【気候変動番組】100年天気予報〜北海道も竹林に？竹の生育地拡大がもたらす生活の変化〜

The theme of the 44th episode: "Will Hokkaido Become a Bamboo Forest Too? Lifestyle Changes Brought About by the Expansion of Bamboo Habitats" It's the season for delicious bamboo shoots! However, are you aware that behind the scenes, Japan's mountains are being quietly and dramatically encroached upon by bamboo? Bamboo, once highly valued as a material for daily life, has seen its production plummet to about a quarter of its peak due to declining demand. Neglected bamboo forests, no longer properly maintained, are transforming into a threat to our safety and ecosystems. Will we be able to leave behind rich rural landscapes for Japan 100 years from now? We will explore the astonishing future revealed by the latest scientific data and the hopeful business opportunities that transform bamboo into a "resource." Cast Weather News Caster: Mayu Uozumi Weather News Meteorologist: Mayuko Kira Content Will All of Japan Become a Bamboo Thicket? Currently, only 35% of the land area is suitable for bamboo growth, but it is predicted that this will expand to 77-83% if global warming causes a 4°C rise in temperature. The pitfalls of "good drainage": The infiltration rate of Moso bamboo forests is an average of 92.8 mm/h, about 1.4 times that of broadleaf forests. A thorough explanation of the risk of landslides caused by rapid water absorption during heavy rains. Roots only 50 cm deep: Unlike trees, bamboo rhizomes are remarkably shallow, only 30-50 cm deep. How does this affect landslides? The problem of wild boar hiding places: The expansion of neglected bamboo forests is increasing the habitat of wild animals, and damage to other crops is becoming more serious. A revolutionary idea to transform bamboo into a "treasure": Introducing adaptive businesses that protect the future, such as 100% plant-based bamboo fertilizer and beautiful bamboo furniture. 00:00 Opening 02:38 The True Nature of Bamboo 08:30 The Threat of Neglected Bamboo Forests 13:40 Does Good Drainage Cause Collapse? 19:10 Will Bamboo Cover Hokkaido? 23:25 Adaptation Business 27:33 Ending Sources and reference materials for the content introduced in this video: Ministry of Agriculture, Forestry and Fisheries, aff 03 March (2021) (https://www.maff.go.jp/j/pr/aff/2103/...) Forestry Agency, Towards the Promotion of Bamboo Utilization (2018) (https://www.rinya.maff.go.jp/j/tokuyo...) Forestry Agency, Forestry and Forest Products White Paper for FY2024 (Published June 3, 2025) Part 1 Chapter 2 Section 2 Trends in Special Forest Products (2) (2025) (https://www.rinya.maff.go.jp/j/kikaku...) Chiba Prefectural Agricultural and Forestry Research Center, Bamboo forest countermeasures are necessary to reduce damage from wild boars (2024) (https://www.pref.chiba.lg.jp/lab-nour...) Hydrological Research Letters, Ide et al., A preliminary investigation of surface runoff and soil properties in a moso-bamboo (Phyllostachys pubescens) forest in western Japan (2010) (https://doi.org/10.3178/hrl.4.80) Tohoku University Press Release, Nagano Prefectural Institute for Environmental Conservation, Tohoku University, Forestry and Forest Products Research Institute, Meteorological Research Institute of the Japan Meteorological Agency, University of Tsukuba, University of Tokyo, National Institute for Environmental Studies and Research Institute for Humanity and Nature, Bamboo may expand its distribution in northern Japan – The suitable environment for the growth of Moso bamboo and Madake bamboo (industrially managed invasive species), which are a threat to satoyama management, is expanding due to global warming, and they may move up to 500 km north and reach Wakkanai – (2017) (https://www.tohoku.ac.jp/japanese/new...) • Reference: Yamaguchi Prefectural Government, Department of Agriculture, Forestry and Fisheries, Forestry Planning Division, Yamaguchi Bamboo Forest Management Basic Policy for the Circular Use of Bamboo Materials (2025) (https://www.pref.yamaguchi.lg.jp/uplo...)