The value of multi-functions
played by Japanese agriculture particularly in protecting
the national land and environment is estimated to
be approximately 8.2 trillion yen annually according
to the substitutive cost method.
<< Source: Fact book 2005 >>
Flood prevention
Fostering water resources
The water
storage capacity of paddy fields and upland fields
during the heavy rainfall season is evaluated in
the form of the function played by flood control
dams in the country.
The amount
of recycled irrigation water and groundwater recharged
through paddy fields and upland fields is evaluated
in the form of the function played by water supply
dams in the country.
Moderating summer heat
Preventing soil erosion
The temperature
lowering capacity of paddy fields in the summer
season is evaluated in the form of the air conditioner
costs.
The estimated
amount of soil erosion prevented by cultivation
of farm lands is evaluated in the form of the construction
costs of dams for soil erosion prevention in the
country.
Recycling the waste into fertilizers
Preventing landslides
The amount
of the waste including food leftovers recycled into
organic fertilizers is evaluated in the form of
the total cost of such waste treatment in the cities.
The average
amount of damage in the estimated number of landslides
prevented by cultivation of farm lands is converted
into the estimated value.
Recreational amenities
Values of
visits by urban people enjoying rural landscape
and recreational amenities are converted into the
estimated value.
