Environmental improvement operations with Furusato no Mori (local ...

<strong>Environmental</strong> <strong>improvement</strong> <strong>operations</strong> <strong>with</strong> <strong>Furusato</strong> <strong>no</strong> <strong>Mori</strong> (<strong>local</strong> forests) 25 Type of function Carbon dioxide absorption Prevention of surface erosion Prevention of surface layer breakdown Moderation of flooding Water resource reservoir Water purification Fossil fuel alternative Health rejuvenation Total Forest area Monetary value per 100 ha Table 3 Diverse functions and monetary value of forests 2) Monetary value of forests nationwide 1.2391 billion yen 28.2565 billion yen 8.4421 billion yen 6.4686 billion yen 8.7407 billion yen 14.6361 billion yen 226.1 million yen 2.2546 billion yen 70.2638 billion yen 2.5146 million ha 279 million yen Method of determining value The value provided by forest carbon dioxide recovery is determined by the recovery cost of the same amount of carbon dioxide in a thermal power generation plant. The value provided by forest erosion control is determined by the cost of building dams to control erosion. The value of reduced surface area breakdown is determined by the cost of hillside construction. The value of the effectiveness of forests in reducing the amount of flooding is determined by taking the adjusted volume of probable rainfall for 100 years and adding the depreciation cost of flood control dams and annual maintenance costs. The value of the amount of basin reservoir provided by forest soil is determined by adding the depreciation cost of irrigation dams and annual maintenance costs. The value of water purification is determined by adding the depreciation cost of rainwater utilization facilities and annual maintenance costs. The value of the carbon fuel alternative effect provided by wood house building is determined by the cost of recovering that amount of carbon dioxide in a thermal power generation plant. The value of forest health rejuvenation is determined by the cost of travel to appreciate forest scenery. ESPEC Tech<strong>no</strong>logy Report No.17