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Forest@Management@for@Headwaters

  • In projects for headwaters, we have been urgently working on the management of forests as a public safety net, targeting tree-less or -dispersed land among private and protected forests in hinterland water conservation areas that are key to water conservation.
  • To manage forests, we are promoting:
    • Introduction of long-term rotation management making the best use of local vegetation including broad leaf trees.
    • Introduction of multi-storied forest management leading to multiple crown layers
    • Minimization and dispersion of cutting areas at regeneration cutting
  • The total area of forests planted in projects for the forest management for headwaters is about 470,000 ha (as of the end of FY 2015), with the effective economic benefits of its public-interest function estimated at about 920 billion yen per year.
Profit-sharing contracts
Enhancement of various forest functions
Effects on enhancement of water conservation Effects on environmental conservation Effects on
land conservation
Supplying of good-quality and abundant water
Prevention of flood and Purification of water quality
Absorption of carbon dioxide
Contribution of oxygen release and air purifying
Prevention of an outflow and collapse of earth and sand
Forest management for disaster resilience

Reserve about 3.1 billion
m3 / year of water (equivalent to the amount of water consumed in Tokyo over two years).


Fixing 2.62 million tons of carbon dioxide (equivalent to the amount of CO2 discharged at power generation for electricity consumed by about 1.25 million households per year).


Retaining approx. 94 million
m3 / year of soil

Estimated value of various forest functions
(except wood production) in project areas
Approx. 920 billion yen / year