxide annually. In Gifu Prefecture, approximately 5 million saplings were planted between 2005 and 2010. In the 2010s, the increased frequency of torrential rains caused by climate change exacerbated the damage; during the 2018 Western Japan Floods, approximately 5 million cubic meters of sediment were washed away in Hiroshima Prefecture. In the 2020s, companies and local residents are collaborating on measures such as the "Green Disaster Prevention Project" in Kumamoto Prefecture, which utilizes afforestation and technological innov
ation. These initiatives are recognized as important efforts aimed at balancing environmental conservation with economic development.